Hi guys, Just got a reproducible error in btrfs/058. The backtrace is completely in VFS territory, not btrfs related lock at all: BTRFS info (device dm-5): checking UUID tree sysrq: Show Blocked State task PC stack pid father rm D 0 560678 560445 0x00000000 Call Trace: __schedule+0x5c7/0xea0 ? __sched_text_start+0x8/0x8 ? lock_downgrade+0x380/0x380 ? lock_contended+0x730/0x730 ? debug_check_no_locks_held+0x60/0x60 schedule+0x7b/0x170 schedule_preempt_disabled+0x18/0x30 __mutex_lock+0x481/0xc70 ? __fdget_pos+0x7e/0x80 ? mutex_trylock+0x190/0x190 ? debug_lockdep_rcu_enabled+0x26/0x40 ? kmem_cache_free+0x157/0x3b0 ? putname+0x73/0x80 ? __ia32_sys_rmdir+0x30/0x30 ? __check_object_size+0x134/0x1e6 mutex_lock_nested+0x1b/0x20 ? mutex_lock_nested+0x1b/0x20 __fdget_pos+0x7e/0x80 ksys_lseek+0x1d/0xf0 __x64_sys_lseek+0x43/0x50 do_syscall_64+0x79/0xe0 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f7518e5652b Code: Bad RIP value. RSP: 002b:00007ffead7508e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000008 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7518e5652b RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f7518f267e0 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000002 R14: 00007f7518f2be68 R15: 00007f7518f287e0 Is this a known bug in VFS layer? Thanks, Qu
Attachment:
signature.asc
Description: OpenPGP digital signature
