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SubjectRe: crash due to "filelock: fix regression in unlock performance"
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On Wed, 2020-03-11 at 09:49 -0400, Qian Cai wrote:
> Reverted the linux-next commit 88a3248184e3 ("filelock: fix regression in unlock
> performance") fixed the issues when running LTP fcntl33 and fcntl36 tests.
>
> [ 360.431725][ T2087] BUG: KASAN: use-after-free in __break_lease+0x798/0xd40
> [ 360.466394][ T2087] Read of size 8 at addr ffff888fd0acc008 by task
> fcntl33/2087
> [ 360.501044][ T2087]
> [ 360.511400][ T2087] CPU: 31 PID: 2087 Comm: fcntl33 Not tainted 5.6.0-rc5-
> next-20200311+ #2
> [ 360.551011][ T2087] Hardware name: HP ProLiant BL660c Gen9, BIOS I38
> 10/17/2018
> [ 360.586335][ T2087] Call Trace:
> [ 360.601485][ T2087] dump_stack+0xa0/0xea
> [ 360.620290][ T2087] print_address_description.constprop.5.cold.7+0x9/0x384
> [ 360.653799][ T2087] __kasan_report.cold.8+0x7a/0xd0
> [ 360.677082][ T2087] ? __break_lease+0x798/0xd40
> [ 360.698169][ T2087] ? __break_lease+0x798/0xd40
> [ 360.720167][ T2087] kasan_report+0x4e/0x60
> [ 360.740468][ T2087] __asan_load8+0x86/0xb0
> [ 360.760469][ T2087] __break_lease+0x798/0xd40
> [ 360.780861][ T2087] ? locks_lock_inode_wait+0x2e0/0x2e0
> [ 360.806283][ T2087] ? finish_wait+0x110/0x110
> [ 360.827087][ T2087] vfs_truncate+0x218/0x2d0
> [ 360.848062][ T2087] ? do_truncate+0x160/0x160
> [ 360.868678][ T2087] do_sys_truncate.part.14+0xe7/0x100
> [ 360.893753][ T2087] ? vfs_truncate+0x2d0/0x2d0
> [ 360.916305][ T2087] ? __x64_sys_clock_gettime+0x151/0x1c0
> [ 360.943385][ T2087] ? __x64_sys_clock_settime+0x1d0/0x1d0
> [ 360.970662][ T2087] __x64_sys_truncate+0x36/0x50
> [ 360.993336][ T2087] do_syscall_64+0xcc/0xaec
> [ 361.014403][ T2087] ? syscall_return_slowpath+0x580/0x580
> [ 361.040377][ T2087] ? lockdep_hardirqs_off+0x1f/0x140
> [ 361.065174][ T2087] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe
> [ 361.092490][ T2087] ? trace_hardirqs_off_caller+0x3a/0x150
> [ 361.118190][ T2087] ? trace_hardirqs_off_thunk+0x1a/0x1c
> [ 361.142857][ T2087] entry_SYSCALL_64_after_hwframe+0x49/0xbe
> [ 361.170379][ T2087] RIP: 0033:0x7fce5325e29b
> [ 361.190363][ T2087] Code: 8b 15 f1 7b 2c 00 f7 d8 64 89 02 b8 ff ff ff ff c3
> 66 0f 1f 44 00 00 48 89 d6 e9 f0 fe ff ff f3 0f 1e fa b8 4c 00 00 00 0f 05 <48>
> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 8b 15 b9 7b 2c 00 f7 d8
> [ 361.282444][ T2087] RSP: 002b:00007ffcaffb4c38 EFLAGS: 00000202 ORIG_RAX:
> 000000000000004c
> [ 361.322255][ T2087] RAX: ffffffffffffffda RBX: 0000000000000003 RCX:
> 00007fce5325e29b
> [ 361.359334][ T2087] RDX: 00007fce5325f99d RSI: 0000000000000000 RDI:
> 00000000004130b9
> [ 361.396627][ T2087] RBP: 0000000000000003 R08: 000000000000000a R09:
> 0000000000000003
> [ 361.434859][ T2087] R10: 0000000000000000 R11: 0000000000000202 R12:
> 0000000000000003
> [ 361.474800][ T2087] R13: 0000000000000001 R14: 0000000000000000 R15:
> 0000000000000000
> [ 361.512852][ T2087]
> [ 361.523457][ T2087] Allocated by task 2083:
> [ 361.544036][ T2087] save_stack+0x21/0x50
> [ 361.562984][ T2087] __kasan_kmalloc.constprop.13+0xc1/0xd0
> [ 361.589410][ T2087] kasan_slab_alloc+0x11/0x20
> [ 361.610633][ T2087] kmem_cache_alloc+0x17a/0x450
> [ 361.632837][ T2087] locks_alloc_lock+0x1d/0xd0
> [ 361.654579][ T2087] lease_alloc+0x20/0x130
> [ 361.673887][ T2087] fcntl_setlease+0xaf/0x1e0
> [ 361.695199][ T2087] __x64_sys_fcntl+0x94a/0xb60
> [ 361.717155][ T2087] do_syscall_64+0xcc/0xaec
> [ 361.737644][ T2087] entry_SYSCALL_64_after_hwframe+0x49/0xbe
> [ 361.764729][ T2087]
> [ 361.775198][ T2087] Freed by task 2083:
> [ 361.794168][ T2087] save_stack+0x21/0x50
> [ 361.813911][ T2087] __kasan_slab_free+0x11c/0x170
> [ 361.837366][ T2087] kasan_slab_free+0xe/0x10
> [ 361.858468][ T2087] slab_free_freelist_hook+0x5f/0x1d0
