Re: kernel BUG at /usr/src/kernel/lib/dynamic_debug.c:267!
On Thu, Sep 10, 2020 at 08:23:23AM +1000, Stephen Rothwell wrote: > Hi Greg, > > On Wed, 9 Sep 2020 20:12:51 +0200 Greg Kroah-Hartman > wrote: > > > > I'll go revert both patches from my tree in the morning, which should > > clear these issues up. > > I have reverted them from linux-next today. > Dropped in my tree now too, thanks. greg k-h
Re: kernel BUG at /usr/src/kernel/lib/dynamic_debug.c:267!
Hi Greg, On Wed, 9 Sep 2020 20:12:51 +0200 Greg Kroah-Hartman wrote: > > I'll go revert both patches from my tree in the morning, which should > clear these issues up. I have reverted them from linux-next today. -- Cheers, Stephen Rothwell pgpiQBPntxJ9d.pgp Description: OpenPGP digital signature
Re: kernel BUG at /usr/src/kernel/lib/dynamic_debug.c:267!
On Wed, Sep 09, 2020 at 11:44:44AM -0600, jim.cro...@gmail.com wrote: > On Wed, Sep 9, 2020 at 6:24 AM Greg Kroah-Hartman > wrote: > > > > On Wed, Sep 09, 2020 at 10:00:25AM +0200, Petr Mladek wrote: > > > On Wed 2020-09-09 14:47:45, Masami Hiramatsu wrote: > > > > Hi Naresh, > > > > > > > > Thanks for reporting, it seems that you have run the > > > > kselftests/livepatch/test-livepatch.sh. > > > > Then, I think it is better to report to Livepatch maintainers too. (I > > > > Cc'd them) > > > > > > > > Thank you, > > > > > > > > On Wed, 9 Sep 2020 10:24:09 +0530 > > > > Naresh Kamboju wrote: > > > > > > > > > While testing livepatch test cases on x86_64 with Linux next 20200908 > > > > > tag kernel > > > > > this kernel BUG noticed several times. > > > > > > > > > > metadata: > > > > > git branch: master > > > > > git repo: > > > > > https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git > > > > > git commit: dff9f829e5b0181d4ed9d35aa62d695292399b54 > > > > > git describe: next-20200908 > > > > > kernel-config: > > > > > http://snapshots.linaro.org/openembedded/lkft/lkft/sumo/intel-corei7-64/lkft/linux-next/853/config > > > > > > > > > > kernel BUG log, > > > > > -- > > > > > [ 634.063970] % rmmod test_klp_livepatch > > > > > [ 634.114787] test_klp_atomic_replace: this has been live patched > > > > > [ 634.121953] % echo 0 > > > > > > /sys/kernel/livepatch/test_klp_atomic_replace/enabled > > > > > [ 634.129391] livepatch: 'test_klp_atomic_replace': starting > > > > > unpatching transition > > > > > [ 634.143990] livepatch: 'test_klp_atomic_replace': unpatching > > > > > complete > > > > > [ 634.156223] % rmmod test_klp_atomic_replace > > > > > [ 634.235451] [ cut here ] > > > > > [ 634.240314] kernel BUG at /usr/src/kernel/lib/dynamic_debug.c:267! > > > > > [ 634.246584] invalid opcode: [#1] SMP PTI > > > > > [ 634.250955] CPU: 0 PID: 12791 Comm: test-livepatch. Tainted: G > > > > > W K 5.9.0-rc4-next-20200908 #1 > > > > > [ 634.260615] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS > > > > > 2.2 05/23/2018 > > > > > [ 634.268007] RIP: 