[Kernel-packages] [Bug 1496317] Re: kexec fails with OOM killer with the current crashkernel=128 value
** Changed in: kexec-tools (Ubuntu Wily) Status: In Progress => Fix Released ** Changed in: kexec-tools (Ubuntu Wily) Assignee: Louis Bouchard (louis-bouchard) => (unassigned) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to kexec-tools in Ubuntu. https://bugs.launchpad.net/bugs/1496317 Title: kexec fails with OOM killer with the current crashkernel=128 value Status in kexec-tools package in Ubuntu: Fix Released Status in makedumpfile package in Ubuntu: Fix Released Status in kexec-tools source package in Wily: Fix Released Status in makedumpfile source package in Wily: Fix Released Bug description: [SRU justification] This modification is required to fix memory shortage in the kexec booted kernel that blocks the creation of kernel crash dumps [Impact] Without this fix, the kernel crash dump mechanism is unusable without applying a workaround [Fix] Implement use of smaller initrd.img files located in /var/lib/kdump and used with the definition of KDUMP_KERNEL / KDUMP_INITRD in the config file. [Test Case] - Create a system running the standard Wily release - install the linux-crashdump metapackage - Enable the kdump mechanism by setting USE_KDUMP=1 in /etc/default/kdump-tools - Reboot to activate the crashkernel= kernel variable - execute the following as root to trigger a kernel crash : echo c > /proc/sysrq-trigger Without the fix, the kernel crash dump procedure will not complete (see Original description) and will be stopped by the OOM killer. With the fix, the kernel crash dump procedure will complete normally. [Regression] This is a new implementation, taken from upstream's 1.5.9 version. In the eventuality that the package is installed without using the new variable definitions in /etc/default/kdump-tools, the old method will be used and will lead to the original failure. [Original description of the problem] With a very basic Wily image, just trigger a crash with sysrq-trigger after installing and setting up linux-crashdump and the kexec will fail with the following : [0.334592] Trying to unpack rootfs image as initramfs... [0.649440] swapper/0 invoked oom-killer: gfp_mask=0x200d2, order=0, oom_score_adj=0 [0.650332] swapper/0 cpuset=/ mems_allowed=0 [0.650856] CPU: 0 PID: 1 Comm: swapper/0 Tainted: GW 4.2.0-7-generic #7-Ubuntu [0.651788] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [0.652691] 88002fd906c8 88002fcf76a8 817b0465 000f [0.653556] 88002fd9 88002fcf7738 817ae2b5 88002ffc0e28 [0.654418] 880033c164c0 880033c16530 88002fd90068 88002fcf7748 ... [0.682339] Mem-Info: [756/1897] [0.682599] active_anon:0 inactive_anon:0 isolated_anon:0 [0.682599] active_file:2023 inactive_file:0 isolated_file:0 [0.682599] unevictable:14845 dirty:0 writeback:0 unstable:0 [0.682599] slab_reclaimable:1722 slab_unreclaimable:632 [0.682599] mapped:0 shmem:0 pagetables:0 bounce:0 [0.682599] free:0 free_pcp:2 free_cma:0 [0.685982] Node 0 DMA free:0kB min:0kB low:0kB high:0kB active_anon:0kB inactive_anon:0kB active_file:0kB inact ive_file:0kB unevictable:540kB isolated(anon):0kB isolated(file):0kB present:632kB managed:548kB mlocked:0kB dirty: 0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:8kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:540 all_unreclaimab le? yes [0.690450] lowmem_reserve[]: 0 0 0 0 [0.690928] Node 0 DMA32 free:0kB min:0kB low:0kB high:0kB active_anon:0kB inactive_anon:0kB active_file:8092kB inactive_file:0kB unevictable:58840kB isolated(anon):0kB isolated(file):0kB present:130420kB managed:78064kB mlocke d:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:6880kB slab_unreclaimable:2528kB kernel_stack:4 64kB pagetables:0kB unstable:0kB bounce:0kB free_pcp:8kB local_pcp:8kB free_cma:0kB writeback_tmp:0kB pages_scanned :58840 all_unreclaimable? yes [0.695547] lowmem_reserve[]: 0 0 0 0 [0.696049] Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0k B [0.697335] Node 0 DMA32: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB [0.698641] 16868 total pagecache pages [0.699075] 0 pages in swap cache [0.699448] Swap cache stats: add 0, delete 0, find 0/0 [0.700029] Free swap = 0kB [0.700356] Total swap = 0kB [0.700679] 32763 pages RAM [0.700991] 0 pages HighMem/MovableOnly [0.701418] 13110 pages reserved [0.701778] 0 pages cma reserved
[Kernel-packages] [Bug 1496317] Re: kexec fails with OOM killer with the current crashkernel=128 value
This bug was fixed in the package makedumpfile - 1:1.5.8-4ubuntu1 --- makedumpfile (1:1.5.8-4ubuntu1) wily; urgency=medium * kdump-tools now make use of smaller initrd.img files created in /var/lib/kdump. This avoid optential OOM when the size of the initrd.img becomes larger (LP: #1496317). Implementation details are : - New kernel hooks are added to create smaller initrd.img files when new kernel packages are installed : /etc/kernel/postrm.d/kdump-tools /etc/kernel/postinst.d/kdump-tools - kdump-config is responsible for the maintenance of symbolic links used to point to the appropriate vmlinuz & initrd files. Link maintenance is done at each boot by kdump-config. New links will point to the files named after the running kernel. - The KDUMP_KERNEL and KDUMP_INITRD configuration variables are now now enabled and use the symbolic links : /var/lib/kdump/vmlinuz /var/lib/kdump/initrd.img o kdump-config has been adapted to show the symbolic link information -- Louis Bouchard Thu, 26 Nov 2015 15:38:15 +0100 ** Changed in: makedumpfile (Ubuntu Wily) Status: Fix Committed => Fix Released -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to kexec-tools in Ubuntu. https://bugs.launchpad.net/bugs/1496317 Title: kexec fails with OOM killer with the current crashkernel=128 value Status in kexec-tools package in Ubuntu: Fix Released Status in makedumpfile package in Ubuntu: Fix Released Status in kexec-tools source package in Wily: In Progress Status in makedumpfile source package in Wily: Fix Released Bug description: [SRU justification] This modification is required to fix memory shortage in the kexec booted kernel that blocks the creation of kernel crash dumps [Impact] Without this fix, the kernel crash dump mechanism is unusable without applying a workaround [Fix] Implement use of smaller initrd.img files located in /var/lib/kdump and used with the definition of KDUMP_KERNEL / KDUMP_INITRD in the config file. [Test Case] - Create a system running the standard Wily release - install the linux-crashdump metapackage - Enable the kdump mechanism by setting USE_KDUMP=1 in /etc/default/kdump-tools - Reboot to activate the crashkernel= kernel variable - execute the following as root to trigger a kernel crash : echo c > /proc/sysrq-trigger Without the fix, the kernel crash dump procedure will not complete (see Original description) and will be stopped by the OOM killer. With the fix, the kernel crash dump procedure will complete normally. [Regression] This is a new implementation, taken from upstream's 1.5.9 version. In the eventuality that the package is installed without using the new variable definitions in /etc/default/kdump-tools, the old method will be used and will lead to the original failure. [Original description of the problem] With a very basic Wily image, just trigger a crash with sysrq-trigger after installing and setting up linux-crashdump and the kexec will fail with the following : [0.334592] Trying to unpack rootfs image as initramfs... [0.649440] swapper/0 invoked oom-killer: gfp_mask=0x200d2, order=0, oom_score_adj=0 [0.650332] swapper/0 cpuset=/ mems_allowed=0 [0.650856] CPU: 0 PID: 1 Comm: swapper/0 Tainted: GW 4.2.0-7-generic #7-Ubuntu [0.651788] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [0.652691] 88002fd906c8 88002fcf76a8 817b0465 000f [0.653556] 88002fd9 88002fcf7738 817ae2b5 88002ffc0e28 [0.654418] 880033c164c0 880033c16530 88002fd90068 88002fcf7748 ... [0.682339] Mem-Info: [756/1897] [0.682599] active_anon:0 inactive_anon:0 isolated_anon:0 [0.682599] active_file:2023 inactive_file:0 isolated_file:0 [0.682599] unevictable:14845 dirty:0 writeback:0 unstable:0 [0.682599] slab_reclaimable:1722 slab_unreclaimable:632 [0.682599] mapped:0 shmem:0 pagetables:0 bounce:0 [0.682599] free:0 free_pcp:2 free_cma:0 [0.685982] Node 0 DMA free:0kB min:0kB low:0kB high:0kB active_anon:0kB inactive_anon:0kB active_file:0kB inact ive_file:0kB unevictable:540kB isolated(anon):0kB isolated(file):0kB present:632kB managed:548kB mlocked:0kB dirty: 0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:8kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:540 all_unreclaimab le? yes [0.690450] lowmem_reserve[]: 0 0 0 0 [0.690928] Node 0 DMA32 free:0kB min:0kB low:0kB high:0kB active_anon:0kB inactive_anon:0kB active_file
[Kernel-packages] [Bug 1496317] Re: kexec fails with OOM killer with the current crashkernel=128 value
** Tags removed: verification-needed ** Tags added: verification-done -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to kexec-tools in Ubuntu. https://bugs.launchpad.net/bugs/1496317 Title: kexec fails with OOM killer with the current crashkernel=128 value Status in kexec-tools package in Ubuntu: Fix Released Status in makedumpfile package in Ubuntu: Fix Released Status in kexec-tools source package in Wily: In Progress Status in makedumpfile source package in Wily: Fix Committed Bug description: [SRU justification] This modification is required to fix memory shortage in the kexec booted kernel that blocks the creation of kernel crash dumps [Impact] Without this fix, the kernel crash dump mechanism is unusable without applying a workaround [Fix] Implement use of smaller initrd.img files located in /var/lib/kdump and used with the definition of KDUMP_KERNEL / KDUMP_INITRD in the config file. [Test Case] - Create a system running the standard Wily release - install the linux-crashdump metapackage - Enable the kdump mechanism by setting USE_KDUMP=1 in /etc/default/kdump-tools - Reboot to activate the crashkernel= kernel variable - execute the following as root to trigger a kernel crash : echo c > /proc/sysrq-trigger Without the fix, the kernel crash dump procedure will not complete (see Original description) and will be stopped by the OOM killer. With the fix, the kernel crash dump procedure will complete normally. [Regression] This is a new implementation, taken from upstream's 1.5.9 version. In the eventuality that the package is installed without using the new variable definitions in /etc/default/kdump-tools, the old method will be used and will lead to the original failure. [Original description of the problem] With a very basic Wily image, just trigger a crash with sysrq-trigger after installing and setting up linux-crashdump and the kexec will fail with the following : [0.334592] Trying to unpack rootfs image as initramfs... [0.649440] swapper/0 invoked oom-killer: gfp_mask=0x200d2, order=0, oom_score_adj=0 [0.650332] swapper/0 cpuset=/ mems_allowed=0 [0.650856] CPU: 0 PID: 1 Comm: swapper/0 Tainted: GW 4.2.0-7-generic #7-Ubuntu [0.651788] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [0.652691] 88002fd906c8 88002fcf76a8 817b0465 000f [0.653556] 88002fd9 88002fcf7738 817ae2b5 88002ffc0e28 [0.654418] 880033c164c0 880033c16530 88002fd90068 88002fcf7748 ... [0.682339] Mem-Info: [756/1897] [0.682599] active_anon:0 inactive_anon:0 isolated_anon:0 [0.682599] active_file:2023 inactive_file:0 isolated_file:0 [0.682599] unevictable:14845 dirty:0 writeback:0 unstable:0 [0.682599] slab_reclaimable:1722 slab_unreclaimable:632 [0.682599] mapped:0 shmem:0 