> [ 361.882953][ T2087] kmem_cache_free+0x10c/0x3a0
> [ 361.905026][ T2087] locks_dispose_list+0xad/0xd0
> [ 361.927054][ T2087] generic_setlease+0x828/0xe30
> [ 361.951457][ T2087] vfs_setlease+0x8c/0xa0
> [ 361.973163][ T2087] fcntl_setlease+0x1ad/0x1e0
> [ 361.995721][ T2087] __x64_sys_fcntl+0x94a/0xb60
> [ 362.017353][ T2087] do_syscall_64+0xcc/0xaec
> [ 362.038223][ T2087] entry_SYSCALL_64_after_hwframe+0x49/0xbe
> [ 362.065559][ T2087]
> [ 362.075821][ T2087] The buggy address belongs to the object at
> ffff888fd0acc008
> [ 362.075821][ T2087] which belongs to the cache file_lock_cache of size 264
> [ 362.143451][ T2087] The buggy address is located 0 bytes inside of
> [ 362.143451][ T2087] 264-byte region [ffff888fd0acc008, ffff888fd0acc110)
> [ 362.205154][ T2087] The buggy address belongs to the page:
> [ 362.232197][ T2087] page:ffffea003f42b300 refcount:1 mapcount:0
> mapping:00000000e70f16de index:0x0
> [ 362.273879][ T2087] flags: 0x15fffe000000200(slab)
> [ 362.297515][ T2087] raw: 015fffe000000200 ffffea003f5ddf08 ffff889053bf8e20
> ffff88984f8c3400
> [ 362.338031][ T2087] raw: 0000000000000000 0000000000060006 00000001ffffffff
> 0000000000000000
> [ 362.378599][ T2087] page dumped because: kasan: bad access detected
> [ 362.407940][ T2087] page_owner tracks the page as allocated
> [ 362.434531][ T2087] page last allocated via order 0, migratetype Unmovable,
> gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY)
> [ 362.493982][ T2087] prep_new_page+0x2ed/0x310
> [ 362.515922][ T2087] get_page_from_freelist+0x2025/0x2e90
> [ 362.541322][ T2087] __alloc_pages_nodemask+0x2e4/0x700
> [ 362.566329][ T2087] alloc_pages_current+0x9c/0x110
> [ 362.589311][ T2087] alloc_slab_page+0x357/0x530
> [ 362.611363][ T2087] allocate_slab+0x70/0x5d0
> [ 362.632301][ T2087] new_slab+0x46/0x70
> [ 362.650612][ T2087] ___slab_alloc+0x4ab/0x7b0
> [ 362.671494][ T2087] __slab_alloc+0x43/0x70
> [ 362.691555][ T2087] kmem_cache_alloc+0x2dd/0x450
> [ 362.713932][ T2087] locks_alloc_lock+0x1d/0xd0
> [ 362.735704][ T2087] lease_alloc+0x20/0x130
> [ 362.755482][ T2087] fcntl_setlease+0xaf/0x1e0
> [ 362.776381][ T2087] __x64_sys_fcntl+0x94a/0xb60
> [ 362.798513][ T2087] do_syscall_64+0xcc/0xaec
> [ 362.818924][ T2087] entry_SYSCALL_64_after_hwframe+0x49/0xbe
> [ 362.846972][ T2087] page last free stack trace:
> [ 362.868599][ T2087] free_pcp_prepare+0x4bb/0x4e0
> [ 362.890769][ T2087] free_unref_page+0x2c/0x90
> [ 362.911891][ T2087] __free_pages+0x82/0xd0
> [ 362.931594][ T2087] __free_slab+0x38b/0x550
> [ 362.951740][ T2087] discard_slab+0x41/0x80
> [ 362.971974][ T2087] __slab_free+0x4cc/0x540
> [ 362.993900][ T2087] ___cache_free+0xc3/0x120
> [ 363.016145][ T2087] qlist_free_all+0x44/0xa0
> [ 363.037009][ T2087] quarantine_reduce+0x1b0/0x240
> [ 363.059732][ T2087] __kasan_kmalloc.constprop.13+0x98/0xd0
> [ 363.086580][ T2087] kasan_slab_alloc+0x11/0x20
> [ 363.107991][ T2087] __kmalloc+0x154/0x420
> [ 363.128161][ T2087] kmem_alloc+0xed/0x2e0 [xfs]
> [ 363.150357][ T2087] xlog_cil_push+0xe2/0x8f0 [xfs]
> [ 363.173591][ T2087] xlog_cil_push_work+0x25/0x30 [xfs]
> [ 363.198960][ T2087] process_one_work+0x576/0xb90
> [ 363.221388][ T2087]
> [ 363.231583][ T2087] Memory state around the buggy address:
> [ 363.258150][ T2087] ffff888fd0acbf00: 00 00 00 00 00 00 00 00 00 00 00 00 00
> 00 00 00
> [ 363.295743][ T2087] ffff888fd0acbf80: 00 00 00 00 00 00 00 00 00 00 00 00 00
> 00 00 00
> [ 363.333798][ T2087] >ffff888fd0acc000: fc fb fb fb fb fb fb fb fb fb fb fb fb
> fb fb fb
> [ 363.371567][ T2087] ^
> [ 363.391401][ T2087] ffff888fd0acc080: fb fb fb fb fb fb fb fb fb fb fb fb fb
> fb fb fb
> [ 363.428824][ T2087] ffff888fd0acc100: fb fb fc fc fc fc fc fc fc fc fc fc fc
> fc fc fc
> [ 363.466684][ T2087]
> ==================================================================
>
> [ 645.191439][ T2701] kernel BUG at fs/locks.c:359!
