L.S., On current xen-unstable (4.14 to be) and AMD cpu:
After rebooting the host, while the guests are starting, I hit the assertion below. xen-staging-4.13 seems fine on the same machine. -- Sander (XEN) [2019-12-04 17:03:25.062] grant_table.c:1808:d7v0 Expanding d7 grant table from 3 to 4 frames (XEN) [2019-12-04 17:03:25.365] Assertion '!preempt_count()' failed at preempt.c:36 (XEN) [2019-12-04 17:03:25.365] ----[ Xen-4.14-unstable x86_64 debug=y Not tainted ]---- (XEN) [2019-12-04 17:03:25.365] CPU: 0 (XEN) [2019-12-04 17:03:25.365] RIP: e008:[<ffff82d080224b2d>] ASSERT_NOT_IN_ATOMIC+0x46/0x4c (XEN) [2019-12-04 17:03:25.365] RFLAGS: 0000000000010202 CONTEXT: hypervisor (d0v5) (XEN) [2019-12-04 17:03:25.365] rax: ffff82d080597020 rbx: ffff83069fd26000 rcx: 00000000000000a2 (XEN) [2019-12-04 17:03:25.365] rdx: 0000000000000000 rsi: ffff8306b20d38a0 rdi: ffff83069fd55b38 (XEN) [2019-12-04 17:03:25.365] rbp: ffff8300c7c8fee8 rsp: ffff8300c7c8fee8 r8: deadbeefdeadf00d (XEN) [2019-12-04 17:03:25.365] r9: deadbeefdeadf00d r10: 0000000000000000 r11: 0000000000000000 (XEN) [2019-12-04 17:03:25.365] r12: 0000000000000000 r13: 0000000000000000 r14: 0000000000000000 (XEN) [2019-12-04 17:03:25.365] r15: 0000000000000000 cr0: 0000000080050033 cr4: 00000000000006e0 (XEN) [2019-12-04 17:03:25.365] cr3: 00000004630a3000 cr2: 00007f602bd4b4f0 (XEN) [2019-12-04 17:03:25.365] fsb: 00007f602b08cbc0 gsb: ffff88807d540000 gss: 0000000000000000 (XEN) [2019-12-04 17:03:25.365] ds: 0000 es: 0000 fs: 0000 gs: 0000 ss: e010 cs: e008 (XEN) [2019-12-04 17:03:25.365] Xen code around <ffff82d080224b2d> (ASSERT_NOT_IN_ATOMIC+0x46/0x4c): (XEN) [2019-12-04 17:03:25.365] 58 f6 c4 02 74 06 5d c3 <0f> 0b 0f 0b 0f 0b 55 48 89 e5 48 8d 05 e6 24 37 (XEN) [2019-12-04 17:03:25.365] Xen stack trace from rsp=ffff8300c7c8fee8: (XEN) [2019-12-04 17:03:25.365] 00007cff383700e7 ffff82d080385065 0000000000000000 00007ffe22bf6d90 (XEN) [2019-12-04 17:03:25.365] 0000000000305000 00007ffe22bf6d90 ffff88805a2d8700 ffff8880703495f0 (XEN) [2019-12-04 17:03:25.365] 0000000000000282 0000000000000000 ffff888078435600 0000000000000000 (XEN) [2019-12-04 17:03:25.365] 0000000000000000 ffffffff8100148a 0000000000000000 0000000000000000 (XEN) [2019-12-04 17:03:25.365] deadbeefdeadf00d 0000010000000000 ffffffff8100148a 000000000000e033 (XEN) [2019-12-04 17:03:25.365] 0000000000000282 ffffc90004dafd88 000000000000e02b 003e6be50048ffe0 (XEN) [2019-12-04 17:03:25.365] 003e6d0f00094f03 003e6e0300000000 003e699d0048ffe0 0000e01000000000 (XEN) [2019-12-04 17:03:25.365] ffff83069fd26000 0000000000000000 00000000000006e0 0000000000000000 (XEN) [2019-12-04 17:03:25.365] 0000000000000000 003e040000000000 003e78f000094ea0 (XEN) [2019-12-04 17:03:25.365] Xen call trace: (XEN) [2019-12-04 17:03:25.365] [<ffff82d080224b2d>] R ASSERT_NOT_IN_ATOMIC+0x46/0x4c (XEN) [2019-12-04 17:03:25.365] [<ffff82d080385065>] F x86_64/entry.S#test_all_events+0x6/0x3d (XEN) [2019-12-04 17:03:25.365] (XEN) [2019-12-04 17:03:26.089] (XEN) [2019-12-04 17:03:26.098] **************************************** (XEN) [2019-12-04 17:03:26.117] Panic on CPU 0: (XEN) [2019-12-04 17:03:26.130] Assertion '!preempt_count()' failed at preempt.c:36 (XEN) [2019-12-04 17:03:26.152] **************************************** (XEN) [2019-12-04 17:03:26.171] (XEN) [2019-12-04 17:03:26.180] Reboot in five seconds... _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel