syzbot


WARNING in vfs_utimes

Status: auto-obsoleted due to no activity on 2023/12/27 15:11
Subsystems: gfs2
[Documentation on labels]
Reported-by: syzbot+0c64a8706d587f73409e@syzkaller.appspotmail.com
First crash: 303d, last: 303d
Discussions (2)
Title Replies (including bot) Last reply
Re: [syzbot] [gfs2] WARNING in vfs_utimes 4 (4) 2023/12/13 15:10
[syzbot] [gfs2] WARNING in vfs_utimes 0 (1) 2023/12/11 11:58
Similar bugs (1)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in vfs_utimes (2) fs 10 18d 74d 0/27 moderation: reported on 2024/04/30 22:51

Sample crash report:
------------[ cut here ]------------
DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x1, magic = 0xffff8880371ddef0, owner = 0xffff88801d773b80, curr 0xffff888023728000, list empty
WARNING: CPU: 0 PID: 13147 at kernel/locking/rwsem.c:1370 __up_write kernel/locking/rwsem.c:1369 [inline]
WARNING: CPU: 0 PID: 13147 at kernel/locking/rwsem.c:1370 up_write+0x4f4/0x580 kernel/locking/rwsem.c:1626
Modules linked in:
CPU: 0 PID: 13147 Comm: syz-executor.1 Not tainted 6.6.0-rc1-syzkaller-00072-gaed8aee11130 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
RIP: 0010:__up_write kernel/locking/rwsem.c:1369 [inline]
RIP: 0010:up_write+0x4f4/0x580 kernel/locking/rwsem.c:1626
Code: 48 c7 c7 a0 98 0a 8b 48 c7 c6 e0 9a 0a 8b 48 8b 54 24 28 48 8b 4c 24 18 4d 89 e0 4c 8b 4c 24 30 53 e8 b0 12 e8 ff 48 83 c4 08 <0f> 0b e9 75 fd ff ff 48 c7 c1 10 9b 9a 8e 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc9001520fbe0 EFLAGS: 00010292
RAX: 144e8f9151b91a00 RBX: ffffffff8b0a9980 RCX: ffff888023728000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9001520fcb0 R08: ffffffff81542432 R09: 1ffff92002a41ee8
R10: dffffc0000000000 R11: fffff52002a41ee9 R12: ffff88801d773b80
R13: ffff8880371ddef0 R14: 1ffff92002a41f84 R15: dffffc0000000000
FS:  00007fadafbfe6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f527c5b8000 CR3: 000000001c7cb000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inode_unlock include/linux/fs.h:807 [inline]
 vfs_utimes+0x4c2/0x760 fs/utimes.c:68
 do_utimes_path fs/utimes.c:99 [inline]
 do_utimes fs/utimes.c:145 [inline]
 __do_sys_utime fs/utimes.c:226 [inline]
 __se_sys_utime+0x1e1/0x2e0 fs/utimes.c:215
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fadb847cae9
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:00007fadafbfe0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000084
RAX: ffffffffffffffda RBX: 00007fadb859c050 RCX: 00007fadb847cae9
RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000020000080
RBP: 00007fadb84c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fadb859c050 R15: 00007ffca2821ba8
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/09/14 17:33 upstream aed8aee11130 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in vfs_utimes
* Struck through repros no longer work on HEAD.