0010:ddebug_exec_query+0x77b/0xb90 > > > > > [ 634.272886] Code: 4c 89 ad 70 ff ff ff e9 db fb ff ff b8 03 00 00 > > > > > 00 e9 20 fb ff ff b8 02 00 00 00 e9 16 fb ff ff b8 01 00 00 00 e9 0c > > > > > fb ff ff <0f> 0b 31 c0 e9 03 fb ff ff 49 89 f4 48 89 f7 e9 78 f9 ff ff > > > > > 8b 15 > > > > > [ 634.291630] RSP: 0018:9f0c80a5bd18 EFLAGS: 00010246 > > > > > [ 634.296856] RAX: 003d RBX: RCX: > > > > > > > > > > [ 634.303987] RDX: 003d RSI: RDI: > > > > > 90db906583ec > > > > > [ 634.31] RBP: 9f0c80a5bde8 R08: 000a R09: > > > > > 003b > > > > > [ 634.318236] R10: 90db9261 R11: 0246 R12: > > > > > 90db906583ec > > > > > [ 634.325368] R13: be87cbc0 R14: R15: > > > > > 0004 > > > > > [ 634.332500] FS: 7fd37249a740() GS:90dbefa0() > > > > > knlGS: > > > > > [ 634.340578] CS: 0010 DS: ES: CR0: 80050033 > > > > > [ 634.346315] CR2: 00e6d00c CR3: 00026a4b8004 CR4: > > > > > 003706f0 > > > > > [ 634.353446] DR0: DR1: DR2: > > > > > > > > > > [ 634.360570] DR3: DR6: fffe0ff0 DR7: > > > > > 0400 > > > > > [ 634.367693] Call Trace: > > > > > [ 634.370139] ? lock_acquire+0xa6/0x390 > > > > > [ 634.373892] ? __might_fault+0x34/0x80 > > > > > [ 634.377648] ddebug_exec_queries+0x6e/0x140 > > > > > [ 634.381831] ddebug_proc_write+0x4b/0xa0 > > > > > [ 634.385756] full_proxy_write+0x5f/0x90 > > > > > [ 634
Re: kernel BUG at /usr/src/kernel/lib/dynamic_debug.c:267!
On Wed, Sep 9, 2020 at 6:24 AM Greg Kroah-Hartman wrote: > > On Wed, Sep 09, 2020 at 10:00:25AM +0200, Petr Mladek wrote: > > On Wed 2020-09-09 14:47:45, Masami Hiramatsu wrote: > > > Hi Naresh, > > > > > > Thanks for reporting, it seems that you have run the > > > kselftests/livepatch/test-livepatch.sh. > > > Then, I think it is better to report to Livepatch maintainers too. (I > > > Cc'd them) > > > > > > Thank you, > > > > > > On Wed, 9 Sep 2020 10:24:09 +0530 > > > Naresh Kamboju wrote: > > > > > > > While testing livepatch test cases on x86_64 with Linux next 20200908 > > > > tag kernel > > > > this kernel BUG noticed several times. > > > > > > > > metadata: > > > > git branch: master > > > > git repo: > > > > https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git > > > > git commit: dff9f829e5b0181d4ed9d35aa62d695292399b54 > > > > git describe: next-20200908 > > > > kernel-config: > > > > http://snapshots.linaro.org/openembedded/lkft/lkft/sumo/intel-corei7-64/lkft/linux-next/853/config > > > > > > > > kernel BUG log, > > > > -- > > > > [ 634.063970] % rmmod test_klp_livepatch > > > > [ 634.114787] test_klp_atomic_replace: this has been live patched > > > > [ 634.121953] % echo 0 > > > > > /sys/kernel/livepatch/test_klp_atomic_replace/enabled > > > > [ 634.129391] livepatch: 'test_klp_atomic_replace': starting > > > > unpatching transition > > > > [ 634.143990] livepatch: 'test_klp_atomic_replace': unpatching complete > > > > [ 634.156223] % rmmod test_klp_atomic_replace > > > > [ 634.235451] [ cut here ] > > > > [ 634.240314] kernel BUG at /usr/src/kernel/lib/dynamic_debug.c:267! > > > > [ 634.246584] invalid opcode: [#1] SMP PTI > > > > [ 634.250955] CPU: 0 PID: 12791 Comm: test-livepatch. Tainted: G > > > > W K 5.9.0-rc4-next-20200908 #1 > > > > [ 634.260615] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS > > > > 2.2 05/23/2018 > > > > [ 634.268007] RIP: 0010:ddebug_exec_query+0x77b/0xb90 > > > > [ 634.272886] Code: 4c 89 ad 70 ff ff ff e9 db fb ff ff b8 03 00 00 > > > > 00 e9 20 fb ff ff b8 02 00 00 00 e9 16 fb ff ff b8 01 00 00 00 e9 0c > > > > fb ff ff <0f> 0b 31 c0 e9 03 fb ff ff 49 89 f4 48 89 f7 e9 78 f9 ff ff > > > > 8b 15 > > > > [ 634.291630] RSP: 0018:9f0c80a5bd18 EFLAGS: 00010246 > > > > [ 634.296856] RAX: 003d RBX: RCX: > > > > > > > > [ 634.303987] RDX: 003d RSI: RDI: > > > > 90db906583ec > > > > [ 634.31] RBP: 9f0c80a5bde8 R08: 000a R09: > > > > 003b > > > > [ 634.318236] R10: 90db9261 R11: 0246 R12: > > > > 90db906583ec > > > > [ 634.325368] R13: be87cbc0 R14: R15: > > > > 0004 > > > > [ 634.332500] FS: 7fd37249a740() GS:90dbefa0() > > > > knlGS: > > > > [ 634.340578] CS: 0010 DS: ES: CR0: 80050033 > > > > [ 634.346315] CR2: 00e6d00c CR3: 00026a4b8004 CR4: > > > > 003706f0 > > > > [ 634.353446] DR0: DR1: DR2: > > > > > > > > [ 634.360570] DR3: DR6: fffe0ff0 DR7: > > > > 0400 > > > > [ 634.367693] Call Trace: > > > > [ 634.370139] ? lock_acquire+0xa6/0x390 > > > > [ 634.373892] ? __might_fault+0x34/0x80 > > > > [ 634.377648] ddebug_exec_queries+0x6e/0x140 > > > > [ 634.381831] ddebug_proc_write+0x4b/0xa0 > > > > [ 634.385756] full_proxy_write+0x5f/0x90 > > > > [ 634.389595] vfs_write+0xed/0x240 > > > > [ 634.392915] ksys_write+0xad/0xf0 > > > > [ 634.396233] ? syscall_trace_enter+0x17a/0x240 > > > > [ 634.400670] __x64_sys_write+0x1a/0x20 > > > > [ 634.404416] do_syscall_64+0x37/0x50 > > > > [ 634.407993] entry_SYSCALL_64_after_hwframe+0x44/0xa9 > > > > [ 634.413038] RIP: 0033:0x7fd371b84144 > > > > [ 634.416617] Code: 89 02 48 c7 c0 ff ff ff ff c3 66 2e 0
Re: kernel BUG at /usr/src/kernel/lib/dynamic_debug.c:267!
On Wed, Sep 09, 2020 at 10:00:25AM +0200, Petr Mladek wrote: > On Wed 2020-09-09 14:47:45, Masami Hiramatsu wrote: > > Hi Naresh, > > > > Thanks for reporting, it seems that you have run the > > kselftests/livepatch/test-livepatch.sh. > > Then, I think it is better to report to Livepatch maintainers too. (I Cc'd > > them) > > > > Thank you, > > > > On Wed, 9 Sep 2020 10:24:09 +0530 > > Naresh Kamboju wrote: > > > > > While testing livepatch test cases on x86_64 with Linux next 20200908 tag > > > kernel > > > this kernel BUG noticed several times. > > > > > > metadata: > > > git branch: master > > > git repo: > > > https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git > > > git commit: dff9f829e5b0181d4ed9d35aa62d695292399b54 > > > git describe: next-20200908 > > > kernel-config: > > > http://snapshots.linaro.org/openembedded/lkft/lkft/sumo/intel-corei7-64/lkft/linux-next/853/config > > > > > > kernel BUG log, > > > -- > > > [ 634.063970] % rmmod test_klp_livepatch > > > [ 634.114787] test_klp_atomic_replace: this has been live patched > > > [ 634.121953] % echo 0 > > > > /sys/kernel/livepatch/test_klp_atomic_replace/enabled > > > [ 634.129391] livepatch: 'test_klp_atomic_replace': starting > > > unpatching transition > > > [ 634.143990] livepatch: 'test_klp_atomic_replace': unpatching complete > > > [ 634.156223] % rmmod test_klp_atomic_replace > > > [ 634.235451] [ cut here ] > > > [ 634.240314] kernel BUG at /usr/src/kernel/lib/dynamic_debug.c:267! > > > [ 634.246584] invalid opcode: [#1] SMP PTI > > > [ 634.250955] CPU: 0 PID: 12791 Comm: test-livepatch. Tainted: G > > > W K 5.9.0-rc4-next-20200908 #1 > > > [ 634.260615] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS > > > 2.2 05/23/2018 > > > [ 634.268007] RIP: 0010:ddebug_exec_query+0x77b/0xb90 > > > [ 634.272886] Code: 4c 89 ad 70 ff ff ff e9 db fb ff ff b8 03 00 00 > > > 00 e9 20 fb ff ff b8 02 00 00 00 e9 16 fb ff ff b8 01 00 00 00 e9 0c > > > fb ff ff <0f> 0b 31 c0 e9 03 fb ff ff 49 89 f4 48 89 f7 e9 78 f9 ff ff > > > 8b 15 > > > [ 634.291630] RSP: 0018:9f0c80a5bd18 EFLAGS: 00010246 > > > [ 634.296856] RAX: 003d RBX: RCX: > > > > > > [ 634.303987] RDX: 003d RSI: RDI: > > > 90db906583ec > > > [ 634.31] RBP: 9f0c80a5bde8 R08: 000a R09: > > > 003b > > > [ 634.318236] R10: 90db9261 R11: 0246 R12: > > > 90db906583ec > > > [ 634.325368] R13: be87cbc0 R14: R15: > > > 0004 > > > [ 634.332500] FS: 7fd37249a740() GS:90dbefa0() > > > knlGS: > > > [ 634.340578] CS: 0010 DS: ES: CR0: 80050033 > > > [ 634.346315] CR2: 00e6d00c CR3: 00026a4b8004 CR4: > > > 003706f0 > > > [ 634.353446] DR0: DR1: DR2: > > > > > > [ 634.360570] DR3: DR6: fffe0ff0 DR7: > > > 0400 > > > [ 634.367693] Call Trace: > > > [ 634.370139] ? lock_acquire+0xa6/0x390 > > > [ 634.373892] ? __might_fault+0x34/0x80 > > > [ 634.377648] ddebug_exec_queries+0x6e/0x140 > > > [ 634.381831] ddebug_proc_write+0x4b/0xa0 > > > [ 634.385756] full_proxy_write+0x5f/0x90 > > > [ 634.389595] vfs_write+0xed/0x240 > > > [ 634.392915] ksys_write+0xad/0xf0 > > > [ 634.396233] ? syscall_trace_enter+0x17a/0x240 > > > [ 634.400670] __x64_sys_write+0x1a/0x20 > > > [ 634.404416] do_syscall_64+0x37/0x50 > > > [ 634.407993] entry_SYSCALL_64_after_hwframe+0x44/0xa9 > > > [ 634.413038] RIP: 0033:0x7fd371b84144 > > > [ 634.416617] Code: 89 02 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 > > > 00 00 00 00 66 90 48 8d 05 c1 e7 2c 00 8b 00 85 c0 75 13 b8 01 00 00 > > > 00 0f 05 <48> 3d 00 f0 ff ff 77 54 c3 0f 1f 00 41 54 49 89 d4 55 48 89 > > > f5 53 > > > [ 634.435362] RSP: 002b:7ffd19447658 EFLAGS: 0246 ORIG_RAX: > > > 0001 > > > [ 634.442928] RAX: ffda RBX: 00bc RCX: > > > 7fd371b84144 > > > [ 634.450059] RDX: 000
Re: kernel BUG at /usr/src/kernel/lib/dynamic_debug.c:267!