> [ 645.191451][ T2701] invalid opcode: 0000 [#1] SMP DEBUG_PAGEALLOC KASAN PTI
> [ 645.191459][ T2701] CPU: 21 PID: 2701 Comm: fcntl36 Tainted:
> G B 5.6.0-rc5-next-20200311+ #2
> [ 645.191462][ T2701] Hardware name: HP ProLiant BL660c Gen9, BIOS I38
> 10/17/2018
> [ 645.191478][ T2701] RIP: 0010:locks_release_private+0x167/0x1a0
> [ 645.191484][ T2701] Code: 00 00 00 00 00 5b 41 5c 41 5d 41 5e 5d c3 0f 0b 48
> c7 c7 60 77 22 8b e8 89 17 11 00 0f 0b 48 c7 c7 20 77 22 8b e8 7b 17 11 00 <0f>
> 0b 48 c7 c7 e0 76 22 8b e8 6d 17 11 00 0f 0b 48 c7 c7 a0 76 22
> [ 645.191487][ T2701] RSP: 0018:ffffc9000f3afc48 EFLAGS: 00010206
> [ 645.191493][ T2701] RAX: ffff889ef8b909e0 RBX: ffff889f4f3dc9a8 RCX:
> ffffffff89d5a9e7
> [ 645.191496][ T2701] RDX: dffffc0000000000 RSI: dffffc0000000000 RDI:
> ffff889f4f3dc9d0
> [ 645.191500][ T2701] RBP: ffffc9000f3afc68 R08: fffffbfff16a631d R09:
> fffffbfff16a631d
> [ 645.191503][ T2701] R10: ffffffff8b5318e7 R11: fffffbfff16a631c R12:
> ffff889f4f3dc9d0
> [ 645.191507][ T2701] R13: 0000000000000000 R14: ffff889f3e808740 R15:
> 0000000000000007
> [ 645.191511][ T2701] FS: 00007fa1c7e8b700(0000) GS:ffff88a02bb80000(0000)
> knlGS:0000000000000000
> [ 645.191514][ T2701] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 645.191517][ T2701] CR2: 00007fa1c7e89e98 CR3: 0000000fc64d8001 CR4:
> 00000000001606e0
> [ 645.191519][ T2701] Call Trace:
> [ 645.191525][ T2701] fcntl_setlk+0x208/0x670
> [ 645.191531][ T2701] ? fcntl_getlk+0x300/0x300
> [ 645.191541][ T2701] ? __kasan_check_write+0x14/0x20
> [ 645.191550][ T2701] __x64_sys_fcntl+0x707/0xb60
> [ 645.191555][ T2701] ? f_getown+0x70/0x70
> [ 645.191565][ T2701] ? lock_repin_lock+0x210/0x210
> [ 645.191575][ T2701] ? schedule+0xc9/0x160
> [ 645.191580][ T2701] ? lockdep_hardirqs_on+0x16/0x2a0
> [ 645.191586][ T2701] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe
> [ 645.191594][ T2701] do_syscall_64+0xcc/0xaec
> [ 645.191599][ T2701] ? syscall_return_slowpath+0x580/0x580
> [ 645.191604][ T2701] ? lockdep_hardirqs_off+0x1f/0x140
> [ 645.191608][ T2701] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe
> [ 645.191615][ T2701] ? trace_hardirqs_off_caller+0x3a/0x150
> [ 645.191619][ T2701] ? trace_hardirqs_off_thunk+0x1a/0x1c
> [ 645.191625][ T2701] entry_SYSCALL_64_after_hwframe+0x49/0xbe
> [ 645.191629][ T2701] RIP: 0033:0x7fa1c9f7d2f7
> [ 645.191634][ T2701] Code: 00 00 00 89 74 24 0c 89 7c 24 08 48 89 14 24 e8 7f
> c5 01 00 48 8b 14 24 8b 74 24 0c 41 89 c0 8b 7c 24 08 b8 48 00 00 00 0f 05 <48>
> 3d 00 f0 ff ff 77 13 44 89 c7 89 04 24 e8 b6 c5 01 00 8b 04 24
> [ 645.191636][ T2701] RSP: 002b:00007fa1c7e89dd0 EFLAGS: 00000293 ORIG_RAX:
> 0000000000000048
> [ 645.191641][ T2701] RAX: ffffffffffffffda RBX: 000000000000000b RCX:
> 00007fa1c9f7d2f7
> [ 645.191644][ T2701] RDX: 00007fa1c7e8aea0 RSI: 0000000000000007 RDI:
> 000000000000000b
> [ 645.191648][ T2701] RBP: 00007fa1c7e8aef0 R08: 0000000000000000 R09:
> 00007fa1c7e89ea0
> [ 645.191650][ T2701] R10: 0000000000000000 R11: 0000000000000293 R12:
> 000000000000000a
> [ 645.191654][ T2701] R13: 00007ffcc4f29f10 R14: 0000000000002800 R15:
> 00007fa1c7e89ea0
> [ 645.191658][ T2701] Modules linked in: kvm_intel kvm irqbypass intel_cstate
> intel_uncore intel_rapl_perf dax_pmem efivars dax_pmem_core nls_iso8859_1
> nls_cp437 vfat fat ip_tables x_tables xfs sd_mod bnx2x hpsa scsi_transport_sas
> mdio firmware_class dm_mirror dm_region_hash dm_log dm_mod efivarfs
> [ 645.191769][ T2701] ---[ end trace 1c9d450d36050f6d ]---
> [ 645.191776][ T2701] RIP: 0010:locks_release_private+0x167/0x1a0
> [ 645.191781][ T2701] Code: 00 00 00 00 00 5b 41 5c 41 5d 41 5e 5d c3 0f 0b 48
> c7 c7 60 77 22 8b e8 89 17 11 00 0f 0b 48 c7 c7 20 77 22 8b e8 7b 17 11 00 <0f>
> 0b 48 c7 c7 e0 76 22 8b e8 6d 17 11 00 0f 0b 48 c7 c7 a0 76 22
> [ 645.191783][ T2701] RSP: 0018:ffffc9000f3afc48 EFLAGS: 00010206
> [ 645.191788][ T2701] RAX: ffff889ef8b909e0 RBX: ffff889f4f3dc9a8 RCX:
> ffffffff89d5a9e7
> [ 645.191792][ T2701] RDX: dffffc0000000000 RSI: dffffc0000000000 RDI:
> ffff889f4f3dc9d0
> [ 645.191795][ T2701] RBP: ffffc9000f3afc68 R08: fffffbfff16a631d R09:
> fffffbfff16a631d
> [ 645.191798][ T2701] R10: ffffffff8b5318e7 R11: fffffbfff16a631c R12:
> ffff889f4f3dc9d0
> [ 645.191801][ T2701] R13: 0000000000000000 R14: ffff889f3e808740 R15:
> 0000000000000007
> [ 645.191805][ T2701] FS: 00007fa1c7e8b700(0000) GS:ffff88a02bb80000(0000)
> knlGS:0000000000000000
> [ 645.191809][ T2701] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ 645.191812][ T2701] CR2: 00007fa1c7e89e98 CR3: 0000000fc64d8001 CR4:
> 00000000001606e0
> [ 645.191815][ T2701] Kernel panic - not syncing: Fatal exception
> [ 645.216416][ T2698] kernel BUG at fs/locks.c:359!
> [ 646.250771][ T2701] Shutting down cpus with NMI
> [ 646.256823][ T2695] kernel BUG at fs/locks.c:359!
