Messages in this thread | | | From | Chaitanya Kulkarni <> | Subject | Re: [RFC] nvmet: Always remove processed AER elements from list | Date | Wed, 30 Oct 2019 19:58:32 +0000 |
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On 10/30/2019 08:24 AM, Daniel Wagner wrote: > Hi, > > I've got following oops: > > PID: 79413 TASK: ffff92f03a814ec0 CPU: 19 COMMAND: "kworker/19:2" > #0 [ffffa5308b8c3c58] machine_kexec at ffffffff8e05dd02 > #1 [ffffa5308b8c3ca8] __crash_kexec at ffffffff8e12102a > #2 [ffffa5308b8c3d68] crash_kexec at ffffffff8e122019 > #3 [ffffa5308b8c3d80] oops_end at ffffffff8e02e091 > #4 [ffffa5308b8c3da0] general_protection at ffffffff8e8015c5 > [exception RIP: nvmet_async_event_work+94] > RIP: ffffffffc0d9a80e RSP: ffffa5308b8c3e58 RFLAGS: 00010202 > RAX: dead000000000100 RBX: ffff92dcbc7464b0 RCX: 0000000000000002 > RDX: 0000000000040002 RSI: 38ffff92dc9814cf RDI: ffff92f217722f20 > RBP: ffff92dcbc746418 R8: 0000000000000000 R9: 0000000000000000 > R10: 000000000000035b R11: ffff92efb8dd2091 R12: ffff92dcbc7464a0 > R13: ffff92dbe03a5f29 R14: 0000000000000000 R15: 0ffff92f92f26864 > ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 > #5 [ffffa5308b8c3e78] process_one_work at ffffffff8e0a3b0c > #6 [ffffa5308b8c3eb8] worker_thread at ffffffff8e0a41e7 > #7 [ffffa5308b8c3f10] kthread at ffffffff8e0a93af > #8 [ffffa5308b8c3f50] ret_from_fork at ffffffff8e800235 > > this maps to nvmet_async_event_results. So it looks like this function > access a stale aen pointer: > > static u32 nvmet_async_event_result(struct nvmet_async_event *aen) > { > return aen->event_type | (aen->event_info << 8) | (aen->log_page << 16); > } Can you please explain the test setup ? Is that coming from the tests present in the blktests ? if so you can please provide test number ?
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