pagetables:0 bounce:0 [0.682599] free:0 free_pcp:2 free_cma:0 [0.685982] Node 0 DMA free:0kB min:0kB low:0kB high:0kB active_anon:0kB inactive_anon:0kB active_file:0kB inact ive_file:0kB unevictable:540kB isolated(anon):0kB isolated(file):0kB present:632kB managed:548kB mlocked:0kB dirty: 0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:8kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:540 all_unreclaimab le? yes [0.690450] lowmem_reserve[]: 0 0 0 0 [0.690928] Node 0 DMA32 free:0kB min:0kB low:0kB high:0kB active_anon:0kB inactive_anon:0kB active_file:8092kB inactive_file:0kB unevictable:58840kB isolated(anon):0kB isolated(file):0kB present:130420kB managed:78064kB mlocke d:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:6880kB slab_unreclaimable:2528kB kernel_stack:4 64kB pagetables:0kB unstable:0kB bounce:0kB free_pcp:8kB local_pcp:8kB free_cma:0kB writeback_tmp:0kB pages_scanned :58840 all_unreclaimable? yes [0.695547] lowmem_reserve[]: 0 0 0 0 [0.696049] Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0k B [0.697335] Node 0 DMA32: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB [0.698641] 16868 total pagecache pages [0.699075] 0 pages in swap cache [0.699448] Swap cache stats: add 0, delete 0, find 0/0 [0.700029] Free swap = 0kB [0.700356] Total swap = 0kB [0.700679] 32763 pages RAM [0.700991] 0 pages HighMem/MovableOnly [0.701418] 13110 pages reserved [0.701778] 0 pages cma reserved [0.702139] 0 pages hwpoisoned [0.702481] [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oo
[Kernel-packages] [Bug 1496317] Re: kexec fails with OOM killer with the current crashkernel=128 value
Accepted https://launchpad.net/ubuntu/+source/makedumpfile/1:1.5.8-4ubuntu1 into wily-proposed. Please verify and make verification-done if this upload fixes this issue. Thanks ** Also affects: makedumpfile (Ubuntu) Importance: Undecided Status: New ** Changed in: makedumpfile (Ubuntu) Status: New => Fix Released ** Tags added: verification-needed ** Changed in: makedumpfile (Ubuntu Wily) Status: New => Fix Committed -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to kexec-tools in Ubuntu. https://bugs.launchpad.net/bugs/1496317 Title: kexec fails with OOM killer with the current crashkernel=128 value Status in kexec-tools package in Ubuntu: Fix Released Status in makedumpfile package in Ubuntu: Fix Released Status in kexec-tools source package in Wily: In Progress Status in makedumpfile source package in Wily: Fix Committed Bug description: [SRU justification] This modification is required to fix memory shortage in the kexec booted kernel that blocks the creation of kernel crash dumps [Impact] Without this fix, the kernel crash dump mechanism is unusable without applying a workaround [Fix] Implement use of smaller initrd.img files located in /var/lib/kdump and used with the definition of KDUMP_KERNEL / KDUMP_INITRD in the config file. [Test Case] - Create a system running the standard Wily release - install the linux-crashdump metapackage - Enable the kdump mechanism by setting USE_KDUMP=1 in /etc/default/kdump-tools - Reboot to activate the crashkernel= kernel variable - execute the following as root to trigger a kernel crash : echo c > /proc/sysrq-trigger Without the fix, the kernel crash dump procedure will not complete (see Original description) and will be stopped by the OOM killer. With the fix, the kernel crash dump procedure will complete normally. [Regression] This is a new implementation, taken from upstream's 1.5.9 version. In the eventuality that the package is installed without using the new variable definitions in /etc/default/kdump-tools, the old method will be used and will lead to the original failure. [Original description of the problem] With a very basic Wily image, just trigger a crash with sysrq-trigger after installing and setting up linux-crashdump and the kexec will fail with the following : [0.334592] Trying to unpack rootfs image as initramfs... [0.649440] swapper/0 invoked oom-killer: gfp_mask=0x200d2, order=0, oom_score_adj=0 [0.650332] swapper/0 cpuset=/ mems_allowed=0 [0.650856] CPU: 0 PID: 1 Comm: swapper/0 Tainted: GW 4.2.0-7-generic #7-Ubuntu [0.651788] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [0.652691] 88002fd906c8 88002fcf76a8 817b0465 000f [0.653556] 88002fd9 88002fcf7738 817ae2b5 88002ffc0e28 [0.654418] 880033c164c0 880033c16530 88002fd90068 88002fcf7748 ... [0.682339] Mem-Info: [756/1897] [0.682599] active_anon:0 inactive_anon:0 isolated_anon:0 [0.682599] active_file:2023 inactive_file:0 isolated_file:0 [0.682599] unevictable:14845 dirty:0 writeback:0 unstable:0 [0.682599] slab_reclaimable:1722 slab_unreclaimable:632 [0.682599] mapped:0 shmem:0 pagetables:0 bounce:0 [0.682599] free:0 free_pcp:2 free_cma:0 [0.685982] Node 0 DMA free:0kB min:0kB low:0kB high:0kB active_anon:0kB inactive_anon:0kB active_file:0kB inact ive_file:0kB unevictable:540kB isolated(anon):0kB isolated(file):0kB present:632kB managed:548kB mlocked:0kB dirty: 0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:8kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:540 all_unreclaimab le? yes [0.690450] lowmem_reserve[]: 0 0 0 0 [0.690928] Node 0 DMA32 free:0kB min:0kB low:0kB high:0kB active_anon:0kB inactive_anon:0kB active_file:8092kB inactive_file:0kB unevictable:58840kB isolated(anon):0kB isolated(file):0kB present:130420kB managed:78064kB mlocke d:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:6880kB slab_unreclaimable:2528kB kernel_stack:4 64kB pagetables:0kB unstable:0kB bounce:0kB free_pcp:8kB local_pcp:8kB free_cma:0kB writeback_tmp:0kB pages_scanned :58840 all_unreclaimable? yes [0.695547] lowmem_reserve[]: 0 0 0 0 [0.696049] Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0k B [0.697335] Node 0 DMA32: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB [0.698641] 16868 total pagecache pages [0.699075] 0 pages in swap cache [0.699448] Swap c