On Wed 2020-09-09 14:47:45, Masami Hiramatsu wrote: > Hi Naresh, > > Thanks for reporting, it seems that you have run the > kselftests/livepatch/test-livepatch.sh. > Then, I think it is better to report to Livepatch maintainers too. (I Cc'd > them) > > Thank you, > > On Wed, 9 Sep 2020 10:24:09 +0530 > Naresh Kamboju wrote: > > > While testing livepatch test cases on x86_64 with Linux next 20200908 tag > > kernel > > this kernel BUG noticed several times. > > > > metadata: > > git branch: master > > git repo: > > https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git > > git commit: dff9f829e5b0181d4ed9d35aa62d695292399b54 > > git describe: next-20200908 > > kernel-config: > > http://snapshots.linaro.org/openembedded/lkft/lkft/sumo/intel-corei7-64/lkft/linux-next/853/config > > > > kernel BUG log, > > -- > > [ 634.063970] % rmmod test_klp_livepatch > > [ 634.114787] test_klp_atomic_replace: this has been live patched > > [ 634.121953] % echo 0 > > > /sys/kernel/livepatch/test_klp_atomic_replace/enabled > > [ 634.129391] livepatch: 'test_klp_atomic_replace': starting > > unpatching transition > > [ 634.143990] livepatch: 'test_klp_atomic_replace': unpatching complete > > [ 634.156223] % rmmod test_klp_atomic_replace > > [ 634.235451] [ cut here ] > > [ 634.240314] kernel BUG at /usr/src/kernel/lib/dynamic_debug.c:267! > > [ 634.246584] invalid opcode: [#1] SMP PTI > > [ 634.250955] CPU: 0 PID: 12791 Comm: test-livepatch. Tainted: G > > W K 5.9.0-rc4-next-20200908 #1 > > [ 634.260615] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS > > 2.2 05/23/2018 > > [ 634.268007] RIP: 0010:ddebug_exec_query+0x77b/0xb90 > > [ 634.272886] Code: 4c 89 ad 70 ff ff ff e9 db fb ff ff b8 03 00 00 > > 00 e9 20 fb ff ff b8 02 00 00 00 e9 16 fb ff ff b8 01 00 00 00 e9 0c > > fb ff ff <0f> 0b 31 c0 e9 03 fb ff ff 49 89 f4 48 89 f7 e9 78 f9 ff ff > > 8b 15 > > [ 634.291630] RSP: 0018:9f0c80a5bd18 EFLAGS: 00010246 > > [ 634.296856] RAX: 003d RBX: RCX: > > > > [ 634.303987] RDX: 003d RSI: RDI: > > 90db906583ec > > [ 634.31] RBP: 9f0c80a5bde8 R08: 000a R09: > > 003b > > [ 634.318236] R10: 90db9261 R11: 0246 R12: > > 90db906583ec > > [ 634.325368] R13: be87cbc0 R14: R15: > > 0004 > > [ 634.332500] FS: 7fd37249a740() GS:90dbefa0() > > knlGS: > > [ 634.340578] CS: 0010 DS: ES: CR0: 80050033 > > [ 634.346315] CR2: 00e6d00c CR3: 00026a4b8004 CR4: > > 003706f0 > > [ 634.353446] DR0: DR1: DR2: > > > > [ 634.360570] DR3: DR6: fffe0ff0 DR7: > > 0400 > > [ 634.367693] Call Trace: > > [ 634.370139] ? lock_acquire+0xa6/0x390 > > [ 634.373892] ? __might_fault+0x34/0x80 > > [ 634.377648] ddebug_exec_queries+0x6e/0x140 > > [ 634.381831] ddebug_proc_write+0x4b/0xa0 > > [ 634.385756] full_proxy_write+0x5f/0x90 > > [ 634.389595] vfs_write+0xed/0x240 > > [ 634.392915] ksys_write+0xad/0xf0 > > [ 634.396233] ? syscall_trace_enter+0x17a/0x240 > > [ 634.400670] __x64_sys_write+0x1a/0x20 > > [ 634.404416] do_syscall_64+0x37/0x50 > > [ 634.407993] entry_SYSCALL_64_after_hwframe+0x44/0xa9 > > [ 634.413038] RIP: 0033:0x7fd371b84144 > > [ 634.416617] Code: 89 02 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 > > 00 00 00 00 66 90 48 8d 05 c1 e7 2c 00 8b 00 85 c0 75 13 b8 01 00 00 > > 00 0f 05 <48> 3d 00 f0 ff ff 77 54 c3 0f 1f 00 41 54 49 89 d4 55 48 89 > > f5 53 > > [ 634.435362] RSP: 002b:7ffd19447658 EFLAGS: 0246 ORIG_RAX: > > 0001 > > [ 634.442928] RAX: ffda RBX: 00bc RCX: > > 7fd371b84144 > > [ 634.450059] RDX: 00bc RSI: 00e6cf70 RDI: > > 0001 > > [ 634.457181] RBP: 00e6cf70 R08: 00e9 R09: > > > > [ 634.464305] R10: 7ffd19447c48 R11: 0246 R12: > > 7fd371e4e760 > > [ 634.471429] R13: 00bc R14: 7fd371e49760 R15: > > 00bc > > [ 634.478559] Modules linked in: trace_printk sch_fq 8021q > > iptable_filter xt_mark ip_tables cls_bpf sch_ing
Re: kernel BUG at /usr/src/kernel/lib/dynamic_debug.c:267!
