syzbot


WARNING in drop_nlink (2)

Status: upstream: reported C repro on 2020/10/13 17:02
Subsystems: hfs
[Documentation on labels]
Reported-by: syzbot+651ca866e5e2b4b5095b@syzkaller.appspotmail.com
First crash: 1242d, last: 65d
Cause bisection: the issue happens on the oldest tested release (bisect log)
Crash: WARNING in sysfs_warn_dup (log)
Repro: C syz .config
  
Fix bisection the fix commit could be any of (bisect log):
  583090b1b823 Merge tag 'block5.9-2020-10-08' of git://git.kernel.dk/linux-block
  9e9fb7655ed5 Merge tag 'net-next-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
  
Discussions (3)
Title Replies (including bot) Last reply
[syzbot] Monthly exfat report (Nov 2023) 2 (3) 2023/11/29 15:48
[PATCH] fs:minix: catch inode->i_nlink == 0 in minix_rename() 1 (1) 2021/04/25 07:48
WARNING in drop_nlink (2) 0 (1) 2020/10/13 17:02
Similar bugs (5)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 WARNING in drop_nlink origin:upstream C 3 19d 270d 0/3 upstream: reported C repro on 2023/06/08 18:04
linux-6.1 WARNING in drop_nlink origin:upstream C 3 32d 266d 0/3 upstream: reported C repro on 2023/06/12 09:27
linux-4.14 WARNING in drop_nlink C 9 364d 705d 0/1 upstream: reported C repro on 2022/03/30 09:01
linux-4.19 WARNING in drop_nlink fat reiserfs C error 25 392d 1243d 0/1 upstream: reported C repro on 2020/10/08 09:54
upstream WARNING in drop_nlink fs C done error 1 1412d 1408d 15/26 fixed on 2020/09/16 22:51
Last patch testing requests (14)
Created Duration User Patch Repo Result
2024/02/19 20:36 41m retest repro upstream OK log
2024/02/19 20:36 19m retest repro upstream OK log
2024/02/19 20:36 20m retest repro upstream OK log
2024/02/19 20:36 19m retest repro upstream OK log
2024/02/19 20:36 19m retest repro upstream OK log
2024/01/14 03:19 23m retest repro linux-next OK log
2024/01/14 03:19 24m retest repro linux-next OK log
2024/01/14 03:19 20m retest repro upstream OK log
2024/01/13 19:24 32m retest repro upstream OK log
2024/01/13 19:24 31m retest repro upstream OK log
2021/04/22 05:18 12m ducheng2@gmail.com patch linux-next report log
2021/04/22 03:42 11m ducheng2@gmail.com patch upstream report log
2021/04/22 03:17 11m ducheng2@gmail.com patch upstream report log
2021/04/20 03:10 22m ducheng2@gmail.com upstream report log
Fix bisection attempts (11)
Created Duration User Patch Repo Result
2021/09/01 14:37 26m bisect fix upstream job log (2)
2021/08/02 06:13 19m bisect fix upstream job log (0) log
2021/07/02 00:41 22m bisect fix upstream job log (0) log
2021/06/01 09:45 22m bisect fix upstream job log (0) log
2021/05/02 09:14 20m bisect fix upstream job log (0) log
2021/04/02 03:21 19m bisect fix upstream job log (0) log
2021/03/01 15:54 21m bisect fix upstream job log (0) log
2021/02/14 23:16 0m bisect fix upstream error job log (0)
2021/01/15 22:59 16m bisect fix upstream job log (0) log
2020/12/16 08:29 16m bisect fix upstream job log (0) log
2020/11/08 22:54 15m bisect fix upstream job log (0) log

