syzbot


WARNING in chown_common

Status: moderation: reported on 2024/04/15 18:21
Subsystems: fs
[Documentation on labels]
Reported-by: syzbot+e6005053130d288e3ad7@syzkaller.appspotmail.com
First crash: 36d, last: 1d09h
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 WARNING in chown_common 3 12d 38d 0/3 upstream: reported on 2024/04/09 23:34

Sample crash report:
------------[ cut here ]------------
DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff88823bdf2aa8, owner = 0x0, curr 0xffff888021ba1e00, list empty
WARNING: CPU: 0 PID: 14856 at kernel/locking/rwsem.c:1369 __up_write kernel/locking/rwsem.c:1369 [inline]
WARNING: CPU: 0 PID: 14856 at kernel/locking/rwsem.c:1369 up_write+0x469/0x520 kernel/locking/rwsem.c:1632
Modules linked in:
CPU: 0 PID: 14856 Comm: syz-executor.3 Not tainted 6.9.0-syzkaller-08284-gea5f6ad9ad96 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:__up_write kernel/locking/rwsem.c:1369 [inline]
RIP: 0010:up_write+0x469/0x520 kernel/locking/rwsem.c:1632
Code: ea 03 80 3c 02 00 75 53 48 8b 13 4d 89 f1 41 55 4d 89 f8 4c 89 e1 48 c7 c6 a0 a1 2c 8b 48 c7 c7 c0 a0 2c 8b e8 08 78 e5 ff 90 <0f> 0b 90 90 5a e9 96 fc ff ff 48 89 ef e8 f5 14 7f 00 e9 03 fd ff
RSP: 0018:ffffc9000332fcb0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff88823bdf2aa8 RCX: ffffc9000f158000
RDX: 0000000000040000 RSI: ffffffff814ff326 RDI: 0000000000000001
RBP: ffff88823bdf2ab0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: ffff88823bdf2aa8
R13: ffffffff8b2ca000 R14: ffff888021ba1e00 R15: 0000000000000000
FS:  00007f78b19e86c0(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc9f2fb028 CR3: 0000000029e98000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inode_unlock include/linux/fs.h:796 [inline]
 chown_common+0x3d8/0x660 fs/open.c:792
 do_fchownat+0x1af/0x210 fs/open.c:821
 __do_sys_lchown fs/open.c:846 [inline]
 __se_sys_lchown fs/open.c:844 [inline]
 __x64_sys_lchown+0x7e/0xc0 fs/open.c:844
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f78b0c7cee9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f78b19e80c8 EFLAGS: 00000246 ORIG_RAX: 000000000000005e
RAX: ffffffffffffffda RBX: 00007f78b0dac1f0 RCX: 00007f78b0c7cee9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040
RBP: 00007f78b0cc949e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f78b0dac1f0 R15: 00007fff89a21348
 </TASK>

Crashes (12):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/05/17 07:20 upstream ea5f6ad9ad96 c2e07261 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-selinux-root WARNING in chown_common
2024/05/16 14:38 upstream 3c999d1ae3c7 ef5d53ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in chown_common
2024/05/11 18:39 upstream cf87f46fd34d 9026e142 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in chown_common
2024/05/09 23:45 upstream 448b3fe5a0ea 05079661 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in chown_common
2024/05/09 18:00 upstream 45db3ab70092 de979bc2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in chown_common
2024/05/09 17:45 upstream 45db3ab70092 de979bc2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in chown_common
2024/05/08 20:26 upstream 6d7ddd805123 20bf80e1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in chown_common
2024/04/23 08:13 upstream 4d2008430ce8 21339d7b .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-kasan-gce-smack-root WARNING in chown_common
2024/05/10 09:51 linux-next 75fa778d74b7 de979bc2 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in chown_common
2024/05/05 14:44 linux-next 9221b2819b8a 610f2a54 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in chown_common
2024/04/22 14:18 linux-next 7b4f2bc91c15 af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in chown_common
2024/04/11 18:15 linux-next 4118d9533ff3 478efa7f .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in chown_common
* Struck through repros no longer work on HEAD.