WARNING: proc registration bug in afs_manage

Title	Replies (including bot)	Last reply
[PATCH 5.9 000/757] 5.9.2-rc1 review	766 (766)	2020/10/30 08:32
[PATCH 5.8 000/633] 5.8.17-rc1 review	638 (638)	2020/10/28 22:08
WARNING: proc registration bug in afs_manage_cell	1 (3)	2020/10/16 14:02

Created	Duration	User	Patch	Repo	Result
2020/10/16 13:42	18m	dhowells@redhat.com		git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git 7530d3eb3dcf1a30750e8e7f1f88b782b96b72b8	OK
2020/10/13 20:14	13m	dhowells@redhat.com		git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git f8eb8d1c6a853f617ca9ee233bb2d230401c5bdc	report log

Created

Duration

User

Patch

Repo

Result

2020/10/16 13:42

18m

dhowells@redhat.com

git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git 7530d3eb3dcf1a30750e8e7f1f88b782b96b72b8

2020/10/13 20:14

13m

dhowells@redhat.com

git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git f8eb8d1c6a853f617ca9ee233bb2d230401c5bdc

report log

------------[ cut here ]------------ proc_dir_entry 'afs/^]$[+.](%{' already registered WARNING: CPU: 1 PID: 2468 at fs/proc/generic.c:371 proc_register+0x34c/0x700 fs/proc/generic.c:371 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 2468 Comm: kworker/1:2 Not tainted 5.9.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: afs afs_manage_cell Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x198/0x1fd lib/dump_stack.c:118 panic+0x382/0x7fb kernel/panic.c:231 __warn.cold+0x20/0x4b kernel/panic.c:600 report_bug+0x1bd/0x210 lib/bug.c:198 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536 RIP: 0010:proc_register+0x34c/0x700 fs/proc/generic.c:371 Code: df 48 89 f9 48 c1 e9 03 80 3c 01 00 0f 85 5d 03 00 00 48 8b 44 24 28 48 c7 c7 60 61 9a 88 48 8b b0 d8 00 00 00 e8 46 1b 5d ff <0f> 0b 48 c7 c7 60 f6 1e 8a e8 76 78 3d 06 48 8b 4c 24 38 48 b8 00 RSP: 0018:ffffc90008387ac8 EFLAGS: 00010282 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff8880a06f0540 RSI: ffffffff815f5985 RDI: fffff52001070f4b RBP: ffff8880a8237c50 R08: 0000000000000001 R09: ffff8880ae5318e7 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888086ce9d98 R13: ffff888086ce9c40 R14: dffffc0000000000 R15: 000000000000000a proc_mkdir_data+0x140/0x1a0 fs/proc/generic.c:487 proc_net_mkdir include/linux/proc_fs.h:201 [inline] afs_proc_cell_setup+0xb2/0x1f0 fs/afs/proc.c:620 afs_activate_cell fs/afs/cell.c:615 [inline] afs_manage_cell+0x56a/0x11c0 fs/afs/cell.c:697 process_one_work+0x94c/0x1670 kernel/workqueue.c:2269 worker_thread+0x64c/0x1120 kernel/workqueue.c:2415 kthread+0x3b5/0x4a0 kernel/kthread.c:292 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 Kernel Offset: disabled Rebooting in 86400 seconds..