[Kernel-packages] [Bug 1496317] Re: kexec fails with OOM killer with the current crashkernel=128 value
** Description changed: - With a very basic Wily image, just trigger a crash with sysrq-trigger - after installing and setting up linux-crashdump and the kexec will fail - with the following : + [SRU justification] + This modification is required to fix memory shortage in the kexec booted kernel that blocks the creation of kernel crash dumps + + [Impact] + Without this fix, the kernel crash dump mechanism is unusable without applying a workaround + + [Fix] + Implement use of smaller initrd.img files located in /var/lib/kdump and used with the definition of KDUMP_KERNEL / KDUMP_INITRD in the config file. + + [Test Case] + - Create a system running the standard Wily release + - install the linux-crashdump metapackage + - Enable the kdump mechanism by setting USE_KDUMP=1 in /etc/default/kdump-tools + - Reboot to activate the crashkernel= kernel variable + - execute the following as root to trigger a kernel crash : + echo c > /proc/sysrq-trigger + + Without the fix, the kernel crash dump procedure will not complete (see + Original description) and will be stopped by the OOM killer. + + With the fix, the kernel crash dump procedure will complete normally. + + [Regression] + This is a new implementation, taken from upstream's 1.5.9 version. In the eventuality that the package is installed without using the new variable definitions in /etc/default/kdump-tools, the old method will be used and will lead to the original failure. + + + [Original description of the problem] + With a very basic Wily image, just trigger a crash with sysrq-trigger after installing and setting up linux-crashdump and the kexec will fail with the following : [0.334592] Trying to unpack rootfs image as initramfs... [0.649440] swapper/0 invoked oom-killer: gfp_mask=0x200d2, order=0, oom_score_adj=0 [0.650332] swapper/0 cpuset=/ mems_allowed=0 [0.650856] CPU: 0 PID: 1 Comm: swapper/0 Tainted: GW 4.2.0-7-generic #7-Ubuntu [0.651788] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [0.652691] 88002fd906c8 88002fcf76a8 817b0465 000f [0.653556] 88002fd9 88002fcf7738 817ae2b5 88002ffc0e28 [0.654418] 880033c164c0 880033c16530 88002fd90068 88002fcf7748 ... [0.682339] Mem-Info: [756/1897] [0.682599] active_anon:0 inactive_anon:0 isolated_anon:0 [0.682599] active_file:2023 inactive_file:0 isolated_file:0 [0.682599] unevictable:14845 dirty:0 writeback:0 unstable:0 [0.682599] slab_reclaimable:1722 slab_unreclaimable:632 [0.682599] mapped:0 shmem:0 pagetables:0 bounce:0 [0.682599] free:0 free_pcp:2 free_cma:0 [0.685982] Node 0 DMA free:0kB min:0kB low:0kB high:0kB active_anon:0kB inactive_anon:0kB active_file:0kB inact ive_file:0kB unevictable:540kB isolated(anon):0kB isolated(file):0kB present:632kB managed:548kB mlocked:0kB dirty: - 0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:8kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB + 0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:8kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:540 all_unreclaimab le? yes [0.690450] lowmem_reserve[]: 0 0 0 0 - [0.690928] Node 0 DMA32 free:0kB min:0kB low:0kB high:0kB active_anon:0kB inactive_anon:0kB active_file:8092kB + [0.690928] Node 0 DMA32 free:0kB min:0kB low:0kB high:0kB active_anon:0kB inactive_anon:0kB active_file:8092kB inactive_file:0kB unevictable:58840kB isolated(anon):0kB isolated(file):0kB present:130420kB managed:78064kB mlocke d:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:6880kB slab_unreclaimable:2528kB kernel_stack:4 64kB pagetables:0kB unstable:0kB bounce:0kB free_pcp:8kB local_pcp:8kB free_cma:0kB writeback_tmp:0kB pages_scanned :58840 all_unreclaimable? yes [0.695547] lowmem_reserve[]: 0 0 0 0 [0.696049] Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0k B - [0.697335] Node 0 DMA32: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = + [0.697335] Node 0 DMA32: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB [0.698641] 16868 total pagecache pages [0.699075] 0 pages in swap cache [0.699448] Swap cache stats: add 0, delete 0, find 0/0 [0.700029] Free swap = 0kB [0.700356] Total swap = 0kB [0.700679] 32763 pages RAM [0.700991] 0 pages HighMem/MovableOnly [0.701418] 13110 pages reserved [0.701778] 0 pages cma reserved [0.702139] 0 pages hwpoisoned [0.702481] [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_scor
[Kernel-packages] [Bug 1496317] Re: kexec fails with OOM killer with the current crashkernel=128 value
** Also affects: kexec-tools (Ubuntu Wily) Importance: Undecided Status: New ** Changed in: kexec-tools (Ubuntu Wily) Status: New => In Progress ** Changed in: kexec-tools (Ubuntu Wily) Assignee: (unassigned) => Louis Bouchard (louis-bouchard) ** Changed in: kexec-tools (Ubuntu Wily) Importance: Undecided => High ** Changed in: kexec-tools (Ubuntu) Status: In Progress => Fix Released ** Changed in: kexec-tools (Ubuntu) Assignee: Louis Bouchard (louis-bouchard) => (unassigned) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to kexec-tools in Ubuntu. https://bugs.launchpad.net/bugs/1496317 Title: kexec fails with OOM killer with the current crashkernel=128 value Status in kexec-tools package in Ubuntu: Fix Released Status in kexec-tools source package in Wily: In Progress Bug description: [SRU justification] This modification is required to fix memory shortage in the kexec booted kernel that blocks the creation of kernel crash dumps [Impact] Without this fix, the kernel crash dump mechanism is unusable without applying a workaround [Fix] Implement use of smaller initrd.img files located in /var/lib/kdump and used with the definition