Hi Naresh, Thanks for reporting, it seems that you have run the kselftests/livepatch/test-livepatch.sh. Then, I think it is better to report to Livepatch maintainers too. (I Cc'd them) Thank you, On Wed, 9 Sep 2020 10:24:09 +0530 Naresh Kamboju wrote: > While testing livepatch test cases on x86_64 with Linux next 20200908 tag > kernel > this kernel BUG noticed several times. > > metadata: > git branch: master > git repo: > https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git > git commit: dff9f829e5b0181d4ed9d35aa62d695292399b54 > git describe: next-20200908 > kernel-config: > http://snapshots.linaro.org/openembedded/lkft/lkft/sumo/intel-corei7-64/lkft/linux-next/853/config > > kernel BUG log, > -- > [ 634.063970] % rmmod test_klp_livepatch > [ 634.114787] test_klp_atomic_replace: this has been live patched > [ 634.121953] % echo 0 > > /sys/kernel/livepatch/test_klp_atomic_replace/enabled > [ 634.129391] livepatch: 'test_klp_atomic_replace': starting > unpatching transition > [ 634.143990] livepatch: 'test_klp_atomic_replace': unpatching complete > [ 634.156223] % rmmod test_klp_atomic_replace > [ 634.235451] --------[ cut here ]---- > [ 634.240314] kernel BUG at /usr/src/kernel/lib/dynamic_debug.c:267! > [ 634.246584] invalid opcode: [#1] SMP PTI > [ 634.250955] CPU: 0 PID: 12791 Comm: test-livepatch. Tainted: G > W K 5.9.0-rc4-next-20200908 #1 > [ 634.260615] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS > 2.2 05/23/2018 > [ 634.268007] RIP: 0010:ddebug_exec_query+0x77b/0xb90 > [ 634.272886] Code: 4c 89 ad 70 ff ff ff e9 db fb ff ff b8 03 00 00 > 00 e9 20 fb ff ff b8 02 00 00 00 e9 16 fb ff ff b8 01 00 00 00 e9 0c > fb ff ff <0f> 0b 31 c0 e9 03 fb ff ff 49 89 f4 48 89 f7 e9 78 f9 ff ff > 8b 15 > [ 634.291630] RSP: 0018:9f0c80a5bd18 EFLAGS: 00010246 > [ 634.296856] RAX: 003d RBX: RCX: > > [ 634.303987] RDX: 003d RSI: RDI: > 90db906583ec > [ 634.31] RBP: 9f0c80a5bde8 R08: 000a R09: > 003b > [ 634.318236] R10: 90db9261 R11: 0246 R12: > 90db906583ec > [ 634.325368] R13: be87cbc0 R14: R15: > 0004 > [ 634.332500] FS: 7fd37249a740() GS:90dbefa0() > knlGS: > [ 634.340578] CS: 0010 DS: ES: CR0: 80050033 > [ 634.346315] CR2: 00e6d00c CR3: 00026a4b8004 CR4: > 003706f0 > [ 634.353446] DR0: DR1: DR2: > > [ 634.360570] DR3: DR6: fffe0ff0 DR7: > 0400 > [ 634.367693] Call Trace: > [ 634.370139] ? lock_acquire+0xa6/0x390 > [ 634.373892] ? __might_fault+0x34/0x80 > [ 634.377648] ddebug_exec_queries+0x6e/0x140 > [ 634.381831] ddebug_proc_write+0x4b/0xa0 > [ 634.385756] full_proxy_write+0x5f/0x90 > [ 634.389595] vfs_write+0xed/0x240 > [ 634.392915] ksys_write+0xad/0xf0 > [ 634.396233] ? syscall_trace_enter+0x17a/0x240 > [ 634.400670] __x64_sys_write+0x1a/0x20 > [ 634.404416] do_syscall_64+0x37/0x50 > [ 634.407993] entry_SYSCALL_64_after_hwframe+0x44/0xa9 > [ 634.413038] RIP: 0033:0x7fd371b84144 > [ 634.416617] Code: 89 02 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 > 00 00 00 00 66 90 48 8d 05 c1 e7 2c 00 8b 00 85 c0 75 13 b8 01 00 00 > 00 0f 05 <48> 3d 00 f0 ff ff 77 54 c3 0f 1f 00 41 54 49 89 d4 55 48 89 > f5 53 > [ 634.435362] RSP: 002b:7ffd19447658 EFLAGS: 0246 ORIG_RAX: > 0001 > [ 634.442928] RAX: ffda RBX: 00bc RCX: > 7fd371b84144 > [ 634.450059] RDX: 00bc RSI: 00e6cf70 RDI: > 0001 > [ 634.457181] RBP: 00e6cf70 R08: 00e9 R09: > > [ 634.464305] R10: 7ffd19447c48 R11: 0246 R12: > 7fd371e4e760 > [ 634.471429] R13: 00bc R14: 7fd371e49760 R15: > 00bc > [ 634.478559] Modules linked in: trace_printk sch_fq 8021q > iptable_filter xt_mark ip_tables cls_bpf sch_ingress veth algif_hash > x86_pkg_temp_thermal fuse [last unloaded: test_klp_atomic_replace] > [ 634.495695] ---[ end trace d04d7e11bd1458bf ]--- > [ 634.500333] RIP: 0010:ddebug_exec_query+0x77b/0xb90 > [ 634.505218] Code: 4c 89 ad 70 ff ff ff e9 db fb ff ff b8 03 00 00 > 00 e9 20 fb ff ff b8 02 00 00 00 e9 16 fb ff ff b8 01 00 00 00 e9 0c > fb ff ff <0f> 0b 31 c0 e9 03 fb ff ff 49 89 f4 48 89 f7 e9 78 f9 ff ff > 8b 15 > [ 634.523969] RSP: 0018:9f0c80a5bd18 EFLAGS: 00010246 > [ 634.529197] RAX: 003
kernel BUG at /usr/src/kernel/lib/dynamic_debug.c:267!
While testing livepatch test cases on x86_64 with Linux next 20200908 tag kernel this kernel BUG noticed several times. metadata: git branch: master git repo: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git commit: dff9f829e5b0181d4ed9d35aa62d695292399b54 git describe: next-20200908 kernel-config: http://snapshots.linaro.org/openembedded/lkft/lkft/sumo/intel-corei7-64/lkft/linux-next/853/config kernel BUG log, -- [ 634.063970] % rmmod test_klp_livepatch [ 634.114787] test_klp_atomic_replace: this has been live patched [ 634.121953] % echo 0 > /sys/kernel/livepatch/test_klp_atomic_replace/enabled [ 634.129391] livepatch: 'test_klp_atomic_replace': starting unpatching transition [ 634.143990] livepatch: 'test_klp_atomic_replace': unpatching complete [ 634.156223] % rmmod test_klp_atomic_replace [ 634.235451] [ cut here ] [ 634.240314] kernel BUG at /usr/src/kernel/lib/dynamic_debug.c:267! [ 634.246584] invalid opcode: [#1] SMP PTI [ 634.250955] CPU: 0 PID: 12791 Comm: test-livepatch. Tainted: G W K 5.9.0-rc4-next-20200908 #1 [ 634.260615] Hardware name: Supermicro SYS-5019S-ML/X11SSH-F, BIOS 2.2 05/23/2018 [ 634.268007] RIP: 0010:ddebug_exec_query+0x77b/0xb90 [ 634.272886] Code: 4c 89 ad 70 ff ff ff e9 db fb ff ff b8 03 00 00 00 e9 20 fb ff ff b8 02 00 00 00 e9 16 fb ff ff b8 