umount fails because of stale loopback during interrupted run of ltp. #28
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This is on a small VM, with just 2GB for NOVA. |
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Seems likely this is related somehow to #40. |
juno-kim
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Crash dump shows following instructions crash> bt PID: 0 TASK: ffffffffbe412480 CPU: 0 COMMAND: "swapper/0" #0 [ffff891ee0003868] machine_kexec at ffffffffbd063ef1 #1 [ffff891ee00038c8] __crash_kexec at ffffffffbd12b6f2 #2 [ffff891ee0003998] crash_kexec at ffffffffbd12c84c #3 [ffff891ee00039b8] oops_end at ffffffffbd030f0a #4 [ffff891ee00039e0] no_context at ffffffffbd074643 #5 [ffff891ee0003a40] __bad_area_nosemaphore at ffffffffbd07496e #6 [ffff891ee0003a90] bad_area_nosemaphore at ffffffffbd074a64 #7 [ffff891ee0003aa0] __do_page_fault at ffffffffbd074b0a #8 [ffff891ee0003b18] do_page_fault at ffffffffbd074fc8 #9 [ffff891ee0003b50] page_fault at ffffffffbda01925 [exception RIP: qlt_schedule_sess_for_deletion+15] RIP: ffffffffc02e526f RSP: ffff891ee0003c08 RFLAGS: 00010046 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffffc0307847 RDX: 00000000000020e6 RSI: ffff891edbc377c8 RDI: 0000000000000000 RBP: ffff891ee0003c18 R8: ffffffffc02f0b20 R9: 0000000000000250 R10: 0000000000000258 R11: 000000000000b780 R12: ffff891ed9b43000 R13: 00000000000000f0 R14: 0000000000000006 R15: ffff891edbc377c8 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 #10 [ffff891ee0003c20] qla2x00_fcport_event_handler at ffffffffc02853d3 [qla2xxx] #11 [ffff891ee0003cf0] __dta_qla24xx_async_gnl_sp_done_333 at ffffffffc0285a1d [qla2xxx] #12 [ffff891ee0003de8] qla24xx_process_response_queue at ffffffffc02a2eb5 [qla2xxx] #13 [ffff891ee0003e88] qla24xx_msix_rsp_q at ffffffffc02a5403 [qla2xxx] #14 [ffff891ee0003ec0] __handle_irq_event_percpu at ffffffffbd0f4c59 #15 [ffff891ee0003f10] handle_irq_event_percpu at ffffffffbd0f4e02 #16 [ffff891ee0003f40] handle_irq_event at ffffffffbd0f4e90 #17 [ffff891ee0003f68] handle_edge_irq at ffffffffbd0f8984 #18 [ffff891ee0003f88] handle_irq at ffffffffbd0305d5 #19 [ffff891ee0003fb8] do_IRQ at ffffffffbda02a18 --- <IRQ stack> --- #20 [ffffffffbe403d30] ret_from_intr at ffffffffbda0094e [exception RIP: unknown or invalid address] RIP: 000000000000001f RSP: 0000000000000000 RFLAGS: fff3b8c2091ebb3f RAX: ffffbba5a0000200 RBX: 0000be8cdfa8f9fa RCX: 0000000000000018 RDX: 0000000000000101 RSI: 000000000000015d RDI: 0000000000000193 RBP: 0000000000000083 R8: ffffffffbe403e38 R9: 0000000000000002 R10: 0000000000000000 R11: ffffffffbe56b820 R12: ffff891ee001cf00 R13: ffffffffbd11c0a4 R14: ffffffffbe403d60 R15: 0000000000000001 ORIG_RAX: ffff891ee0022ac0 CS: 0000 SS: ffffffffffffffb9 bt: WARNING: possibly bogus exception frame #21 [ffffffffbe403dd8] cpuidle_enter_state at ffffffffbd67c6fd #22 [ffffffffbe403e40] cpuidle_enter at ffffffffbd67c907 #23 [ffffffffbe403e50] call_cpuidle at ffffffffbd0d98f3 #24 [ffffffffbe403e60] do_idle at ffffffffbd0d9b42 #25 [ffffffffbe403e98] cpu_startup_entry at ffffffffbd0d9da3 #26 [ffffffffbe403ec0] rest_init at ffffffffbd81d4aa #27 [ffffffffbe403ed0] start_kernel at ffffffffbe67d2ca #28 [ffffffffbe403f28] x86_64_start_reservations at ffffffffbe67c675 #29 [ffffffffbe403f38] x86_64_start_kernel at ffffffffbe67c6eb #30 [ffffffffbe403f50] secondary_startup_64 at ffffffffbd0000d5 Fixes: 040036b ("scsi: qla2xxx: Delay loop id allocation at login") Cc: <stable@vger.kernel.org> # v4.17+ Signed-off-by: Chuck Anderson <chuck.anderson@oracle.com> Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
yh-raphael
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Aug 25, 2021
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To reproduce, mount NOVA fs on /mnt/ramdisk
Then run
and hit ctrl-C after a while. Try to unmount:
if fails, try
If fails, that's the bug.