of KDUMP_KERNEL / KDUMP_INITRD in the config file. [Test Case] - Create a system running the standard Wily release - install the linux-crashdump metapackage - Enable the kdump mechanism by setting USE_KDUMP=1 in /etc/default/kdump-tools - Reboot to activate the crashkernel= kernel variable - execute the following as root to trigger a kernel crash : echo c > /proc/sysrq-trigger Without the fix, the kernel crash dump procedure will not complete (see Original description) and will be stopped by the OOM killer. With the fix, the kernel crash dump procedure will complete normally. [Regression] This is a new implementation, taken from upstream's 1.5.9 version. In the eventuality that the package is installed without using the new variable definitions in /etc/default/kdump-tools, the old method will be used and will lead to the original failure. [Original description of the problem] With a very basic Wily image, just trigger a crash with sysrq-trigger after installing and setting up linux-crashdump and the kexec will fail with the following : [0.334592] Trying to unpack rootfs image as initramfs... [0.649440] swapper/0 invoked oom-killer: gfp_mask=0x200d2, order=0, oom_score_adj=0 [0.650332] swapper/0 cpuset=/ mems_allowed=0 [0.650856] CPU: 0 PID: 1 Comm: swapper/0 Tainted: GW 4.2.0-7-generic #7-Ubuntu [0.651788] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [0.652691] 88002fd906c8 88002fcf76a8 817b0465 000f [0.653556] 88002fd9 88002fcf7738 817ae2b5 88002ffc0e28 [0.654418] 880033c164c0 880033c16530 88002fd90068 88002fcf7748 ... [0.682339] Mem-Info: [756/1897] [0.682599] active_anon:0 inactive_anon:0 isolated_anon:0 [0.682599] active_file:2023 inactive_file:0 isolated_file:0 [0.682599] unevictable:14845 dirty:0 writeback:0 unstable:0 [0.682599] slab_reclaimable:1722 slab_unreclaimable:632 [0.682599] mapped:0 shmem:0 pagetables:0 bounce:0 [0.682599] free:0 free_pcp:2 free_cma:0 [0.685982] Node 0 DMA free:0kB min:0kB low:0kB high:0kB active_anon:0kB inactive_anon:0kB active_file:0kB inact ive_file:0kB unevictable:540kB isolated(anon):0kB isolated(file):0kB present:632kB managed:548kB mlocked:0kB dirty: 0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:8kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:540 all_unreclaimab le? yes [0.690450] lowmem_reserve[]: 0 0 0 0 [0.690928] Node 0 DMA32 free:0kB min:0kB low:0kB high:0kB active_anon:0kB inactive_anon:0kB active_file:8092kB inactive_file:0kB unevictable:58840kB isolated(anon):0kB isolated(file):0kB present:130420kB managed:78064kB mlocke d:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:6880kB slab_unreclaimable:2528kB kernel_stack:4 64kB pagetables:0kB unstable:0kB bounce:0kB free_pcp:8kB local_pcp:8kB free_cma:0kB writeback_tmp:0kB pages_scanned :58840 all_unreclaimable? yes [0.695547] lowmem_reserve[]: 0 0 0 0 [0.696049] Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0k B [0.697335] Node 0 DMA32: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB [0.698641] 16868 total pagecache pages [0.699075] 0 pages in swap cache [0.699448] Swap cache stats: add 0, delete 0, find 0/0 [0
[Kernel-packages] [Bug 1496317] Re: kexec fails with OOM killer with the current crashkernel=128 value
** Patch removed: "lp1496317_small_initrd.debdiff" https://bugs.launchpad.net/ubuntu/+source/kexec-tools/+bug/1496317/+attachment/4477591/+files/lp1496317_small_initrd.debdiff -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to kexec-tools in Ubuntu. https://bugs.launchpad.net/bugs/1496317 Title: kexec fails with OOM killer with the current crashkernel=128 value Status in kexec-tools package in Ubuntu: In Progress Bug description: With a very basic Wily image, just trigger a crash with sysrq-trigger after installing and setting up linux-crashdump and the kexec will fail with the following : [0.334592] Trying to unpack rootfs image as initramfs... [0.649440] swapper/0 invoked oom-killer: gfp_mask=0x200d2, order=0, oom_score_adj=0 [0.650332] swapper/0 cpuset=/ mems_allowed=0 [0.650856] CPU: 0 PID: 1 Comm: swapper/0 Tainted: GW 4.2.0-7-generic #7-Ubuntu [0.651788] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [0.652691] 88002fd906c8 88002fcf76a8 817b0465 000f [0.653556] 88002fd9 88002fcf7738 817ae2b5 88002ffc0e28 [0.654418] 880033c164c0 880033c16530 88002fd90068 88002fcf7748 ... [0.682339] Mem-Info: [756/1897] [0.682599] active_anon:0 inactive_anon:0 isolated_anon:0 [0.682599] active_file:2023 inactive_file:0 isolated_file:0 [0.682599] unevictable:14845 dirty:0 writeback:0 unstable:0 [0.682599] slab_reclaimable:1722 slab_unreclaimable:632 [0.682599] mapped:0 shmem:0 pagetables:0 bounce:0 [0.682599] free:0 free_pcp:2 free_cma:0 [0.685982] Node 0 DMA free:0kB min:0kB low:0kB high:0kB active_anon:0kB inactive_anon:0kB active_file:0kB inact ive_file:0kB unevictable:540kB isolated(anon):0kB isolated(file):0kB present:632kB managed:548kB mlocked:0kB dirty: 0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:8kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:540 all_unreclaimab le? yes [0.690450] lowmem_reserve[]: 0 0 0 0 [0.690928] Node 0 DMA32 free:0kB min:0kB low:0kB high:0kB active_anon:0kB inactive_anon:0kB active_file:8092kB inactive_file:0kB unevictable:58840kB isolated(anon):0kB isolated(file):0kB present:130420kB managed:78064kB mlocke d:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:6880kB slab_unreclaimable:2528kB kernel_stack:4 64kB pagetables:0kB unstable:0kB bounce:0kB free_pcp:8kB local_pcp:8kB free_cma:0kB writeback_tmp:0kB pages_scanned :58840 all_unreclaimable? yes [0.695547] lowmem_reserve[]: 0 0 0 0 [0.696049] Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0k B [0.697335] Node 0 DMA32: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB [0.698641] 16868 total pagecache pages [0.699075] 0 pages in swap cache [0.699448] Swap cache stats: add 0, delete 0, find 0/0 [0.700029] Free swap = 0kB [0.700356] Total swap = 0kB [0.700679] 32763 pages RAM [0.700991] 0 pages HighMem/MovableOnly [0.701418] 13110 pages reserved [0.701778] 0 pages cma reserved [0.702139] 0 pages hwpoisoned [0.702481] [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name [0.703423] Kernel panic - not syncing: Out of memory and no killable processes... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kexec-tools/+bug/1496317/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1496317] Re: kexec fails with OOM killer with the current crashkernel=128 value
** Tags added: patch -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to kexec-tools in Ubuntu. https://bugs.launchpad.net/bugs/1496317 Title: kexec fails with OOM killer with the current crashkernel=128 value Status in kexec-tools package in Ubuntu: In Progress Bug description: With a very basic Wily image, just trigger a crash with sysrq-trigger after installing and setting up linux-crashdump and the kexec will fail with the following : [0.334592] Trying to unpack rootfs image as initramfs... [0.649440] swapper/0 invoked oom-killer: gfp_mask=0x200d2, order=0, oom_score_adj=0 [0.650332] swapper/0 cpuset=/ mems_allowed=0 [0.650856] CPU: 0 PID: 1 Comm: swapper/0 Tainted: GW 4.2.0-7-generic #7-Ubuntu [0.651788] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [0.652691] 88002fd906c8 88002fcf76a8 817b0465 000f [0.653556] 88002fd9 88002fcf7738 817ae2b5 88002ffc0e28 [0.654418] 880033c164c0 880033c16530 88002fd90068 88002fcf7748 ... [0.682339] Mem-Info: [756/1897] [0.682599] active_anon:0 inactive_anon:0 isolated_anon:0 [0.682599] active_file:2023 inactive_file:0 isolated_file:0 [0.682599] unevictable:14845 dirty:0 writeback:0 unstable:0 [0.682599] slab_reclaimable:1722 slab_unreclaimable:632 [0.682599] mapped:0 shmem:0 pagetables:0 bounce:0 [0.682599] free:0 free_pcp:2 free_cma:0 [0.685982] Node 0 DMA free:0kB min:0kB low:0kB high:0kB active_anon:0kB inactive_anon:0kB active_file:0kB inact ive_file:0kB unevictable:540kB isolated(anon):0kB isolated(file):0kB present:632kB managed:548kB mlocked:0kB dirty: 0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:8kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:540 all_unreclaimab le? yes [0.690450] lowmem_reserve[]: 0 0 0 0 [0.690928] Node 0 DMA32 free:0kB min:0kB low:0kB high:0kB active_anon:0kB inactive_anon:0kB active_file:8092kB inactive_file:0kB unevictable:58840kB isolated(anon):0kB isolated(file):0kB present:130420kB managed:78064kB mlocke d:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:6880kB slab_unreclaimable:2528kB kernel_stack:4 64kB pagetables:0kB unstable:0kB bounce:0kB free_pcp:8kB local_pcp:8kB free_cma:0kB writeback_tmp:0kB pages_scanned :58840 all_unreclaimable? yes [0.695547] lowmem_reserve[]: 0 0 0 0 [0.696049] Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0k B [0.697335] Node 0 DMA32: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB [0.698641] 16868 total pagecache pages [0.699075] 0 pages in swap cache [0.699448] Swap cache stats: add 0, delete 0, find 0/0 [0.700029] Free swap = 0kB [0.700356] Total swap = 0kB [0.700679] 32763 pages RAM [0.700991] 0 pages HighMem/MovableOnly [0.701418] 13110 pages reserved [0.701778] 0 pages cma reserved [0.702139] 0 pages hwpoisoned [0.702481] [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name [0.703423] Kernel panic - not syncing: Out of memory and no killable processes... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kexec-tools/+bug/1496317/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1496317] Re: kexec fails with OOM killer with the current crashkernel=128 value
First proposal for a fix to be discussed ** Patch added: "lp1496317_small_initrd.debdiff" https://bugs.launchpad.net/ubuntu/+source/kexec-tools/+bug/1496317/+attachment/4477591/+files/lp1496317_small_initrd.debdiff -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to kexec-tools in Ubuntu. https://bugs.launchpad.net/bugs/1496317 Title: kexec fails with OOM killer with the current crashkernel=128 value Status in kexec-tools package in Ubuntu: In Progress Bug description: With a very basic Wily image, just trigger a crash with sysrq-trigger after installing and setting up linux-crashdump and the kexec will fail with the following : [0.334592] Trying to unpack rootfs image as initramfs... [0.649440] swapper/0 invoked oom-killer: gfp_mask=0x200d2, order=0, oom_score_adj=0 [0.650332] swapper/0 cpuset=/ mems_allowed=0 [0.650856] CPU: 0 PID: 1 Comm: swapper/0 Tainted: GW 4.2.0-7-generic #7-Ubuntu [0.651788] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [0.652691] 88002fd906c8 88002fcf76a8 817b0465 000f [0.653556] 88002fd9 88002fcf7738 817ae2b5 88002ffc0e28 [0.654418] 880033c164c0 880033c16530 88002fd90068 88002fcf7748 ... [0.682339] Mem-Info: [756/1897] [0.682599] active_anon:0 inactive_anon:0 isolated_anon:0 [0.682599] active_file:2023 inactive_file:0 isolated_file:0 [0.682599] unevictable:14845 dirty:0 writeback:0 unstable:0 [0.682599] slab_reclaimable:1722 slab_unreclaimable:632 [0.682599] mapped:0 shmem:0 pagetables:0 bounce:0 [0.682599] free:0 free_pcp:2 free_cma:0 [0.685982] Node 0 DMA free:0kB min:0kB low:0kB high:0kB active_anon:0kB inactive_anon:0kB active_file:0kB inact ive_file:0kB unevictable:540kB isolated(anon):0kB isolated(file):0kB present:632kB managed:548kB mlocked:0kB dirty: 0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:8kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:540 all_unreclaimab le? yes [0.690450] lowmem_reserve[]: 0 0 0 0 [0.690928] Node 0 DMA32 free:0kB min:0kB low:0kB high:0kB active_anon:0kB inactive_anon:0kB active_file:8092kB inactive_file:0kB unevictable:58840kB isolated(anon):0kB