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WARNING in __xlate_proc_name (2)

Status: closed as dup on 2020/01/27 14:16
Subsystems: afs
[Documentation on labels]
Reported-by: syzbot+016c7186c1d55575bab8@syzkaller.appspotmail.com
First crash: 1562d, last: 1544d
Cause bisection: introduced by (bisect log) :
commit 989782dcdc91a5e6d5999c7a52a84a60a0811e56
Author: David Howells <dhowells@redhat.com>
Date: Thu Nov 2 15:27:50 2017 +0000

  afs: Overhaul cell database management

Crash: WARNING in __xlate_proc_name (log)
Repro: C syz .config
  
▶ ▼ Duplicate of
Title Repro Cause bisect Fix bisect Count Last Reported
WARNING in __proc_create (2) afs C done 4 1549d 1549d
▶ ▼ Discussions (1)
Title Replies (including bot) Last reply
WARNING in __xlate_proc_name (2) 2 (3) 2020/01/27 14:16
▶ ▼ Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in __xlate_proc_name netfilter C 11 2237d 2273d 4/26 fixed on 2018/03/23 18:14

Sample crash report:
------------[ cut here ]------------
name 'šþ/]uwo,"¹cðacýµ‚•´[²$ð“5x~µsþ&æ¡tw}ùª™zºcp('
WARNING: CPU: 1 PID: 3184 at fs/proc/generic.c:178 __xlate_proc_name fs/proc/generic.c:178 [inline]
WARNING: CPU: 1 PID: 3184 at fs/proc/generic.c:178 __xlate_proc_name+0xe7/0x110 fs/proc/generic.c:161
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 3184 Comm: kworker/1:113 Not tainted 5.5.0-rc7-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+0x197/0x210 lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:221
 __warn.cold+0x2f/0x3e kernel/panic.c:582
 report_bug+0x289/0x300 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 fixup_bug arch/x86/kernel/traps.c:169 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:267
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:286
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:__xlate_proc_name fs/proc/generic.c:178 [inline]
RIP: 0010:__xlate_proc_name+0xe7/0x110 fs/proc/generic.c:161
Code: 8f 09 91 ff 44 89 e0 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 78 09 91 ff 4c 89 fe 48 c7 c7 40 07 39 88 e8 68 b9 61 ff <0f> 0b 41 bc fe ff ff ff eb cb 4c 89 f7 e8 97 c9 ce ff e9 3d ff ff
RSP: 0018:ffffc90008aff9d0 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff88809f1b9d3b RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815e5326 RDI: fffff5200115ff2c
RBP: ffffc90008affa00 R08: ffff88809e276340 R09: ffffed1015d26621
R10: ffffed1015d26620 R11: ffff8880ae933107 R12: 0000000000000000
R13: ffff88809f1b9d39 R14: ffffc90008affb08 R15: ffff88809f1b9d39
 xlate_proc_name fs/proc/generic.c:194 [inline]
 __proc_create+0xac/0x860 fs/proc/generic.c:387
 proc_mkdir_data+0xbc/0x1b0 fs/proc/generic.c:473
 proc_net_mkdir include/linux/proc_fs.h:139 [inline]
 afs_proc_cell_setup+0x95/0x190 fs/afs/proc.c:610
 afs_activate_cell fs/afs/cell.c:591 [inline]
 afs_manage_cell+0x54b/0x1410 fs/afs/cell.c:673
 process_one_work+0x9af/0x1740 kernel/workqueue.c:2264
 worker_thread+0x98/0xe40 kernel/workqueue.c:2410
 kthread+0x361/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Kernel Offset: disabled
Rebooting in 86400 seconds..