> [ 646.279307][ T2701] Kernel Offset: 0x8800000 from 0xffffffff81000000
> (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
> [ 647.362932][ T2701] ---[ end Kernel panic - not syncing: Fatal exception ]---
>
>
>
>
>
> [ 1650.986440][T13230] LTP: starting fcntl33
> [ 1650.998106][T28398] ------------[ cut here ]------------
> [ 1650.998140][T28398] WARNING: CPU: 71 PID: 28398 at fs/locks.c:1667
> __break_lease+0xe1c/0x10d0
> [ 1650.998154][T28398] Modules linked in: brd ext4 crc16 mbcache jbd2 loop
> ip_tables x_tables xfs sd_mod bnx2x tg3 mdio ahci libahci libphy firmware_class
> libata dm_mirror dm_region_hash dm_log dm_mod
> [ 1650.998200][T28398] CPU: 71 PID: 28398 Comm: fcntl33 Not tainted 5.6.0-rc5-
> next-20200311+ #4
> [ 1650.998225][T28398] NIP: c00000000058dc1c LR: c00000000058d540 CTR:
> c00000000016fb60
> [ 1650.998238][T28398] REGS: c00020020e60f700 TRAP: 0700 Not tainted (5.6.0-
> rc5-next-20200311+)
> [ 1650.998271][T28398] MSR: 900000000282b033
> <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE> CR: 44024274 XER: 00000000
> [ 1650.998323][T28398] CFAR: c00000000058d554 IRQMASK: 0
> [ 1650.998323][T28398] GPR00: c00000000058d540 c00020020e60f990 c000000001659600
> 0000000000000000
> [ 1650.998323][T28398] GPR04: c00020182a5c6728 0000000000000000 0000000000000000
> 0000000000000047
> [ 1650.998323][T28398] GPR08: 0000000000000010 6b6b6b6b6b6b6b6b c000200789ceaa80
> 0000000000000007
> [ 1650.998323][T28398] GPR12: 0000000000004000 c000201fff7f5c00 c00020182a5ccbf0
> 0000000000000001
> [ 1650.998323][T28398] GPR16: c00000000058b140 c000000000b3bb00 c00020182a5c6788
> c000000000b085e0
> [ 1650.998323][T28398] GPR20: c00000000158e068 c00000000168b5d4 c00000000168b328
> c0000000015f97e0
> [ 1650.998323][T28398] GPR24: c0000000004b47ec c00020182a5ccbf8 c0002013001ae830
> c00020020e60fa10
> [ 1650.998323][T28398] GPR28: c00020042b86d000 c00000000158df50 0000000000000000
> c00020182a5c6728
> [ 1650.998545][T28398] NIP [c00000000058dc1c] __break_lease+0xe1c/0x10d0
> [ 1650.998577][T28398] LR [c00000000058d540] __break_lease+0x740/0x10d0
> [ 1650.998598][T28398] Call Trace:
> [ 1650.998616][T28398] [c00020020e60f990] [c00000000058d540]
> __break_lease+0x740/0x10d0 (unreliable)
> [ 1650.998653][T28398] [c00020020e60fae0] [c0000000004b47ec]
> do_dentry_open+0x21c/0x4f0
> [ 1650.998678][T28398] [c00020020e60fb30] [c0000000004d657c]
> path_openat+0x5bc/0xaa0
> [ 1650.998701][T28398] [c00020020e60fc10] [c0000000004d816c]
> do_filp_open+0x8c/0x120
> [ 1650.998735][T28398] [c00020020e60fd40] [c0000000004b51c8]
> do_sys_openat2+0x2c8/0x3c0
> [ 1650.998769][T28398] [c00020020e60fdc0] [c0000000004b6f2c]
> do_sys_open+0x6c/0xc0
> [ 1650.998815][T28398] [c00020020e60fe20] [c00000000000b378]
> system_call+0x5c/0x68
> [ 1650.998849][T28398] Instruction dump:
> [ 1650.998868][T28398] 60000000 7c0004ac e90d0028 3d22fff3 e9294a08 387d00c0
> 7d49402e 394affff
> [ 1650.998905][T28398] 7d49412e 4bb810e9 60000000 4bfff9c4 <0fe00000> 4bfff938
> 0fe00000 4bfffd2c
> [ 1650.998932][T28398] irq event stamp: 0
> [ 1650.998940][T28398] hardirqs last enabled at (0): [<0000000000000000>] 0x0
> [ 1650.998953][T28398] hardirqs last disabled at (0): [<c0000000001032b8>]
> copy_process+0x6e8/0x1900
> [ 1650.998989][T28398] softirqs last enabled at (0): [<c0000000001032b8>]
> copy_process+0x6e8/0x1900
> [ 1650.999023][T28398] softirqs last disabled at (0): [<0000000000000000>] 0x0
> [ 1650.999056][T28398] ---[ end trace 7fba05e648f90a7d ]---
>
> [ 1651.863071][T13230] LTP: starting fcntl36
> [ 1657.143774][T28976] ------------[ cut here ]------------
> [ 1657.143807][T28976] kernel BUG at fs/locks.c:359!
> [ 1657.143819][T28976] Oops: Exception in kernel mode, sig: 5 [#1]
> [ 1657.143843][T28976] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=256
> DEBUG_PAGEALLOC NUMA PowerNV
> [ 1657.143858][T28976] Modules linked in: brd ext4 crc16 mbcache jbd2 loop
> ip_tables x_tables xfs sd_mod bnx2x tg3 mdio ahci libahci libphy firmware_class
> libata dm_mirror dm_region_hash dm_log dm_mod
> [ 1657.143923][T28976] CPU: 108 PID: 28976 Comm: fcntl36 Tainted:
> G W 5.6.0-rc5-next-20200311+ #4
> [ 1657.143954][T28976] NIP: c000000000588808 LR: c000000000591a88 CTR:
> 0000000000000000
> [ 1657.143981][T28976] REGS: c0002003d19cf9e0 TRAP: 0700 Tainted:
> G W (5.6.0-rc5-next-20200311+)
> [ 1657.144008][T28976] MSR: 900000000282b033
> <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE> CR: 44004884 XER: 20040000
> [ 1657.144018][T28973] ------------[ cut here ]------------
> [ 1657.144040][T28976] CFAR: c000000000591a84 IRQMASK: 0
> [ 1657.144040][T28976] GPR00: c000000000591a88 c0002003d19cfc70 c000000001659600
> c0002011d2f44b08
> [ 1657.144040][T28976] GPR04: c00000000168b330 0000000000000000 0000000000000000
> 000000000000006c
> [ 1657.144040][T28976] GPR08: c000200d0b869fa0 0000000000000001 0000000000000001
> 0000000000000000
> [ 1657.144040][T28976] GPR12: 0000000000004000 c000201fff677680 00007fffacb10000
> 00007fffab820000
> [ 1657.144040][T28976] GPR16: 00007fffaca94410 00007fffaca94420 00007ffff6544868
> 000000001001d098
> [ 1657.144040][T28976] GPR20: 000000001001d088 000000001001d060 0000000010040560
> 0000000000000001
> [ 1657.144040][T28976] GPR24: 0000000000000002 0000000000000058 c0002013001ae830
> c00000000168b5d4
> [ 1657.144040][T28976] GPR28: 0000000000000000 c00000000168b328 0000000000000008
> c0002011d2f44b08
> [ 1657.144077][T28973] kernel BUG at fs/locks.c:359!
> [ 1657.144436][T28976] NIP [c000000000588808] locks_release_private+0x58/0x120
> [ 1657.144463][T28979] ------------[ cut here ]------------
> [ 1657.144483][T28976] LR [c000000000591a88] fcntl_setlk+0x158/0x600
> [ 1657.144486][T28976] Call Trace:
> [ 1657.144513][T28979] kernel BUG at fs/locks.c:359!
> [ 1657.144538][T28976] [c0002003d19cfc70] [c0000000009a9950]
> _raw_spin_unlock+0x30/0x70 (unreliable)
> [ 1657.144631][T28976] [c0002003d19cfca0] [c000000000591c18]
> fcntl_setlk+0x2e8/0x600
> [ 1657.144682][T28976] [c0002003d19cfd40] [c0000000004da940]
> do_fcntl+0x650/0xa80
> [ 1657.144731][T28976] [c0002003d19cfdd0] [c0000000004db1c8]
> sys_fcntl+0x78/0x110
> [ 1657.144770][T28976] [c0002003d19cfe20] [c00000000000b378]
> system_call+0x5c/0x68
> [ 1657.144794][T28976] Instruction dump:
> [ 1657.144804][T28976] 7fa94000 7d20579e 0b090000 7c691b78 e9090009 7fa94000
> 7d20579e 0b090000
> [ 1657.144845][T28976] e9030028 39230028 7fa94000 7d20579e <0b090000> e9030038
> 39230038 7fa94000
> [ 1657.144899][T28976] ---[ end trace 7fba05e648f90a7e ]---
>
>
> [ 1657.300559][T28973] Oops: Exception in kernel mode, sig: 5 [#2]
> [ 1657.300596][T28973] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=256
> DEBUG_PAGEALLOC NUMA PowerNV
> [ 1657.300632][T28973] Modules linked in: brd ext4 crc16 mbcache jbd2 loop
> ip_tables x_tables xfs sd_mod bnx2x tg3 mdio ahci libahci libphy firmware_class
> libata dm_mirror dm_region_hash dm_log dm_mod
> [ 1657.300732][T28973] CPU: 88 PID: 28973 Comm: fcntl36 Tainted: G D
> W 5.6.0-rc5-next-20200311+ #4
> [ 1657.300792][T28973] NIP: c000000000588808 LR: c000000000591a88 CTR:
> 0000000000000000
> [ 1657.300826][T28973] REGS: c000201aaaa8f9e0 TRAP: 0700 Tainted: G D
> W (5.6.0-rc5-next-20200311+)
> [ 1657.300953][T28973] MSR: 900000000282b033
> <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE> CR: 44004808 XER: 20040000
> [ 1657.301065][T28973] CFAR: c000000000591a84 IRQMASK: 0
> [ 1657.301065][T28973] GPR00: c000000000591a88 c000201aaaa8fc70 c000000001659600
> c000200d0b8693b0
> [ 1657.301065][T28973] GPR04: c00000000168b330 0000000000000000 0000000000000000
> 0000000000000058
> [ 1657.301065][T28973] GPR08: c000201835d26508 0000000000000001 0000000000000001
> 0000000000000000
> [ 1657.301065][T28973] GPR12: 0000000000004000 c000201fff697700 0000000045fc7188
> 00007fff7d260000
> [ 1657.301065][T28973] GPR16: 00007fffaca94410 00007fffaca94420 00007ffff6544850
> 000000001001d098
> [ 1657.301065][T28973] GPR20: 000000001001d088 000000001001d060 0000000010040560
> 0000000000000001
> [ 1657.301065][T28973] GPR24: 0000000000000002 0000000000000040 c0002013001ae830
> c00000000168b5d4
> [ 1657.301065][T28973] GPR28: 0000000000000000 c00000000168b328 0000000000000008
> c000200d0b8693b0
> [ 1657.301632][T28973] NIP [c000000000588808] locks_release_private+0x58/0x120
> [ 1657.301678][T28973] LR [c000000000591a88] fcntl_setlk+0x158/0x600
> [ 1657.301740][T28973] Call Trace:
> [ 1657.301820][T28973] [c000201aaaa8fc70] [c0000000009a9950]
> _raw_spin_unlock+0x30/0x70 (unreliable)
> [ 1657.301930][T28973] [c000201aaaa8fca0] [c000000000591c18]
> fcntl_setlk+0x2e8/0x600
> [ 1657.302040][T28973] [c000201aaaa8fd40] [c0000000004da940]
> do_fcntl+0x650/0xa80
> [ 1657.302102][T28973] [c000201aaaa8fdd0] [c0000000004db1c8]
> sys_fcntl+0x78/0x110
> [ 1657.302185][T28973] [c000201aaaa8fe20] [c00000000000b378]
> system_call+0x5c/0x68
> [ 1657.302265][T28973] Instruction dump:
> [ 1657.302340][T28973] 7fa94000 7d20579e 0b090000 7c691b78 e9090009 7fa94000
> 7d20579e 0b090000
> [ 1657.302418][T28973] e9030028 39230028 7fa94000 7d20579e <0b090000> e9030038
> 39230038 7fa94000
> [ 1657.302509][T28973] ---[ end trace 7fba05e648f90a7f ]---
> [ 1657.774513][T28973]
> [ 1657.774573][T29054] Oops: Exception in kernel mode, sig: 5 [#3]
> [ 1657.774607][T29054] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=256
> DEBUG_PAGEALLOC NUMA PowerNV
> [ 1657.774627][T29054] Modules linked in: brd ext4 crc16 mbcache jbd2 loop
> ip_tables x_tables xfs sd_mod bnx2x tg3 mdio ahci libahci libphy firmware_class
> libata dm_mirror dm_region_hash dm_log dm_mod
> [ 1657.774690][T29054] CPU: 127 PID: 29054 Comm: fcntl36 Tainted: G D
> W 5.6.0-rc5-next-20200311+ #4
> [ 1657.774733][T29054] NIP: c000000000588808 LR: c000000000591a88 CTR:
> 0000000000000000
> [ 1657.774773][T29054] REGS: c00020146166f9e0 TRAP: 0700 Tainted: G D
> W (5.6.0-rc5-next-20200311+)
> [ 1657.774814][T29054] MSR: 900000000282b033
> <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE> CR: 44004888 XER: 20040000
> [ 1657.774864][T29054] CFAR: c000000000591a84 IRQMASK: 0
> [ 1657.774864][T29054] GPR00: c000000000591a88 c00020146166fc70 c000000001659600
> c0002011d2f4ab20
> [ 1657.774864][T29054] GPR04: c00000000168b330 0000000000000000 0000000000000000
> 000000000000007f
> [ 1657.774864][T29054] GPR08: c0002018358610a8 0000000000000001 0000000000000001
> 0000000000000000
> [ 1657.774864][T29054] GPR12: 0000000000004000 c000201fff668900 00007fffacb10000
> 00007fff84340000
> [ 1657.774864][T29054] GPR16: 00007fffaca94410 00007fffaca94420 00007ffff6544ad8
> 000000001001d098
> [ 1657.774864][T29054] GPR20: 000000001001d088 000000001001d060 0000000010040560
> 0000000000000001
> [ 1657.774864][T29054] GPR24: 0000000000000002 00000000000002c8 c0002013001ae830
> c00000000168b5d4
> [ 1657.774864][T29054] GPR28: 0000000000000000 c00000000168b328 0000000000000008
> c0002011d2f4ab20
> [ 1657.775161][T29054] NIP [c000000000588808] locks_release_private+0x58/0x120
> [ 1657.775187][T29054] LR [c000000000591a88] fcntl_setlk+0x158/0x600
> [ 1657.775212][T29054] Call Trace:
> [ 1657.775238][T29054] [c00020146166fc70] [c0000000009a9950]
> _raw_spin_unlock+0x30/0x70 (unreliable)
> [ 1657.775280][T29054] [c00020146166fca0] [c000000000591c18]
> fcntl_setlk+0x2e8/0x600
> [ 1657.775331][T29054] [c00020146166fd40] [c0000000004da940]
> do_fcntl+0x650/0xa80
> [ 1657.775371][T29054] [c00020146166fdd0] [c0000000004db1c8]
> sys_fcntl+0x78/0x110
> [ 1657.775412][T29054] [c00020146166fe20] [c00000000000b378]
> system_call+0x5c/0x68
> [ 1657.775450][T29054] Instruction dump:
> [ 1657.775475][T29054] 7fa94000 7d20579e 0b090000 7c691b78 e9090009 7fa94000
> 7d20579e 0b090000
> [ 1657.775520][T29054] e9030028 39230028 7fa94000 7d20579e <0b090000> e9030038
> 39230038 7fa94000
> [ 1657.775578][T29054] ---[ end trace 7fba05e648f90a80 ]---
> [ 1657.878207][T29054]
> [ 1657.878232][T29036] Oops: Exception in kernel mode, sig: 5 [#4]
> [ 1657.878249][T29036] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=256
> DEBUG_PAGEALLOC NUMA PowerNV
> [ 1657.878268][T29036] Modules linked in: brd ext4 crc16 mbcache jbd2 loop
> ip_tables x_tables xfs sd_mod bnx2x tg3 mdio ahci libahci libphy firmware_class
> libata dm_mirror dm_region_hash dm_log dm_mod
> [ 1657.878436][T29036] CPU: 121 PID: 29036 Comm: fcntl36 Tainted: G D
> W 5.6.0-rc5-next-20200311+ #4
> [ 1657.878573][T29036] NIP: c000000000588808 LR: c000000000591a88 CTR:
> 0000000000000000
> [ 1657.878693][T29036] REGS: c0002016e558f9e0 TRAP: 0700 Tainted: G D
> W (5.6.0-rc5-next-20200311+)
> [ 1657.878810][T29036] MSR: 900000000282b033
> <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE> CR: 44004804 XER: 20040000
> [ 1657.878998][T29036] CFAR: c000000000591a84 IRQMASK: 0
> [ 1657.878998][T29036] GPR00: c000000000591a88 c0002016e558fc70 c000000001659600
> c000201835d2e108
> [ 1657.878998][T29036] GPR04: c00000000168b330 0000000000000000 0000000000000000
> 0000000000000079
> [ 1657.878998][T29036] GPR08: c00020028cb469b8 0000000000000001 0000000000000001
> 0000000000000000
> [ 1657.878998][T29036] GPR12: 0000000000004000 c000201fff66d400 00007fffacb10000
> 00007fff8d460000
> [ 1657.878998][T29036] GPR16: 00007fffaca94410 00007fffaca94420 00007ffff6544a48
> 000000001001d098
> [ 1657.878998][T29036] GPR20: 000000001001d088 000000001001d060 0000000010040560
> 0000000000000001
> [ 1657.878998][T29036] GPR24: 0000000000000002 0000000000000238 c0002013001ae830
> c00000000168b5d4
> [ 1657.878998][T29036] GPR28: 0000000000000000 c00000000168b328 0000000000000008
> c000201835d2e108
> [ 1657.879976][T29036] NIP [c000000000588808] locks_release_private+0x58/0x120
> [ 1657.880054][T29036] LR [c000000000591a88] fcntl_setlk+0x158/0x600
> [ 1657.880125][T29036] Call Trace:
> [ 1657.880163][T29036] [c0002016e558fc70] [c0000000009a9950]
> _raw_spin_unlock+0x30/0x70 (unreliable)
> [ 1657.880277][T29036] [c0002016e558fca0] [c000000000591c18]
> fcntl_setlk+0x2e8/0x600
> [ 1657.880387][T29036] [c0002016e558fd40] [c0000000004da940]
> do_fcntl+0x650/0xa80
> [ 1657.880468][T29036] [c0002016e558fdd0] [c0000000004db1c8]
> sys_fcntl+0x78/0x110
> [ 1657.880550][T29036] [c0002016e558fe20] [c00000000000b378]
> system_call+0x5c/0x68
> [ 1657.880637][T29036] Instruction dump:
> [ 1657.880678][T29036] 7fa94000 7d20579e 0b090000 7c691b78 e9090009 7fa94000