isolated(file):0kB present:130420kB managed:78064kB mlocke d:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:6880kB slab_unreclaimable:2528kB kernel_stack:4 64kB pagetables:0kB unstable:0kB bounce:0kB free_pcp:8kB local_pcp:8kB free_cma:0kB writeback_tmp:0kB pages_scanned :58840 all_unreclaimable? yes [0.695547] lowmem_reserve[]: 0 0 0 0 [0.696049] Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0k B [0.697335] Node 0 DMA32: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB [0.698641] 16868 total pagecache pages [0.699075] 0 pages in swap cache [0.699448] Swap cache stats: add 0, delete 0, find 0/0 [0.700029] Free swap = 0kB [0.700356] Total swap = 0kB [0.700679] 32763 pages RAM [0.700991] 0 pages HighMem/MovableOnly [0.701418] 13110 pages reserved [0.701778] 0 pages cma reserved [0.702139] 0 pages hwpoisoned [0.702481] [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name [0.703423] Kernel panic - not syncing: Out of memory and no killable processes... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kexec-tools/+bug/1496317/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1496317] Re: kexec fails with OOM killer with the current crashkernel=128 value
** Changed in: kexec-tools (Ubuntu) Status: Confirmed => In Progress -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to kexec-tools in Ubuntu. https://bugs.launchpad.net/bugs/1496317 Title: kexec fails with OOM killer with the current crashkernel=128 value Status in kexec-tools package in Ubuntu: In Progress Bug description: With a very basic Wily image, just trigger a crash with sysrq-trigger after installing and setting up linux-crashdump and the kexec will fail with the following : [0.334592] Trying to unpack rootfs image as initramfs... [0.649440] swapper/0 invoked oom-killer: gfp_mask=0x200d2, order=0, oom_score_adj=0 [0.650332] swapper/0 cpuset=/ mems_allowed=0 [0.650856] CPU: 0 PID: 1 Comm: swapper/0 Tainted: GW 4.2.0-7-generic #7-Ubuntu [0.651788] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [0.652691] 88002fd906c8 88002fcf76a8 817b0465 000f [0.653556] 88002fd9 88002fcf7738 817ae2b5 88002ffc0e28 [0.654418] 880033c164c0 880033c16530 88002fd90068 88002fcf7748 ... [0.682339] Mem-Info: [756/1897] [0.682599] active_anon:0 inactive_anon:0 isolated_anon:0 [0.682599] active_file:2023 inactive_file:0 isolated_file:0 [0.682599] unevictable:14845 dirty:0 writeback:0 unstable:0 [0.682599] slab_reclaimable:1722 slab_unreclaimable:632 [0.682599] mapped:0 shmem:0 pagetables:0 bounce:0 [0.682599] free:0 free_pcp:2 free_cma:0 [0.685982] Node 0 DMA free:0kB min:0kB low:0kB high:0kB active_anon:0kB inactive_anon:0kB active_file:0kB inact ive_file:0kB unevictable:540kB isolated(anon):0kB isolated(file):0kB present:632kB managed:548kB mlocked:0kB dirty: 0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:8kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:540 all_unreclaimab le? yes [0.690450] lowmem_reserve[]: 0 0 0 0 [0.690928] Node 0 DMA32 free:0kB min:0kB low:0kB high:0kB active_anon:0kB inactive_anon:0kB active_file:8092kB inactive_file:0kB unevictable:58840kB isolated(anon):0kB isolated(file):0kB present:130420kB managed:78064kB mlocke d:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:6880kB slab_unreclaimable:2528kB kernel_stack:4 64kB pagetables:0kB unstable:0kB bounce:0kB free_pcp:8kB local_pcp:8kB free_cma:0kB writeback_tmp:0kB pages_scanned :58840 all_unreclaimable? yes [0.695547] lowmem_reserve[]: 0 0 0 0 [0.696049] Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0k B [0.697335] Node 0 DMA32: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB [0.698641] 16868 total pagecache pages [0.699075] 0 pages in swap cache [0.699448] Swap cache stats: add 0, delete 0, find 0/0 [0.700029] Free swap = 0kB [0.700356] Total swap = 0kB [0.700679] 32763 pages RAM [0.700991] 0 pages HighMem/MovableOnly [0.701418] 13110 pages reserved [0.701778] 0 pages cma reserved [0.702139] 0 pages hwpoisoned [0.702481] [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name [0.703423] Kernel panic - not syncing: Out of memory and no killable processes... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kexec-tools/+bug/1496317/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1496317] Re: kexec fails with OOM killer with the current crashkernel=128 value
One workaround is to edit /etc/initramfs-tools/initramfs.conf and to change : MODULES=most for MODULES=dep -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to kexec-tools in Ubuntu. https://bugs.launchpad.net/bugs/1496317 Title: kexec fails with OOM killer with the current crashkernel=128 value Status in kexec-tools package in Ubuntu: Confirmed Bug description: With a very basic Wily image, just trigger a crash with sysrq-trigger after installing and setting up linux-crashdump and the kexec will fail with the following : [0.334592] Trying to unpack rootfs image as initramfs... [0.649440] swapper/0 invoked oom-killer: gfp_mask=0x200d2, order=0, oom_score_adj=0 [0.650332] swapper/0 cpuset=/ mems_allowed=0 [0.650856] CPU: 0 PID: 1 Comm: swapper/0 Tainted: GW 4.2.0-7-generic #7-Ubuntu [0.651788] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 [0.652691] 88002fd906c8 88002fcf76a8 817b0465 000f [0.653556] 88002fd9 88002fcf7738 817ae2b5 88002ffc0e28 [0.654418] 880033c164c0 880033c16530 88002fd90068 88002fcf7748 ... [0.682339] Mem-Info: [756/1897] [0.682599] active_anon:0 inactive_anon:0 isolated_anon:0 [0.682599] active_file:2023 inactive_file:0 isolated_file:0 [0.682599] unevictable:14845 dirty:0 writeback:0 unstable:0 [0.682599] slab_reclaimable:1722 slab_unreclaimable:632 [0.682599] mapped:0 shmem:0 pagetables:0 bounce:0 [0.682599] free:0 free_pcp:2 free_cma:0 [0.685982] Node 0 DMA free:0kB min:0kB low:0kB high:0kB active_anon:0kB