syzbot


WARNING in inc_nlink (3)

Status: upstream: reported C repro on 2022/03/17 16:37
Subsystems: fs
[Documentation on labels]
Reported-by: syzbot+2b3af42c0644df1e4da9@syzkaller.appspotmail.com
First crash: 971d, last: 9m
Cause bisection: failed (error log, bisect log)
  
Fix bisection: failed (error log, bisect log)
  
Discussions (16)
Title Replies (including bot) Last reply
[syzbot] Monthly fs report (Jul 2024) 0 (1) 2024/07/18 07:59
[syzbot] Monthly jfs report (May 2024) 0 (1) 2024/05/08 14:26
[syzbot] Monthly jfs report (Apr 2024) 0 (1) 2024/04/08 08:30
[syzbot] Monthly jfs report (Feb 2024) 0 (1) 2024/02/04 13:30
[syzbot] Monthly jfs report (Jan 2024) 0 (1) 2024/01/04 12:38
[syzbot] Monthly v9fs report (Nov 2023) 0 (1) 2023/11/22 09:42
[syzbot] Monthly jfs report (Nov 2023) 0 (1) 2023/11/03 10:22
[syzbot] Monthly v9fs report (Oct 2023) 0 (1) 2023/10/11 14:38
[syzbot] Monthly v9fs report (Sep 2023) 0 (1) 2023/09/11 08:39
[syzbot] Monthly v9fs report (Aug 2023) 0 (1) 2023/08/09 12:33
[syzbot] Monthly 9p report (Jul 2023) 0 (1) 2023/07/10 09:36
[syzbot] Monthly 9p report (Jun 2023) 0 (1) 2023/06/07 13:47
[syzbot] Monthly 9p report (May 2023) 0 (1) 2023/05/07 06:35
[syzbot] Monthly 9p report 0 (1) 2023/04/06 08:17
Re: [syzbot] WARNING in inc_nlink (3) 1 (1) 2022/03/18 15:29
[syzbot] WARNING in inc_nlink (3) 0 (1) 2022/03/17 16:37
Similar bugs (9)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 WARNING in inc_nlink (2) C error 102 712d 1468d 0/1 upstream: reported C repro on 2020/11/01 15:25
linux-5.15 WARNING in inc_nlink origin:lts-only C done 82 5d02h 599d 0/3 upstream: reported C repro on 2023/03/20 05:26
upstream WARNING in inc_nlink (2) fs C inconclusive done 21 976d 1313d 20/28 fixed on 2022/03/08 16:11
linux-6.1 WARNING in inc_nlink 81 556d 578d 0/3 auto-obsoleted due to no activity on 2023/07/31 15:23
linux-4.19 WARNING in inc_nlink C done 8 1542d 1691d 1/1 fixed on 2020/09/18 07:23
linux-4.14 WARNING in inc_nlink C done 21 1550d 1692d 1/1 fixed on 2020/09/11 09:49
linux-4.14 WARNING in inc_nlink (2) C 47 628d 1463d 0/1 upstream: reported C repro on 2020/11/06 09:55
upstream WARNING in inc_nlink C done 26 1580d 1683d 15/28 fixed on 2020/09/16 22:51
linux-6.1 WARNING in inc_nlink (2) origin:upstream C error 54 5d17h 316d 0/3 upstream: reported C repro on 2023/12/28 21:17
Last patch testing requests (12)
Created Duration User Patch Repo Result
2024/04/02 15:51 15m retest repro upstream report log
2024/03/04 20:33 25m retest repro upstream OK log
2024/03/04 10:02 1h07m retest repro upstream OK log
2024/03/04 08:54 18m retest repro upstream OK log
2024/02/10 18:22 16m retest repro linux-next report log
2023/12/21 13:19 2h35m retest repro upstream report log
2023/12/07 11:47 1h24m retest repro upstream report log
2023/12/07 11:38 12m retest repro upstream report log
2023/09/23 17:30 20m retest repro linux-next OK log
2023/09/23 17:30 19m retest repro linux-next OK log
2022/03/18 15:10 14m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/ aad611a868d1 OK
2022/03/18 13:43 22m hdanton@sina.com patch https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/ aad611a868d1 error
Fix bisection attempts (3)
Created Duration User Patch Repo Result
2023/03/17 12:09 8h04m bisect fix upstream error job log
2023/02/15 11:45 23m bisect fix upstream OK (0) job log log
2022/11/06 04:00 21m bisect fix upstream OK (0) job log log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 5219 at fs/inode.c:391 inc_nlink+0x129/0x140 fs/inode.c:391
Modules linked in:
CPU: 1 UID: 0 PID: 5219 Comm: syz-executor630 Not tainted 6.11.0-rc2-syzkaller-00315-g7006fe2f7f78 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
RIP: 0010:inc_nlink+0x129/0x140 fs/inode.c:391
