While running LTP mm tests on x86_64 the following kernel BUG was noticed on Linux next-20220513 [1].
mmapstress01 1 TPASS : Test passed mmapstress02 1 TPASS : Test passed mmapstress03 0 TINFO : uname.machine=x86_64 kernel is 64bit mmapstress03 1 TPASS : Test passed [ 666.897222] ------------[ cut here ]------------ [ 666.897260] kernel BUG at mm/mmap.c:3235! [ 666.897285] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI [ 666.899420] CPU: 3 PID: 25230 Comm: mmapstress03 Not tainted 5.18.0-rc6-next-20220513 #1 [ 666.900552] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 666.901868] RIP: 0010:exit_mmap+0x32c/0x3a0 [ 666.902542] Code: 87 78 03 00 00 00 00 00 02 0f 84 41 fe ff ff 4c 89 ff e8 37 bb fa ff f0 41 80 8f 7a 03 00 00 20 e9 2b fe ff ff e8 74 e5 e1 00 <0f> 0b 65 8b 05 b3 ab 63 55 89 c0 48 0f a3 05 39 4b f0 01 0f 83 36 [ 666.905542] RSP: 0018:ffff991342abbd10 EFLAGS: 00010202 [ 666.906334] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff93ea0353540c [ 666.907464] RDX: ffffffffffffffff RSI: 0000000000000000 RDI: ffff991342abbd18 [ 666.908589] RBP: ffff991342abbe08 R08: 00007ffe337a6fff R09: 0000000000000009 [ 666.909745] R10: ffffffffffffff00 R11: ffff991342abbd40 R12: 0000000000000058 [ 666.910810] R13: ffff991342abbd18 R14: 0000000000000012 R15: ffff93ea07f8d800 [ 666.911940] FS: 00007fad8494b580(0000) GS:ffff93ea3bd80000(0000) knlGS:0000000000000000 [ 666.913153] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 666.914147] CR2: 0000000000bba268 CR3: 0000000075610000 CR4: 00000000003506e0 [ 666.915119] Call Trace: [ 666.915473] <TASK> [ 666.915805] __mmput+0x47/0x100 [ 666.916280] mmput+0x20/0x30 [ 666.916677] exit_mm+0xe7/0x150 [ 666.917116] do_exit+0x1c5/0xa40 [ 666.917566] ? __audit_syscall_entry+0x109/0x130 [ 666.918220] do_group_exit+0x54/0xb0 [ 666.918708] __do_sys_exit_group+0xf/0x10 [ 666.919249] __se_sys_exit_group+0xe/0x10 [ 666.919790] __x64_sys_exit_group+0x12/0x20 [ 666.920356] do_syscall_64+0x35/0x60 [ 666.920876] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 666.921561] RIP: 0033:0x7fad842c1846 [ 666.922095] Code: Unable to access opcode bytes at RIP 0x7fad842c181c. [ 666.922959] RSP: 002b:00007ffe336ad8b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 666.923954] RAX: ffffffffffffffda RBX: 00007fad845a9740 RCX: 00007fad842c1846 [ 666.924895] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 666.925846] RBP: 0000000000000000 R08: 00000000000000e7 R09: ffffffffffffff80 [ 666.926779] R10: 0000000000000002 R11: 0000000000000246 R12: 00007fad845a9740 [ 666.927711] R13: 0000000000000001 R14: 00007fad845b2628 R15: 0000000000000000 [ 666.928671] </TASK> [ 666.928976] Modules linked in: [ 666.929491] ---[ end trace 0000000000000000 ]--- [ 666.929502] RIP: 0010:exit_mmap+0x32c/0x3a0 [ 666.929508] Code: 87 78 03 00 00 00 00 00 02 0f 84 41 fe ff ff 4c 89 ff e8 37 bb fa ff f0 41 80 8f 7a 03 00 00 20 e9 2b fe ff ff e8 74 e5 e1 00 <0f> 0b 65 8b 05 b3 ab 63 55 89 c0 48 0f a3 05 39 4b f0 01 0f 83 36 [ 666.929511] RSP: 0018:ffff991342abbd10 EFLAGS: 00010202 [ 666.929513] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff93ea0353540c [ 666.929516] RDX: ffffffffffffffff RSI: 0000000000000000 RDI: ffff991342abbd18 [ 666.929518] RBP: ffff991342abbe08 R08: 00007ffe337a6fff R09: 0000000000000009 [ 666.929520] R10: ffffffffffffff00 R11: ffff991342abbd40 R12: 0000000000000058 [ 666.929522] R13: ffff991342abbd18 R14: 0000000000000012 R15: ffff93ea07f8d800 [ 666.929527] FS: 00007fad8494b580(0000) GS:ffff93ea3bd80000(0000) knlGS:0000000000000000 [ 666.929531] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 666.929535] CR2: 0000000000bba268 CR3: 0000000075610000 CR4: 00000000003506e0 [ 666.929540] Fixing recursive fault but reboot is needed! [ 666.929544] BUG: using smp_processor_id() in preemptible [00000000] code: mmapstress03/25230 [ 666.929562] caller is debug_smp_processor_id+0x17/0x20 [ 666.929575] CPU: 3 PID: 25230 Comm: mmapstress03 Tainted: G D 5.18.0-rc6-next-20220513 #1 [ 666.929580] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 666.929582] Call Trace: [ 666.929584] <TASK> [ 666.929586] dump_stack_lvl+0x6c/0x9a [ 666.929590] dump_stack+0x10/0x12 [ 666.929594] check_preemption_disabled+0x10f/0x120 [ 666.929606] debug_smp_processor_id+0x17/0x20 [ 666.929609] __schedule+0x36/0x600 [ 666.929618] ? trace_preempt_on+0x31/0x40 [ 666.929634] do_task_dead+0x41/0x50 [ 666.929661] make_task_dead+0xd3/0xe0 [ 666.929664] rewind_stack_and_make_dead+0x17/0x18 [ 666.929702] RIP: 0033:0x7fad842c1846 [ 666.929705] Code: Unable to access opcode bytes at RIP 0x7fad842c181c. [ 666.929706] RSP: 002b:00007ffe336ad8b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 666.929709] RAX: ffffffffffffffda RBX: 00007fad845a9740 RCX: 00007fad842c1846 [ 666.929710] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 666.929711] RBP: 0000000000000000 R08: 00000000000000e7 R09: ffffffffffffff80 [ 666.929712] R10: 0000000000000002 R11: 0000000000000246 R12: 00007fad845a9740 [ 666.929714] R13: 0000000000000001 R14: 00007fad845b2628 R15: 0000000000000000 [ 666.929717] </TASK> [ 666.929718] BUG: scheduling while atomic: mmapstress03/25230/0x00000000 [ 666.929721] Modules linked in: [ 666.929722] Preemption disabled at: [ 666.929728] [<ffffffffaa82a574>] do_task_dead+0x24/0x50 [ 666.929733] CPU: 3 PID: 25230 Comm: mmapstress03 Tainted: G D 5.18.0-rc6-next-20220513 #1 [ 666.929736] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 [ 666.929738] Call Trace: [ 666.929739] <TASK> [ 666.929739] dump_stack_lvl+0x6c/0x9a [ 666.929743] ? do_task_dead+0x24/0x50 [ 666.929747] dump_stack+0x10/0x12 [ 666.929750] __schedule_bug+0xd2/0x100 [ 666.929753] __schedule+0x471/0x600 [ 666.929756] ? trace_preempt_on+0x31/0x40 [ 666.929759] do_task_dead+0x41/0x50 [ 666.929763] make_task_dead+0xd3/0xe0 [ 666.929766] rewind_stack_and_make_dead+0x17/0x18 [ 666.929768] RIP: 0033:0x7fad842c1846 [ 666.929771] Code: Unable to access opcode bytes at RIP 0x7fad842c181c. [ 666.929772] RSP: 002b:00007ffe336ad8b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 666.929774] RAX: ffffffffffffffda RBX: 00007fad845a9740 RCX: 00007fad842c1846 [ 666.929775] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 666.929777] RBP: 0000000000000000 R08: 00000000000000e7 R09: ffffffffffffff80 [ 666.929778] R10: 0000000000000002 R11: 0000000000000246 R12: 00007fad845a9740 [ 666.929779] R13: 0000000000000001 R14: 00007fad845b2628 R15: 0000000000000000Running with 50*40 (== 2000) tasks.
Reported-by: Linux Kernel Functional Testing lkft@linaro.org
metadata: git_ref: master git_repo: '' git_sha: 1e1b28b936aed946122b4e0991e7144fdbbfd77e git_describe: next-20220513 kernel_version: 5.18.0-rc6 kernel-config: https://builds.tuxbuild.com/296PqKcUcCQSykZbASUqmdlP33g/config build-url: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next/-/pipelines/538244935 artifact-location: https://builds.tuxbuild.com/296PqKcUcCQSykZbASUqmdlP33g toolchain: clang-12
-- Linaro LKFT https://lkft.linaro.org
[1] https://lkft.validation.linaro.org/scheduler/job/5021584#L2916