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WARNING in inc_nlink

Status: auto-obsoleted due to no activity on 2023/07/31 15:23
Reported-by: syzbot+2ee36b6d338031644562@syzkaller.appspotmail.com
First crash: 659d, last: 637d
▶ ▼ 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 793d 1549d 0/1 upstream: reported C repro on 2020/11/01 15:25
linux-5.15 WARNING in inc_nlink origin:lts-only C done 269 12h42m 680d 0/3 upstream: reported C repro on 2023/03/20 05:26
upstream WARNING in inc_nlink (2) fs C inconclusive done 21 1057d 1394d 20/28 fixed on 2022/03/08 16:11
upstream WARNING in inc_nlink (3) fs C error error 4945 15m 1048d 0/28 upstream: reported C repro on 2022/03/17 16:37
linux-4.19 WARNING in inc_nlink C done 8 1623d 1772d 1/1 fixed on 2020/09/18 07:23
linux-4.14 WARNING in inc_nlink C done 21 1631d 1773d 1/1 fixed on 2020/09/11 09:49
linux-4.14 WARNING in inc_nlink (2) C 47 709d 1544d 0/1 upstream: reported C repro on 2020/11/06 09:55
upstream WARNING in inc_nlink C done 26 1661d 1764d 15/28 fixed on 2020/09/16 22:51
linux-6.1 WARNING in inc_nlink (2) origin:upstream missing-backport C error 186 13h40m 397d 0/3 upstream: reported C repro on 2023/12/28 21:17

Sample crash report:
loop2: detected capacity change from 0 to 512
EXT2-fs (loop2): warning: mounting ext3 filesystem as ext2
------------[ cut here ]------------
WARNING: CPU: 1 PID: 9405 at fs/inode.c:387 inc_nlink+0x128/0x154 fs/inode.c:387
Modules linked in:
CPU: 1 PID: 9405 Comm: syz-executor.2 Not tainted 6.1.27-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : inc_nlink+0x128/0x154 fs/inode.c:387
lr : inc_nlink+0x128/0x154 fs/inode.c:387
sp : ffff800020487b60
x29: ffff800020487b60 x28: dfff800000000000 x27: 0000000000000000
x26: 1fffe0001a8ceb4b x25: ffff800012366f88 x24: 0000000000000000
x23: 1fffe000254a1436 x22: dfff800000000000 x21: 0000000000000000
x20: ffff00012a50a168 x19: ffff00012a50a1b0 x18: ffff8000204873c0
x17: ffff80001558d000 x16: ffff800012034640 x15: 0000000000000000
x14: 00000000ffff8000 x13: 00000000312ffa9f x12: 0000000000040000
x11: 000000000000f9e3 x10: ffff80001f230000 x9 : ffff800008a9fb34
x8 : 000000000000f9e4 x7 : 0000000000000000 x6 : 000000000000003f
x5 : 0000000000000040 x4 : 0000000000000000 x3 : 0000000000000010
x2 : 0000000000000008 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 inc_nlink+0x128/0x154 fs/inode.c:387
 inode_inc_link_count include/linux/fs.h:2511 [inline]
 ext2_mkdir+0x54/0x1e4 fs/ext2/namei.c:238
 vfs_mkdir+0x334/0x4e4 fs/namei.c:4036
 do_mkdirat+0x20c/0x610 fs/namei.c:4061
 __do_sys_mkdirat fs/namei.c:4076 [inline]
 __se_sys_mkdirat fs/namei.c:4074 [inline]
 __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4074
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581
irq event stamp: 2544
hardirqs last  enabled at (2543): [<ffff80000896b310>] kasan_quarantine_put+0xdc/0x204 mm/kasan/quarantine.c:242
hardirqs last disabled at (2544): [<ffff8000120e200c>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (2466): [<ffff800008032b74>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (2464): [<ffff800008032b40>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
---[ end trace 0000000000000000 ]---