inactive_anon:0kB active_file:0kB inact ive_file:0kB unevictable:540kB isolated(anon):0kB isolated(file):0kB present:632kB managed:548kB mlocked:0kB dirty: 0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:8kB slab_unreclaimable:0kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:540 all_unreclaimab le? yes [0.690450] lowmem_reserve[]: 0 0 0 0 [0.690928] Node 0 DMA32 free:0kB min:0kB low:0kB high:0kB active_anon:0kB inactive_anon:0kB active_file:8092kB inactive_file:0kB unevictable:58840kB isolated(anon):0kB isolated(file):0kB present:130420kB managed:78064kB mlocke d:0kB dirty:0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:6880kB slab_unreclaimable:2528kB kernel_stack:4 64kB pagetables:0kB unstable:0kB bounce:0kB free_pcp:8kB local_pcp:8kB free_cma:0kB writeback_tmp:0kB pages_scanned :58840 all_unreclaimable? yes [0.695547] lowmem_reserve[]: 0 0 0 0 [0.696049] Node 0 DMA: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0k B [0.697335] Node 0 DMA32: 0*4kB 0*8kB 0*16kB 0*32kB 0*64kB 0*128kB 0*256kB 0*512kB 0*1024kB 0*2048kB 0*4096kB = 0kB [0.698641] 16868 total pagecache pages [0.699075] 0 pages in swap cache [0.699448] Swap cache stats: add 0, delete 0, find 0/0 [0.700029] Free swap = 0kB [0.700356] Total swap = 0kB [0.700679] 32763 pages RAM [0.700991] 0 pages HighMem/MovableOnly [0.701418] 13110 pages reserved [0.701778] 0 pages cma reserved [0.702139] 0 pages hwpoisoned [0.702481] [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name [0.703423] Kernel panic - not syncing: Out of memory and no killable processes... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kexec-tools/+bug/1496317/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
[Kernel-packages] [Bug 1496317] Re: kexec fails with OOM killer with the current crashkernel=128 value
With crashkernel=145, I get a bit more information : [1.351621] Mem-Info: [1.351897] active_anon:3939 inactive_anon:12 isolated_anon:0 [1.351897] active_file:1120 inactive_file:1335 isolated_file:0 [1.351897] unevictable:18546 dirty:0 writeback:0 unstable:0 [1.351897] slab_reclaimable:2235 slab_unreclaimable:1684 [1.351897] mapped:1440 shmem:16 pagetables:248 bounce:0 [1.351897] free:472 free_pcp:5 free_cma:0 [1.355454] Node 0 DMA free:480kB min:4kB low:4kB high:4kB active_anon:0kB inactive_anon:0kB active_file:0kB ina ctive_file:0kB unevictable:0kB isolated(anon):0kB isolated(file):0kB present:632kB managed:548kB mlocked:0kB dirty: 0kB writeback:0kB mapped:0kB shmem:0kB slab_reclaimable:0kB slab_unreclaimable:56kB kernel_stack:0kB pagetables:0kB unstable:0kB bounce:0kB free_pcp:0kB local_pcp:0kB free_cma:0kB writeback_tmp:0kB pages_scanned:0 all_unreclaimabl e? yes [1.359904] lowmem_reserve[]: 0 121 121 121 [1.360451] Node 0 DMA32 free:1408kB min:1408kB low:1760kB high:2112kB active_anon:15756kB inactive_anon:48kB ac tive_file:4480kB inactive_file:5340kB unevictable:74184kB isolated(anon):0kB isolated(file):0kB present:147828kB ma naged:126836kB mlocked:1716kB dirty:0kB writeback:0kB mapped:5760kB shmem:64kB slab_reclaimable:8940kB slab_unrecla imable:6680kB kernel_stack:1008kB pagetables:992kB unstable:0kB bounce:0kB free_pcp:20kB local_pcp:20kB free_cma:0k B writeback_tmp:0kB pages_scanned:72640 all_unreclaimable? yes [1.365436] lowmem_reserve[]: 0 0 0 0 [1.365914] Node 0 DMA: 0*4kB 1*8kB (U) 1*16kB (U) 0*32kB 1*64kB (U) 1*128kB (U) 1*256kB (U) 0*512kB 0*1024kB 0* 2048kB 0*4096kB = 472kB [1.367484] Node 0 DMA32: 2*4kB (UM) 1*8kB (U) 1*16kB (M) 3*32kB (UEM) 0*64kB 2*128kB (EM) 2*256kB (UE) 1*512kB (U) 0*1024kB 0*2048kB 0*4096kB = 1408kB [1.369238] Node 0 hugepages_total=0 hugepages_free=0 hugepages_surp=0 hugepages_size=2048kB [1.370177] 20930 total pagecache pages [1.370604] 0 pages in swap cache [1.370984] Swap cache stats: add 0, delete 0, find 0/0 [1.371563] Free swap = 0kB [1.371887] Total swap = 0kB [1.37] 37115 pages RAM [1.372542] 0 pages HighMem/MovableOnly [1.372970] 5269 pages reserved [1.373322] 0 pages cma reserved [1.373684] 0 pages hwpoisoned [1.374028] [ pid ] uid tgid total_vm rss nr_ptes nr_pmds swapents oom_score_adj name [1.374968] [ 97] 097 1169 217 8 30 0 udev [1.375899] [ 99] 099 6870 791 17 30 -1000 systemd-udevd [1.376932] [ 105] 0 105 6612 641 18 30 0 udevadm [1.377895] [ 106] 0 106 6738 774 16 30 0 systemd-udevd [1.378920] [ 107] 0 107 6804 818 16 30 0 systemd-udevd [1.379934] [ 108] 0 108 6804 848 17 30 0 systemd-udevd [1.380967] [ 109] 0 109 6804 821 16 30 0 systemd-udevd [1.381990] [ 110] 0 110 6804 843 16 30 0 systemd-udevd [1.383012] [ 111] 0 111 6804 834 16 30 0 systemd-udevd [1.384041] [ 112] 0 112 6804 844 16 30 0 systemd-udevd [1.385088] [ 113] 0 113 6804 781 16 30 0 systemd-udevd [1.386101] [ 114] 0 114 6837 868 16 30 0 systemd-udevd [1.387123] [ 115] 0 115 6837 860 16 30 0 systemd-udevd [1.388149] [ 119] 0 119 1091 188 7 30 0 watershed [1.389136] [ 120] 0 120 1169 187 8 30 0 sh [1.390052] [ 125] 0 125 9139 3657 23 30 0 lvm [1.390980] Out of memory: Kill process 125 (lvm) score 112 or sacrifice child [1.391774] Killed process 125 (lvm) total-vm:36556kB, anon-rss:10924kB, file-rss:3704kB Begin: Loading essential drivers ... done. Begin: Running /scripts/init-premount ... done. Begin: Mounting root file system ... Begin: Running /scripts/local-top ... done. Begin: Running /scripts/local-premount ... [1.732082] tsc: Refined TSC clocksource calibration: 3300.116 MHz [1.732786] clocksource: tsc: mask: 0x max_cycles: 0x2f91ba40ab4, max_idle_ns: 440795353086 ns done. Gave up waiting for root device. Common problems: - Boot args (cat /proc/cmdline) - Check rootdelay= (did the system wait long enough?) - Check root= (did the system wait for the right device?) - Missing modules (cat /proc/modules; ls /dev) ALERT! /dev/mapper/VividS--vg-root does not exist. Dropping to a shell! [ 3