01 00 00 00 e9 0c fb ff ff <0f> 0b 31 c0 e9 03 fb ff ff 49 89 f4 48 89 f7 e9 78 f9 ff ff 8b 15 [ 634.291630] RSP: 0018:9f0c80a5bd18 EFLAGS: 00010246 [ 634.296856] RAX: 003d RBX: RCX: [ 634.303987] RDX: 003d RSI: RDI: 90db906583ec [ 634.31] RBP: 9f0c80a5bde8 R08: 000a R09: 003b [ 634.318236] R10: 90db9261 R11: 0246 R12: 90db906583ec [ 634.325368] R13: be87cbc0 R14: R15: 0004 [ 634.332500] FS: 7fd37249a740() GS:90dbefa0() knlGS: [ 634.340578] CS: 0010 DS: ES: CR0: 80050033 [ 634.346315] CR2: 00e6d00c CR3: 00026a4b8004 CR4: 003706f0 [ 634.353446] DR0: DR1: DR2: [ 634.360570] DR3: DR6: fffe0ff0 DR7: 0400 [ 634.367693] Call Trace: [ 634.370139] ? lock_acquire+0xa6/0x390 [ 634.373892] ? __might_fault+0x34/0x80 [ 634.377648] ddebug_exec_queries+0x6e/0x140 [ 634.381831] ddebug_proc_write+0x4b/0xa0 [ 634.385756] full_proxy_write+0x5f/0x90 [ 634.389595] vfs_write+0xed/0x240 [ 634.392915] ksys_write+0xad/0xf0 [ 634.396233] ? syscall_trace_enter+0x17a/0x240 [ 634.400670] __x64_sys_write+0x1a/0x20 [ 634.404416] do_syscall_64+0x37/0x50 [ 634.407993] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 634.413038] RIP: 0033:0x7fd371b84144 [ 634.416617] Code: 89 02 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 8d 05 c1 e7 2c 00 8b 00 85 c0 75 13 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 54 c3 0f 1f 00 41 54 49 89 d4 55 48 89 f5 53 [ 634.435362] RSP: 002b:7ffd19447658 EFLAGS: 0246 ORIG_RAX: 0001 [ 634.442928] RAX: ffda RBX: 00bc RCX: 7fd371b84144 [ 634.450059] RDX: 00bc RSI: 00e6cf70 RDI: 0001 [ 634.457181] RBP: 00e6cf70 R08: 00e9 R09: [ 634.464305] R10: 7ffd19447c48 R11: 0246 R12: 7fd371e4e760 [ 634.471429] R13: 00bc R14: 7fd371e49760 R15: 00bc [ 634.478559] Modules linked in: trace_printk sch_fq 8021q iptable_filter xt_mark ip_tables cls_bpf sch_ingress veth algif_hash x86_pkg_temp_thermal fuse [last unloaded: test_klp_atomic_replace] [ 634.495695] ---[ end trace d04d7e11bd1458bf ]--- [ 634.500333] RIP: 0010:ddebug_exec_query+0x77b/0xb90 [ 634.505218] Code: 4c 89 ad 70 ff ff ff e9 db fb ff ff b8 03 00 00 00 e9 20 fb ff ff b8 02 00 00 00 e9 16 fb ff ff b8 01 00 00 00 e9 0c fb ff ff <0f> 0b 31 c0 e9 03 fb ff ff 49 89 f4 48 89 f7 e9 78 f9 ff ff 8b 15 [ 634.523969] RSP: 0018:9f0c80a5bd18 EFLAGS: 00010246 [ 634.529197] RAX: 003d RBX: RCX: [ 634.536330] RDX: 003d RSI: RDI: 90db906583ec [ 634.543462] RBP: 9f0c80a5bde8 R08: 000a R09: 003b [ 634.550593] R10: 90db9261 R11: 0246 R12: 90db906583ec [ 634.557727] R13: be87cbc0 R14: R15: 0004 [ 634.564869] FS: 7fd37249a740() GS:90dbefa0() knlGS: [ 634.572953] CS: 0010 DS: ES: CR0: 80050033 [ 634.578699] CR2: 00e6d00c CR3: 00026a4b8004 CR4: 003706f0 [ 634.585829] DR0: DR1: DR2: [ 634.592964] DR3: DR6: fffe0ff0