Code: ff e9 33 ff ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c 45 ff ff ff 4c 89 ef e8 82 ec e7 ff e9 38 ff ff ff e8 28 cc 83 ff 90 <0f> 0b 90 e9 7b ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00
RSP: 0018:ffffc90003a5fd30 EFLAGS: 00010293
RAX: ffffffff820faac8 RBX: 1ffff1100fb56010 RCX: ffff88801a711e00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff820faa42 R09: 0000000000000000
R10: ffffc90003a5fca8 R11: ffffffff82bd5740 R12: dffffc0000000000
R13: ffff88807dab0080 R14: ffff88807dab0038 R15: 0000000000000000
FS:  000055556cc8c380(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055b2f65e7d90 CR3: 000000007875a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inode_inc_link_count include/linux/fs.h:2456 [inline]
 sysv_mkdir+0x21/0x130 fs/sysv/namei.c:119
 vfs_mkdir+0x2f9/0x4f0 fs/namei.c:4210
 do_mkdirat+0x264/0x3a0 fs/namei.c:4233
 __do_sys_mkdir fs/namei.c:4253 [inline]
 __se_sys_mkdir fs/namei.c:4251 [inline]
 __x64_sys_mkdir+0x6c/0x80 fs/namei.c:4251
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff36f5eab17
Code: ff ff 77 07 31 c0 c3 0f 1f 40 00 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffef7e4ffb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007ff36f5eab17
RDX: 0000000000000000 RSI: 00000000000001ff RDI: 0000000020000140
RBP: 0000000020000140 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffef7e50050 R14: 0000000000000000 R15: 0000000000000000
 </TASK>

Crashes (1741):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/08/12 07:38 upstream 7006fe2f7f78 6f4edef4 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in inc_nlink
2024/03/19 15:46 upstream fe46a7dd189e e104824c .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in inc_nlink
2024/03/19 14:22 upstream fe46a7dd189e baa80228 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-root WARNING in inc_nlink
2024/03/11 03:08 upstream 137e0ec05aeb 6ee49f2e .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-smack-root WARNING in inc_nlink
2024/09/20 18:25 upstream baeb9a7d8b60 6f888b75 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root WARNING in inc_nlink
2024/03/08 02:21 upstream 135288b73cef cf82cde1 .config console log report syz C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-qemu-upstream WARNING in inc_nlink
2024/01/16 01:59 linux-next 8d04a7e2ee3f 2a7bcc7f .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root WARNING in inc_nlink
2024/10/21 07:19 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 9ec59cb3edc7 cd6fc0a3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-gce-arm64 WARNING in inc_nlink
2024/04/16 03:00 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci b5d2afe8745b 0d592ce4 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-gce-arm64 WARNING in inc_nlink
2023/11/23 11:09 upstream 9b6de136b5f0 03e12510 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-badwrites-root WARNING in inc_nlink
2023/11/15 22:37 upstream c42d9eeef8e5 cb976f63 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-root WARNING in inc_nlink
2023/08/21 02:40 upstream 706a74159504 d216d8a0 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in inc_nlink
2022/09/25 09:32 upstream 1a61b828566f 0042f2b4 .config strace log report syz C [disk image] [vmlinux] ci-upstream-kasan-gce-selinux-root WARNING in inc_nlink
2022/08/15 08:54 upstream 7ebfc85e2cd7 8dfcaa3d .config strace log report syz C ci-upstream-kasan-gce-selinux-root WARNING in inc_nlink
2022/08/15 07:19 upstream 7ebfc85e2cd7 8dfcaa3d .config strace log report syz C ci-upstream-kasan-gce-selinux-root WARNING in inc_nlink
2022/08/15 06:47 upstream 7ebfc85e2cd7 8dfcaa3d .config strace log report syz C ci-upstream-kasan-gce-selinux-root WARNING in inc_nlink
2022/07/20 15:16 upstream ca85855bdcae 775344bc .config strace log report syz C ci-upstream-kasan-gce-smack-root WARNING in inc_nlink
2022/07/20 14:46 upstream ca85855bdcae 775344bc .config strace log report syz C ci-upstream-kasan-gce-smack-root WARNING in inc_nlink
2022/07/20 14:15 upstream ca85855bdcae 775344bc .config strace log report syz C ci-upstream-kasan-gce-smack-root WARNING in inc_nlink
2022/07/09 14:27 upstream e5524c2a1fc4 b5765a15 .config strace log report syz C ci-upstream-kasan-gce-root WARNING in inc_nlink
2022/06/02 04:39 upstream 8171acb8bc9b b4bc6a3d .config strace log report syz C ci-upstream-kasan-gce-root WARNING in inc_nlink
2022/06/02 04:18 upstream 8171acb8bc9b b4bc6a3d .config strace log report syz C ci-upstream-kasan-gce-root WARNING in inc_nlink
2022/03/13 16:54 upstream aad611a868d1 9e8eaa75 .config console log report syz C ci-upstream-kasan-gce-root WARNING in inc_nlink
2022/03/13 16:56 upstream aad611a868d1 9e8eaa75 .config console log report syz C ci-qemu-upstream WARNING in inc_nlink
2022/07/13 21:59 linux-next cb71b93c2dc3 5d921b08 .config strace log report syz C ci-upstream-linux-next-kasan-gce-root WARNING in inc_nlink
2022/07/13 21:30 linux-next cb71b93c2dc3 5d921b08 .config strace log report syz C ci-upstream-linux-next-kasan-gce-root WARNING in inc_nlink
2022/03/13 17:07 linux-next 91265a6da44d 9e8eaa75 .config console log report syz C ci-upstream-linux-next-kasan-gce-root WARNING in inc_nlink
2024/11/08 23:50 upstream f1dce1f09380 6b856513 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in inc_nlink
2024/11/08 19:31 upstream 906bd684e4b1 179b040e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in inc_nlink
2024/11/08 15:16 upstream 906bd684e4b1 179b040e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in inc_nlink
2024/11/08 08:24 upstream 906bd684e4b1 179b040e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in inc_nlink
2024/11/08 05:02 upstream 906bd684e4b1 179b040e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in inc_nlink
2024/11/08 03:48 upstream ff7afaeca1a1 c069283c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in inc_nlink
2024/11/08 01:22 upstream ff7afaeca1a1 c069283c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in inc_nlink
2024/11/07 21:39 upstream ff7afaeca1a1 867e44df .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in inc_nlink
2024/11/07 20:36 upstream ff7afaeca1a1 867e44df .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in inc_nlink
2024/11/07 18:23 upstream ff7afaeca1a1 867e44df .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in inc_nlink
2024/11/07 16:27 upstream ff7afaeca1a1 867e44df .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in inc_nlink
2024/11/07 15:16 upstream ff7afaeca1a1 867e44df .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in inc_nlink
2024/11/07 12:52 upstream ff7afaeca1a1 867e44df .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in inc_nlink
2024/11/07 03:48 upstream 7758b206117d df3dc63b .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in inc_nlink
2024/11/07 00:07 upstream 7758b206117d df3dc63b .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in inc_nlink
2024/11/06 22:32 upstream 7758b206117d df3dc63b .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in inc_nlink
2024/11/06 20:21 upstream 7758b206117d df3dc63b .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in inc_nlink
2024/11/06 12:19 upstream 2e1b3cc9d7f7 3a465482 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in inc_nlink
2024/11/05 17:13 upstream 2e1b3cc9d7f7 da38b4c9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in inc_nlink
2024/11/05 06:08 upstream 557329bcecc2 509da429 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in inc_nlink
2024/11/05 01:11 upstream 557329bcecc2 509da429 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in inc_nlink