Sample crash report:
REISERFS (device loop0): journal params: device loop0, size 512, journal first block 18, max trans len 256, max batch 225, max commit age 30, max trans age 30
REISERFS (device loop0): checking transaction log (loop0)
REISERFS (device loop0): Using r5 hash to sort names
------------[ cut here ]------------
WARNING: CPU: 0 PID: 3072 at fs/inode.c:330 drop_nlink+0x7c/0xac fs/inode.c:330
Modules linked in:
CPU: 0 PID: 3072 Comm: syz-executor176 Not tainted 6.1.0-rc6-syzkaller-32662-g6d464646530f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : drop_nlink+0x7c/0xac fs/inode.c:330
lr : drop_nlink+0x7c/0xac fs/inode.c:330
sp : ffff80000ff4b9c0
x29: ffff80000ff4b9c0 x28: ffff0000cb461800 x27: ffff0000cc325000
x26: 0000000000280202 x25: 0000000000000036 x24: 000000000000fc16
x23: 00000000000041c0 x22: 00000000ffffffff x21: ffff0000c5fcd9c0
x20: 0000000000000000 x19: ffff0000ca960190 x18: 00000000000000c0
x17: ffff80000dda8198 x16: ffff80000dbe6158 x15: ffff0000c6554ec0
x14: 0000000000000000 x13: 00000000ffffffff x12: ffff0000c6554ec0
x11: ff808000085f79c0 x10: 0000000000000000 x9 : ffff8000085f79c0
x8 : ffff0000c6554ec0 x7 : ffff8000095d1704 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000006 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 drop_nlink+0x7c/0xac fs/inode.c:330
 reiserfs_mkdir+0x36c/0x3ec fs/reiserfs/namei.c:848
 xattr_mkdir fs/reiserfs/xattr.c:76 [inline]
 create_privroot fs/reiserfs/xattr.c:882 [inline]
 reiserfs_xattr_init+0x118/0x314 fs/reiserfs/xattr.c:1005
 reiserfs_fill_super+0xe94/0xf94 fs/reiserfs/super.c:2175
 mount_bdev+0x1b8/0x210 fs/super.c:1401
 get_super_block+0x44/0x58 fs/reiserfs/super.c:2601
 legacy_get_tree+0x30/0x74 fs/fs_context.c:610
 vfs_get_tree+0x40/0x140 fs/super.c:1531
 do_new_mount+0x1dc/0x4e4 fs/namespace.c:3040
 path_mount+0x358/0x890 fs/namespace.c:3370
 do_mount fs/namespace.c:3383 [inline]
 __do_sys_mount fs/namespace.c:3591 [inline]
 __se_sys_mount fs/namespace.c:3568 [inline]
 __arm64_sys_mount+0x2c4/0x3c4 fs/namespace.c:3568
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall arch/arm64/kernel/syscall.c:52 [inline]
 el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x48/0x164 arch/arm64/kernel/syscall.c:206
 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584
irq event stamp: 48860
hardirqs last  enabled at (48859): [<ffff8000081eacc4>] call_rcu+0x300/0x494 kernel/rcu/tree.c:2833
hardirqs last disabled at (48860): [<ffff80000c07d8b4>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (44828): [<ffff8000080102e4>] _stext+0x2e4/0x37c
softirqs last disabled at (44823): [<ffff800008017c88>] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
---[ end trace 0000000000000000 ]---
REISERFS warning (device loop0): jdm-20006 create_privroot: xattrs/ACLs enabled and couldn't find/create .reiserfs_priv. Failing mount.

