Observed a ecryptFS crash

[liushuoran]

Hi Tyhicks,

We observed a ecryptFS crash occasionally in Linux kernel 4.1.18. The call trace is attached below. Is it a known issueï Look forward to hearing from you. Thanks in advance!

[19314.529479s][pid:2694,cpu3,GAC_Executor[0]]Call trace:
[19314.529510s][pid:2694,cpu3,GAC_Executor[0]][<ffffffc0000f3898>] do_raw_spin_lock+0x20/0x200
[19314.529510s][pid:2694,cpu3,GAC_Executor[0]][<ffffffc001031fb0>] _raw_spin_lock+0x28/0x34
[19314.529541s][pid:2694,cpu3,GAC_Executor[0]][<ffffffc0003908e0>] selinux_inode_free_security+0x3c/0x94
[19314.529541s][pid:2694,cpu3,GAC_Executor[0]][<ffffffc000386b04>] security_inode_free+0x2c/0x38
[19314.529541s][pid:2694,cpu3,GAC_Executor[0]][<ffffffc0001fff88>] __destroy_inode+0x2c/0x180
[19314.529571s][pid:2694,cpu3,GAC_Executor[0]][<ffffffc000201660>] destroy_inode+0x30/0xa0
[19314.529571s][pid:2694,cpu3,GAC_Executor[0]][<ffffffc0002017d8>] evict+0x108/0x1c0
[19314.529571s][pid:2694,cpu3,GAC_Executor[0]][<ffffffc000202588>] iput+0x184/0x258
[19314.529602s][pid:2694,cpu3,GAC_Executor[0]][<ffffffc0002f27d0>] ecryptfs_evict_inode+0x30/0x3c
[19314.529602s][pid:2694,cpu3,GAC_Executor[0]][<ffffffc00020177c>] evict+0xac/0x1c0
[19314.529602s][pid:2694,cpu3,GAC_Executor[0]][<ffffffc0002018d4>] dispose_list+0x44/0x5c
[19314.529632s][pid:2694,cpu3,GAC_Executor[0]][<ffffffc000202d28>] evict_inodes+0xcc/0x12c
[19314.529632s][pid:2694,cpu3,GAC_Executor[0]][<ffffffc0001e5d04>] generic_shutdown_super+0x58/0xe4
[19314.529632s][pid:2694,cpu3,GAC_Executor[0]][<ffffffc0001e7164>] kill_anon_super+0x30/0x74
[19314.529663s][pid:2694,cpu3,GAC_Executor[0]][<ffffffc0002f16a4>] ecryptfs_kill_block_super+0x24/0x54
[19314.529663s][pid:2694,cpu3,GAC_Executor[0]][<ffffffc0001e6690>] deactivate_locked_super+0x60/0x8c
[19314.529663s][pid:2694,cpu3,GAC_Executor[0]][<ffffffc0001e6754>] deactivate_super+0x98/0xa4
[19314.529693s][pid:2694,cpu3,GAC_Executor[0]][<ffffffc000206d54>] cleanup_mnt+0x50/0xd0
[19314.529693s][pid:2694,cpu3,GAC_Executor[0]][<ffffffc000206e48>] __cleanup_mnt+0x20/0x2c
[19314.529693s][pid:2694,cpu3,GAC_Executor[0]][<ffffffc0000c1bac>] task_work_run+0xbc/0xf8
[19314.529724s][pid:2694,cpu3,GAC_Executor[0]][<ffffffc0000a3e98>] do_exit+0x2d4/0xa14
[19314.529724s][pid:2694,cpu3,GAC_Executor[0]][<ffffffc0000a56a8>] do_group_exit+0x60/0xf8
[19314.529724s][pid:2694,cpu3,GAC_Executor[0]][<ffffffc0000b26ac>] get_signal+0x284/0x598
[19314.529754s][pid:2694,cpu3,GAC_Executor[0]][<ffffffc00008950c>] do_signal+0x170/0x5b8
[19314.529754s][pid:2694,cpu3,GAC_Executor[0]][<ffffffc000089be0>] do_notify_resume+0x70/0x78
[19314.529785s][pid:2694,cpu3,GAC_Executor[0]]Code: aa0003f3 aa1e03e0 97fe7718 5289d5a0 (b9400661) 
[19314.529907s][pid:2694,cpu3,GAC_Executor[0]]---[ end trace 382e4b6264b035b5 ]---
[19314.529907s][pid:2694,cpu3,GAC_Executor[0]]Kernel panic - not syncing: Fatal exception

Regards,
Shuoran