2024/11/04 23:23 upstream 557329bcecc2 509da429 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in inc_nlink
2024/11/03 12:05 upstream 3e5e6c9900c3 f00eed24 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-badwrites-root WARNING in inc_nlink
2024/06/20 09:02 upstream 2ccbdf43d5e7 41b7e219 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in inc_nlink
2024/06/05 01:28 upstream 32f88d65f01b e1e2c66e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in inc_nlink
2024/11/08 23:38 upstream f1dce1f09380 d40c056e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in inc_nlink
2024/11/08 11:17 upstream 906bd684e4b1 179b040e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in inc_nlink
2024/11/08 09:29 upstream 906bd684e4b1 179b040e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in inc_nlink
2024/11/08 06:32 upstream 906bd684e4b1 179b040e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in inc_nlink
2024/11/07 23:41 upstream ff7afaeca1a1 867e44df .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in inc_nlink
2024/11/07 22:48 upstream ff7afaeca1a1 867e44df .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in inc_nlink
2024/11/07 19:34 upstream ff7afaeca1a1 867e44df .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in inc_nlink
2024/11/07 11:24 upstream 7758b206117d df3dc63b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in inc_nlink
2024/11/07 06:42 upstream 7758b206117d df3dc63b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in inc_nlink
2024/11/06 10:06 upstream 2e1b3cc9d7f7 3a465482 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in inc_nlink
2024/11/06 06:41 upstream 2e1b3cc9d7f7 3a465482 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in inc_nlink
2024/11/05 23:11 upstream 2e1b3cc9d7f7 da38b4c9 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in inc_nlink
2024/11/05 21:35 upstream 2e1b3cc9d7f7 da38b4c9 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in inc_nlink
2024/11/05 20:20 upstream 2e1b3cc9d7f7 da38b4c9 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in inc_nlink
2024/11/05 18:51 upstream 2e1b3cc9d7f7 da38b4c9 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in inc_nlink
2024/11/05 15:49 upstream 2e1b3cc9d7f7 da38b4c9 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in inc_nlink
2024/11/05 09:55 upstream 557329bcecc2 509da429 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in inc_nlink
2024/11/05 02:39 upstream 557329bcecc2 509da429 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in inc_nlink
2024/11/04 21:47 upstream 59b723cd2adb 0754ea12 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in inc_nlink
2024/11/04 18:01 upstream 59b723cd2adb 0754ea12 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in inc_nlink
2024/11/04 16:45 upstream 59b723cd2adb 0754ea12 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in inc_nlink
2024/06/02 10:00 upstream 89be4025b0db c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in inc_nlink
2024/06/21 12:15 upstream 50736169ecc8 c2e07261 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in inc_nlink
2022/03/13 16:34 upstream aad611a868d1 9e8eaa75 .config console log report info ci-upstream-kasan-gce-root WARNING in inc_nlink
2024/11/08 02:24 linux-next 74741a050b79 c069283c .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in inc_nlink
2024/11/07 07:42 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8936d33c1f69 df3dc63b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in inc_nlink
2024/11/05 04:08 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 46f782153ea2 509da429 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in inc_nlink
* Struck through repros no longer work on HEAD.