Crashes (120):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2022/11/29 20:45 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 6d464646530f 05dc7993 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-gce-arm64 WARNING in drop_nlink
2023/11/15 03:04 upstream 9bacdd8996c7 cb976f63 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-smack-root WARNING in drop_nlink
2023/09/30 20:55 upstream 9f3ebbef746f 8e26a358 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-smack-root WARNING in drop_nlink
2023/08/16 07:31 upstream 2d7b8c6b90e4 39990d51 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-selinux-root WARNING in drop_nlink
2023/07/25 19:03 upstream 0b5547c51827 6756545c .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-root WARNING in drop_nlink
2023/06/21 18:43 upstream e660abd551f1 09ffe269 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-root WARNING in drop_nlink
2023/06/21 02:24 upstream 99ec1ed7c2ed 79782afc .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in drop_nlink
2023/06/20 19:52 upstream 692b7dc87ca6 09ffe269 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-selinux-root WARNING in drop_nlink
2023/06/20 03:21 upstream 45a3e24f65e9 d521bc56 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-smack-root WARNING in drop_nlink
2023/05/12 19:47 upstream cc3c44c9fda2 ecca8a24 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in drop_nlink
2022/12/28 10:10 upstream 1b929c02afd3 44712fbc .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in drop_nlink
2022/12/19 08:37 upstream f9ff5644bcc0 05494336 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-root WARNING in drop_nlink
2022/11/30 16:10 upstream 01f856ae6d0c 4c2a66e8 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in drop_nlink
2022/11/11 18:08 upstream 4bbf3422df78 3ead01ad .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-kasan-gce-root WARNING in drop_nlink
2022/11/10 10:58 upstream f67dd6ce0723 b2488a87 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in drop_nlink
2022/11/01 16:28 upstream b229b6ca5abb a1d8560a .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in drop_nlink
2022/06/25 07:11 upstream cbe232ab07ab a371c43c .config console log report syz C ci-qemu-upstream WARNING in drop_nlink
2023/09/01 13:42 linux-next a47fc304d2b6 696ea0d2 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root WARNING in drop_nlink
2023/07/31 21:50 linux-next ec8939156379 2a0d0f29 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root WARNING in drop_nlink
2023/03/05 18:53 linux-next 1acf39ef8f14 f8902b57 .config strace log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root WARNING in drop_nlink
2020/10/09 16:56 upstream 583090b1b823 d81b165e .config console log report syz C ci-upstream-kasan-gce-smack-root
2023/11/27 18:11 upstream 2cc14f52aeb7 7ec6c044 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/11/23 19:00 upstream 9b6de136b5f0 fc59b78e .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in drop_nlink
2023/11/15 02:34 upstream 9bacdd8996c7 cb976f63 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in drop_nlink
2023/11/12 10:41 upstream 1b907d050735 6d6dbf8a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/11/09 03:29 upstream 6bc986ab839c 4862372a .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/10/20 17:23 upstream ce55c22ec8b2 361b23dc .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/10/14 19:33 upstream 70f8c6f8f880 f757a323 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/10/10 10:01 upstream 94f6f0550c62 c9be5398 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/09/07 02:21 upstream 744a759492b5 72324844 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/12/16 15:07 upstream c8e97fc6b4c0 3222d10c .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in drop_nlink
2023/08/25 17:15 upstream 4f9e7fabf864 03d9c195 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/08/14 08:30 upstream 2ccdd1b13c59 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/08/14 01:48 upstream 2ccdd1b13c59 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/08/13 21:15 upstream a785fd28d31f 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/08/12 03:02 upstream 9106536c1aa3 39990d51 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/07/23 01:09 upstream 295e1388de2d 27cbe77f .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/07/17 06:36 upstream 20edcec23f92 35d9ecc5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/07/04 23:05 upstream 24be4d0b46bb f99c2404 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/06/23 00:06 upstream dad9774deaf1 79782afc .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/06/21 20:15 upstream e660abd551f1 79782afc .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/06/17 16:53 upstream 1639fae5132b f3921d4d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/06/16 21:47 upstream 40f71e7cd3c6 f3921d4d .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream WARNING in drop_nlink
2023/06/14 20:12 upstream b6dad5178cea d2ee9228 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/06/12 05:49 upstream 4c605260bc60 49519f06 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/06/11 19:40 upstream 4c605260bc60 49519f06 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/06/10 15:00 upstream 64569520920a 49519f06 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/06/07 12:05 upstream a4d7d7011219 a4ae4f42 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/06/06 01:57 upstream f8dba31b0a82 a4ae4f42 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/06/05 00:28 upstream 9561de3a55be a4ae4f42 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/06/03 19:37 upstream 51f269a6ecc7 a4ae4f42 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/06/02 09:59 upstream 1874a42a7d74 a4ae4f42 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/06/01 18:54 upstream 929ed21dfdb6 babc4389 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/06/01 06:01 upstream 48b1320a674e babc4389 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/05/31 23:28 upstream 48b1320a674e babc4389 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/05/27 19:36 upstream 49572d536129 cf184559 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/05/20 21:28 upstream d635f6cc934b 4bce1a3e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/05/19 16:01 upstream 2d1bcbc6cd70 3bb7af1d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-root WARNING in drop_nlink
2023/05/17 11:34 upstream f1fcbaa18b28 eaac4681 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in drop_nlink
2023/06/22 21:51 upstream dad9774deaf1 79782afc .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu-upstream-386 WARNING in drop_nlink
2023/09/28 10:47 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf6547d8715b c2ab1e5d .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in drop_nlink
2023/09/28 05:05 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf6547d8715b 2895a507 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in drop_nlink
2023/09/27 17:49 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf6547d8715b 2895a507 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in drop_nlink
2023/09/27 11:40 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf6547d8715b 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in drop_nlink
2023/09/26 19:02 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf6547d8715b 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in drop_nlink
2023/09/25 20:54 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf6547d8715b 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in drop_nlink
2023/09/25 19:11 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci bf6547d8715b 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in drop_nlink
2023/09/25 16:52 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe4469582053 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in drop_nlink
2023/09/25 15:26 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe4469582053 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in drop_nlink
2023/09/25 07:56 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe4469582053 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in drop_nlink
2023/09/23 23:57 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe4469582053 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in drop_nlink
2023/09/23 21:28 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci fe4469582053 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in drop_nlink
2023/07/04 14:11 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci e40939bbfc68 6e553898 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in drop_nlink
* Struck through repros no longer work on HEAD.