> 7d20579e 0b090000
> [ 1657.880792][T29036] e9030028 39230028 7fa94000 7d20579e <0b090000> e9030038
> 39230038 7fa94000
> [ 1657.880954][T29036] ---[ end trace 7fba05e648f90a81 ]---
> [ 1657.985193][T29036]
> [ 1657.985226][T29051] Oops: Exception in kernel mode, sig: 5 [#5]
> [ 1657.985263][T29051] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=256
> DEBUG_PAGEALLOC NUMA PowerNV
> [ 1657.985304][T29051] Modules linked in: brd ext4 crc16 mbcache jbd2 loop
> ip_tables x_tables xfs sd_mod bnx2x tg3 mdio ahci libahci libphy firmware_class
> libata dm_mirror dm_region_hash dm_log dm_mod
> [ 1657.985589][T29051] CPU: 75 PID: 29051 Comm: fcntl36 Tainted: G D
> W 5.6.0-rc5-next-20200311+ #4
> [ 1657.985707][T29051] NIP: c000000000588808 LR: c000000000591a88 CTR:
> 0000000000000000
> [ 1657.985827][T29051] REGS: c0002016e550f9e0 TRAP: 0700 Tainted: G D
> W (5.6.0-rc5-next-20200311+)
> [ 1657.985953][T29051] MSR: 900000000282b033
> <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE> CR: 44004804 XER: 20040000
> [ 1657.986133][T29051] CFAR: c000000000591a84 IRQMASK: 0
> [ 1657.986133][T29051] GPR00: c000000000591a88 c0002016e550fc70 c000000001659600
> c000201c15980260
> [ 1657.986133][T29051] GPR04: c00000000168b330 0000000000000000 0000000000000000
> 000000000000004b
> [ 1657.986133][T29051] GPR08: c0002018358641e0 0000000000000001 0000000000000001
> 0000000000000000
> [ 1657.986133][T29051] GPR12: 0000000000004000 c000201fff7f2a00 00007fffacb10000
> 00007fff85b70000
> [ 1657.986133][T29051] GPR16: 00007fffaca94410 00007fffaca94420 00007ffff6544ac0
> 000000001001d098
> [ 1657.986133][T29051] GPR20: 000000001001d088 000000001001d060 0000000010040560
> 0000000000000001
> [ 1657.986133][T29051] GPR24: 0000000000000002 00000000000002b0 c0002013001ae830
> c00000000168b5d4
> [ 1657.986133][T29051] GPR28: 0000000000000000 c00000000168b328 0000000000000008
> c000201c15980260
> [ 1657.987072][T29051] NIP [c000000000588808] locks_release_private+0x58/0x120
> [ 1657.987253][T29051] LR [c000000000591a88] fcntl_setlk+0x158/0x600
> [ 1657.987344][T29051] Call Trace:
> [ 1657.987385][T29051] [c0002016e550fc70] [c0000000009a9950]
> _raw_spin_unlock+0x30/0x70 (unreliable)
> [ 1657.987514][T29051] [c0002016e550fca0] [c000000000591c18]
> fcntl_setlk+0x2e8/0x600
> [ 1657.987620][T29051] [c0002016e550fd40] [c0000000004da940]
> do_fcntl+0x650/0xa80
> [ 1657.987715][T29051] [c0002016e550fdd0] [c0000000004db1c8]
> sys_fcntl+0x78/0x110
> [ 1657.987828][T29051] [c0002016e550fe20] [c00000000000b378]
> system_call+0x5c/0x68
> [ 1657.987915][T29051] Instruction dump:
> [ 1657.987960][T29051] 7fa94000 7d20579e 0b090000 7c691b78 e9090009 7fa94000
> 7d20579e 0b090000
> [ 1657.988090][T29051] e9030028 39230028 7fa94000 7d20579e <0b090000> e9030038
> 39230038 7fa94000
> [ 1657.988209][T29051] ---[ end trace 7fba05e648f90a82 ]---
> [ 1658.093951][T29051]
> [ 1658.093981][T29006] Oops: Exception in kernel mode, sig: 5 [#6]
> [ 1658.094025][T29006] LE PAGE_SIZE=64K MMU=Radix SMP NR_CPUS=256
> DEBUG_PAGEALLOC NUMA PowerNV
> [ 1658.094087][T29006] Modules linked in: brd ext4 crc16 mbcache jbd2 loop
> ip_tables x_tables xfs sd_mod bnx2x tg3 mdio ahci libahci libphy firmware_class
> libata dm_mirror dm_region_hash dm_log dm_mod
> [ 1658.094394][T29006] CPU: 82 PID: 29006 Comm: fcntl36 Tainted: G D
> W 5.6.0-rc5-next-20200311+ #4
> [ 1658.094590][T29006] NIP: c000000000588808 LR: c000000000591a88 CTR:
> 0000000000000000
> [ 1658.094684][T29006] REGS: c0002007f0a0f9e0 TRAP: 0700 Tainted: G D
> W (5.6.0-rc5-next-20200311+)
> [ 1658.094820][T29006] MSR: 900000000282b033
> <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI,LE> CR: 44004808 XER: 20040000
> [ 1658.095017][T29006] CFAR: c000000000591a84 IRQMASK: 0
> [ 1658.095017][T29006] GPR00: c000000000591a88 c0002007f0a0fc70 c000000001659600
> c000200153127538
> [ 1658.095017][T29006] GPR04: c00000000168b330 0000000000000000 0000000000000000
> 0000000000000052
> [ 1658.095017][T29006] GPR08: c0002009200a9898 0000000000000001 0000000000000001
> 0000000000000000
> [ 1658.095017][T29006] GPR12: 0000000000004000 c000201fff69c200 00007fffacb10000
> 00007fff9c640000
> [ 1658.095017][T29006] GPR16: 00007fffaca94410 00007fffaca94420 00007ffff6544958
> 000000001001d098
> [ 1658.095017][T29006] GPR20: 000000001001d088 000000001001d060 0000000010040560
> 0000000000000001
> [ 1658.095017][T29006] GPR24: 0000000000000002 0000000000000148 c0002013001ae830