This shows up on console:
[ 32.256504] Oops: 0010 [#1] SMP
[ 32.257489] Modules linked in: nova(OE) libcrc32c rfcomm bnep coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc aesni_intel vmw_balloon aes_x86_64 crypto_simd dax_pmem cryptd glue_helper intel_rapl_perf snd_ens1371 gameport snd_ac97_codec ac97_bus snd_pcm snd_seq_midi snd_seq_midi_event joydev input_leds uvcvideo dax serio_raw snd_rawmidi nd_pmem nd_btt videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core videodev snd_seq snd_timer snd_seq_device btusb btrtl media btbcm btintel bluetooth snd soundcore nfit vmw_vsock_vmci_transport vsock shpchp i2c_piix4 vmw_vmci mac_hid parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid hid psmouse vmwgfx drm_kms_helper ahci syscopyarea libahci sysfillrect e1000 sysimgblt fb_sys_fops ttm mptspi drm scsi_transport_spi
[ 32.279592] mptscsih pata_acpi mptbase fjes
[ 32.280914] CPU: 0 PID: 2746 Comm: loop0 Tainted: G OE 4.10.0-nova #8
[ 32.282976] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/02/2015
[ 32.285974] task: ffff995cc760da00 task.stack: ffffbca844b40000
[ 32.287649] RIP: 0010: (null)
[ 32.288838] RSP: 0018:ffffbca844b43d20 EFLAGS: 00010246
[ 32.290605] RAX: ffffffffc067ca80 RBX: ffff995cf3043fc0 RCX: 0000000000000001
[ 32.292616] RDX: ffff995cce468888 RSI: ffffbca844b43d68 RDI: ffff995cf3043fc0
[ 32.294925] RBP: ffffbca844b43dc0 R08: 0000000000001000 R09: ffff995cf3043f78
[ 32.297431] R10: 0000000000001000 R11: ffff995cce468888 R12: 0000000000000000
[ 32.300188] R13: 0000000000000000 R14: ffff995cce468888 R15: 0000000000000001
[ 32.302801] FS: 0000000000000000(0000) GS:ffff995cf9600000(0000) knlGS:0000000000000000
[ 32.305722] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 32.307547] CR2: 0000000000000000 CR3: 00000000add03000 CR4: 00000000003406f0
[ 32.309893] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 32.311959] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 32.314002] Call Trace:
[ 32.314736] ? lo_rw_aio+0x13c/0x290
[ 32.315726] ? update_curr+0xf3/0x170
[ 32.316810] loop_queue_work+0x938/0xac0
[ 32.317946] ? pick_next_task_fair+0x10d/0x4b0
[ 32.319171] ? __switch_to+0x23c/0x520
[ 32.320217] ? __schedule+0x230/0x6b0
[ 32.321295] kthread_worker_fn+0xf6/0x1c0
[ 32.322487] kthread+0x101/0x140
[ 32.323504] ? kthread_create_worker_on_cpu+0x70/0x70
[ 32.325156] ? kthread_create_on_node+0x60/0x60
[ 32.326747] ret_from_fork+0x2c/0x40
[ 32.327882] Code: Bad RIP value.
[ 32.328856] RIP: (null) RSP: ffffbca844b43d20
[ 32.330487] CR2: 0000000000000000
[ 32.331366] ---[ end trace c3c35d5ea58174ef ]---
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