syzbot


WARNING in do_symlinkat (2)

Status: upstream: reported on 2024/07/04 06:01
Reported-by: syzbot+0a3ae7030de895fe7254@syzkaller.appspotmail.com
First crash: 126d, last: 19d
Similar bugs (5)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 WARNING in do_symlinkat 2 394d 425d 0/3 auto-obsoleted due to no activity on 2024/01/17 15:16
linux-5.15 WARNING in do_symlinkat (2) origin:lts-only syz inconclusive 4 354d 401d 0/3 auto-obsoleted due to no activity on 2024/10/05 04:07
linux-5.15 WARNING in do_symlinkat 1 525d 525d 0/3 auto-obsoleted due to no activity on 2023/09/09 00:28
upstream WARNING in do_symlinkat ntfs3 C error done 66 522d 686d 22/28 fixed on 2023/06/08 14:41
upstream WARNING in do_symlinkat (2) ntfs3 C error unreliable 27 27d 446d 0/28 upstream: reported C repro on 2023/08/19 10:47

Sample crash report:
DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff888071cf1950, owner = 0x0, curr 0xffff88802e829dc0, list empty
WARNING: CPU: 0 PID: 4200 at kernel/locking/rwsem.c:1372 __up_write kernel/locking/rwsem.c:1371 [inline]
WARNING: CPU: 0 PID: 4200 at kernel/locking/rwsem.c:1372 up_write+0x4f5/0x580 kernel/locking/rwsem.c:1626
Modules linked in:
CPU: 0 PID: 4200 Comm: syz.1.110 Not tainted 6.1.113-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:__up_write kernel/locking/rwsem.c:1371 [inline]
RIP: 0010:up_write+0x4f5/0x580 kernel/locking/rwsem.c:1626
Code: 48 c7 c7 60 f6 0b 8b 48 c7 c6 a0 f8 0b 8b 48 8b 54 24 28 48 8b 4c 24 18 4d 89 e0 4c 8b 4c 24 30 53 e8 1f c3 e8 ff 48 83 c4 08 <0f> 0b e9 71 fd ff ff 48 c7 c1 68 37 9a 8e 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc9000352fd20 EFLAGS: 00010292
RAX: 82b8e14eccacbd00 RBX: ffffffff8b0bf740 RCX: 0000000000040000
RDX: ffffc90005c02000 RSI: 000000000001ed69 RDI: 000000000001ed6a
RBP: ffffc9000352fdf0 R08: ffffffff8152afae R09: fffff520006a5f45
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: ffff888071cf1950 R14: 1ffff920006a5fac R15: dffffc0000000000
FS:  00007f5d150e56c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0605c6b000 CR3: 0000000078782000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inode_unlock include/linux/fs.h:763 [inline]
 done_path_create fs/namei.c:3927 [inline]
 do_symlinkat+0x280/0x390 fs/namei.c:4503
 __do_sys_symlink fs/namei.c:4522 [inline]
 __se_sys_symlink fs/namei.c:4520 [inline]
 __x64_sys_symlink+0x7a/0x90 fs/namei.c:4520
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f5d1437dff9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f5d150e5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000058
RAX: ffffffffffffffda RBX: 00007f5d14536058 RCX: 00007f5d1437dff9
RDX: 0000000000000000 RSI: 0000000020000cc0 RDI: 0000000020000dc0
RBP: 00007f5d143f0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f5d14536058 R15: 00007ffeb858a168
 </TASK>

Crashes (4):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/10/19 06:21 linux-6.1.y 54d90d17e8ce cd6fc0a3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in do_symlinkat
2024/09/05 05:26 linux-6.1.y 699506173494 dfbe2ed4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in do_symlinkat
2024/07/06 11:35 linux-6.1.y 7753af06eebf 2a40360c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in do_symlinkat
2024/07/04 06:00 linux-6.1.y 99e6a620de00 f76a75f3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in do_symlinkat
* Struck through repros no longer work on HEAD.