Crashes (36):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2020/01/23 21:00 upstream 131701c697e8 3334d684 .config console log report syz C ci-upstream-kasan-gce-selinux-root
2020/01/23 19:34 upstream 131701c697e8 3334d684 .config console log report syz C ci-upstream-kasan-gce-root
2020/01/22 10:01 upstream d96d875ef5dd 8eda0b95 .config console log report syz C ci-upstream-kasan-gce
2020/01/10 16:52 upstream e69ec487b2c7 4de4e9f0 .config console log report syz C ci-upstream-kasan-gce-selinux-root
2020/01/10 16:22 upstream e69ec487b2c7 4de4e9f0 .config console log report syz C ci-upstream-kasan-gce-selinux-root
2020/01/09 16:38 upstream b07f636fca1c ddc3e859 .config console log report syz C ci-upstream-kasan-gce-root
2020/01/09 16:18 upstream b07f636fca1c ddc3e859 .config console log report syz C ci-upstream-kasan-gce-root
2020/01/09 10:48 upstream b07f636fca1c ddc3e859 .config console log report syz C ci-upstream-kasan-gce
2020/01/09 10:05 upstream b07f636fca1c ddc3e859 .config console log report syz C ci-upstream-kasan-gce
2020/01/22 04:52 upstream d96d875ef5dd 8eda0b95 .config console log report syz C ci-upstream-kasan-gce-386
2020/01/09 11:09 upstream b07f636fca1c ddc3e859 .config console log report syz C ci-upstream-kasan-gce-386
2020/01/09 10:16 upstream b07f636fca1c ddc3e859 .config console log report syz C ci-upstream-kasan-gce-386
2020/01/25 16:41 upstream d5d359b0ac3f 2e95ab33 .config console log report ci-upstream-kasan-gce-selinux-root
2020/01/25 13:23 upstream d5d359b0ac3f 2e95ab33 .config console log report ci-upstream-kasan-gce
2020/01/25 06:56 upstream 6381b442836e 2e95ab33 .config console log report ci-upstream-kasan-gce
2020/01/22 19:20 upstream d96d875ef5dd 8eda0b95 .config console log report ci-upstream-kasan-gce
2020/01/22 14:40 upstream d96d875ef5dd 8eda0b95 .config console log report ci-upstream-kasan-gce
2020/01/22 14:32 upstream d96d875ef5dd 8eda0b95 .config console log report ci-upstream-kasan-gce-root
2020/01/20 04:14 upstream 8f8972a3127f 0342f8c7 .config console log report ci-upstream-kasan-gce
2020/01/18 02:56 upstream ab7541c3addd 3de7aabb .config console log report ci-upstream-kasan-gce
2020/01/14 15:42 upstream b3a987b0264d 32881205 .config console log report ci-upstream-kasan-gce
2020/01/14 11:47 upstream b3a987b0264d 32881205 .config console log report ci-upstream-kasan-gce-selinux-root
2020/01/14 11:23 upstream b3a987b0264d 32881205 .config console log report ci-upstream-kasan-gce
2020/01/11 18:30 upstream bef1d88263ff 4c04afaa .config console log report ci-upstream-kasan-gce
2020/01/11 05:38 upstream e69ec487b2c7 4de4e9f0 .config console log report ci-upstream-kasan-gce
2020/01/09 14:03 upstream b07f636fca1c ddc3e859 .config console log report ci-upstream-kasan-gce
2020/01/09 09:34 upstream b07f636fca1c ddc3e859 .config console log report ci-upstream-kasan-gce
2020/01/22 14:59 upstream d96d875ef5dd 8eda0b95 .config console log report ci-upstream-kasan-gce-386
2020/01/22 14:41 upstream d96d875ef5dd 8eda0b95 .config console log report ci-upstream-kasan-gce-386
2020/01/16 08:35 upstream 51d69817519f f9b69507 .config console log report ci-upstream-kasan-gce-386
2020/01/10 03:02 upstream e69ec487b2c7 4de4e9f0 .config console log report ci-upstream-kasan-gce-386
2020/01/09 09:50 upstream b07f636fca1c ddc3e859 .config console log report ci-upstream-kasan-gce-386
2020/01/27 06:58 linux-next 2747d5fdab78 dd56146d .config console log report ci-upstream-linux-next-kasan-gce-root
2020/01/27 06:38 linux-next 2747d5fdab78 dd56146d .config console log report ci-upstream-linux-next-kasan-gce-root
2020/01/27 06:30 linux-next 2747d5fdab78 dd56146d .config console log report ci-upstream-linux-next-kasan-gce-root
2020/01/12 22:05 linux-next 6c09d7dbb7d3 31290a45 .config console log report ci-upstream-linux-next-kasan-gce-root
* Struck through repros no longer work on HEAD.