> c00000000168b5d4
> [ 1658.095017][T29006] GPR28: 0000000000000000 c00000000168b328 0000000000000008
> c000200153127538
> [ 1658.096113][T29006] NIP [c000000000588808] locks_release_private+0x58/0x120
> [ 1658.096263][T29006] LR [c000000000591a88] fcntl_setlk+0x158/0x600
> [ 1658.096366][T29006] Call Trace:
> [ 1658.096417][T29006] [c0002007f0a0fc70] [c0000000009a9950]
> _raw_spin_unlock+0x30/0x70 (unreliable)
> [ 1658.096573][T29006] [c0002007f0a0fca0] [c000000000591c18]
> fcntl_setlk+0x2e8/0x600
> [ 1658.096678][T29006] [c0002007f0a0fd40] [c0000000004da940]
> do_fcntl+0x650/0xa80
> [ 1658.096768][T29006] [c0002007f0a0fdd0] [c0000000004db1c8]
> sys_fcntl+0x78/0x110
> [ 1658.096880][T29006] [c0002007f0a0fe20] [c00000000000b378]
> system_call+0x5c/0x68
> [ 1658.096998][T29006] Instruction dump:
> [ 1658.097049][T29006] 7fa94000 7d20579e 0b090000 7c691b78 e9090009 7fa94000
> 7d20579e 0b090000
> [ 1658.097239][T29006] e9030028 39230028 7fa94000 7d20579e <0b090000> e9030038
> 39230038 7fa94000
> [ 1658.097374][T29006] ---[ end trace 7fba05e648f90a83 ]---
> [ 1658.300668][T28976] Kernel panic - not syncing: Fatal exception
>
> [ 812.828970][ T5544] ------------[ cut here ]------------
> [ 812.832371][ T5547] ------------[ cut here ]------------
> [ 812.834321][ T5544] kernel BUG at fs/locks.c:359!
> [ 812.836280][ T5550] ------------[ cut here ]------------
> [ 812.836292][ T5550] kernel BUG at fs/locks.c:359!
> [ 812.836302][ T5550] Internal error: Oops - BUG: 0 [#1] SMP
> [ 812.836310][ T5550] Modules linked in: thunderx2_pmu processor ip_tables xfs
> libcrc32c sd_mod ahci libahci mlx5_core libata dm_mirror dm_region_hash dm_log
> dm_mod efivarfs
> [ 812.836372][ T5550] CPU: 56 PID: 5550 Comm: fcntl36 Tainted:
> G L 5.6.0-rc5-next-20200311+ #3
> [ 812.836379][ T5550] Hardware name: HPE Apollo
> 70 /C01_APACHE_MB , BIOS L50_5.13_1.11 06/18/2019
> [ 812.836391][ T5550] pstate: 20400009 (nzCv daif +PAN -UAO)
> [ 812.836409][ T5550] pc : locks_release_private+0x190/0x1b8
> [ 812.836418][ T5550] lr : locks_release_private+0x54/0x1b8
> [ 812.836423][ T5550] sp : 44ff009524ecfce0
> [ 812.836430][ T5550] x29: 44ff009524ecfd00 x28: 8fff00082bc07340
> [ 812.836442][ T5550] x27: 11ff0088239a8f08 x26: 0000000000000007
> [ 812.836454][ T5550] x25: 74ff000a4c282284 x24: 0000000000000000
> [ 812.836465][ T5550] x23: 0000000000000001 x22: 0000000000000000
> [ 812.836476][ T5550] x21: b9ff008bbe1452d8 x20: 74ff000a4c282258
> [ 812.836488][ T5550] x19: 74ff000a4c282230 x18: 0000000000000000
> [ 812.836499][ T5550] x17: 0000000000000000 x16: 0000000000000000
> [ 812.836510][ T5550] x15: 0000000000000000 x14: 000000000000e8e8
> [ 812.836521][ T5550] x13: 00000000abc00dd2 x12: ffff900010083524
> [ 812.836532][ T5550] x11: 0000000000000074 x10: ffff8000a4c28226
> [ 812.836543][ T5550] x9 : ffff8000a4c28225 x8 : 61ff009523ee0ac8
> [ 812.836555][ T5550] x7 : ffff900010530d1c x6 : 0000000000000000
> [ 812.836565][ T5550] x5 : 0000000000000000 x4 : 0000000000000001
> [ 812.836576][ T5550] x3 : ffff90001052c138 x2 : 0000000000000000
> [ 812.836588][ T5550] x1 : 0000000000000008 x0 : ffff900013063530
> [ 812.836599][ T5550] Call trace:
> [ 812.836611][ T5550] locks_release_private+0x190/0x1b8
> [ 812.836620][ T5550] fcntl_setlk+0x2d0/0x5d4
> [ 812.836631][ T5550] do_fcntl+0xb40/0x17c8
> [ 812.836640][ T5550] __arm64_sys_fcntl+0x84/0xf4
> [ 812.836650][ T5550] do_el0_svc+0x170/0x240
> [ 812.836660][ T5550] el0_sync_handler+0x150/0x250
> [ 812.836668][ T5550] el0_sync+0x164/0x180
> [ 812.836685][ T5550] Code: d4210000 94046846 f00159a0 9114c000 (d4210000)
> [ 812.837092][ T5550] ---[ end trace 2e670f80ae21d9a2 ]---
> [ 812.837101][ T5550] Kernel panic - not syncing: Fatal exception
> [ 812.837409][ T5550] SMP: stopping secondary CPUs
> [ 812.839632][ T5547] kernel BUG at fs/locks.c:359!
> [ 813.907661][ T5550] SMP: failed to stop secondary CPUs 0,56,130
> [ 813.913586][ T5550] Kernel Offset: disabled
> [ 813.917771][ T5550] CPU features: 0x06002,61000c18
> [ 813.922561][ T5550] Memory Limit: none
> [ 813.926619][ T5550] ---[ end Kernel panic - not syncing: Fatal exception ]---

My apologies for not seeing this mail sooner. This should be fixed by
the version in the current linux-next branch. Please let me know if
you're still seeing this.

Thanks,
--
Jeff Layton <jlayton@kernel.org>

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