Crashes (81):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/05/02 15:23 linux-6.1.y ca48fc16c493 52d40fd2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/05/02 11:09 linux-6.1.y ca48fc16c493 52d40fd2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/05/01 06:53 linux-6.1.y ca48fc16c493 62df2017 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/05/01 03:57 linux-6.1.y ca48fc16c493 62df2017 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/28 13:25 linux-6.1.y ca1c9012c941 70a605de .config console log report info ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/28 09:21 linux-6.1.y ca1c9012c941 70a605de .config console log report info ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/27 23:51 linux-6.1.y ca1c9012c941 6f3d6fa7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/27 17:05 linux-6.1.y ca1c9012c941 6f3d6fa7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/27 12:05 linux-6.1.y ca1c9012c941 6f3d6fa7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/27 04:31 linux-6.1.y ca1c9012c941 19a3dabe .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/27 01:39 linux-6.1.y ca1c9012c941 19a3dabe .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/26 20:24 linux-6.1.y ca1c9012c941 8d843721 .config console log report info ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/26 15:44 linux-6.1.y ca1c9012c941 8d843721 .config console log report info ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/26 10:30 linux-6.1.y f17b0ab65d17 8d843721 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/26 00:47 linux-6.1.y f17b0ab65d17 65320f8e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/25 19:20 linux-6.1.y f17b0ab65d17 65320f8e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/25 15:27 linux-6.1.y f17b0ab65d17 65320f8e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/25 07:07 linux-6.1.y f17b0ab65d17 65320f8e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/24 16:45 linux-6.1.y f17b0ab65d17 fdc18293 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/24 14:33 linux-6.1.y f17b0ab65d17 fdc18293 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/24 09:03 linux-6.1.y f17b0ab65d17 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/24 04:33 linux-6.1.y f17b0ab65d17 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/24 02:53 linux-6.1.y f17b0ab65d17 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/24 01:10 linux-6.1.y f17b0ab65d17 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/23 23:38 linux-6.1.y f17b0ab65d17 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/23 19:47 linux-6.1.y f17b0ab65d17 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/23 18:03 linux-6.1.y f17b0ab65d17 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/23 16:01 linux-6.1.y f17b0ab65d17 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/23 14:59 linux-6.1.y f17b0ab65d17 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/23 12:53 linux-6.1.y f17b0ab65d17 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/23 07:05 linux-6.1.y f17b0ab65d17 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/23 03:45 linux-6.1.y f17b0ab65d17 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/22 22:48 linux-6.1.y f17b0ab65d17 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/22 21:37 linux-6.1.y f17b0ab65d17 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/22 14:26 linux-6.1.y f17b0ab65d17 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/22 11:34 linux-6.1.y f17b0ab65d17 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/22 05:37 linux-6.1.y f17b0ab65d17 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/21 09:47 linux-6.1.y f17b0ab65d17 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/21 02:10 linux-6.1.y f17b0ab65d17 2b32bd34 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/20 18:27 linux-6.1.y f17b0ab65d17 a219f34e .config console log report info ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/19 22:58 linux-6.1.y 0102425ac76b a219f34e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/19 22:40 linux-6.1.y 0102425ac76b a219f34e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/13 02:09 linux-6.1.y 543aff194ab6 82d5e53e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/12 23:10 linux-6.1.y 543aff194ab6 82d5e53e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/12 07:48 linux-6.1.y 543aff194ab6 1a1596b6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/11 21:09 linux-6.1.y 543aff194ab6 49faf98d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/11 20:23 linux-6.1.y 543aff194ab6 49faf98d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/11 18:52 linux-6.1.y 543aff194ab6 49faf98d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/11 12:46 linux-6.1.y 543aff194ab6 71147e29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/11 04:31 linux-6.1.y 543aff194ab6 71147e29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/10 16:17 linux-6.1.y 543aff194ab6 71147e29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/10 12:59 linux-6.1.y 543aff194ab6 71147e29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/10 12:07 linux-6.1.y 543aff194ab6 71147e29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/10 11:59 linux-6.1.y 543aff194ab6 71147e29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
2023/04/10 02:26 linux-6.1.y 543aff194ab6 71147e29 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in inc_nlink
* Struck through repros no longer work on HEAD.