syzbot


WARNING in do_symlinkat

Status: auto-obsoleted due to no activity on 2024/01/17 15:16
Reported-by: syzbot+491f9582eac6729ab880@syzkaller.appspotmail.com
First crash: 405d, last: 374d
Similar bugs (5)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 WARNING in do_symlinkat (2) origin:lts-only syz inconclusive 4 334d 381d 0/3 auto-obsoleted due to no activity on 2024/10/05 04:07
linux-6.1 WARNING in do_symlinkat (2) 3 42d 105d 0/3 upstream: reported on 2024/07/04 06:01
linux-5.15 WARNING in do_symlinkat 1 505d 505d 0/3 auto-obsoleted due to no activity on 2023/09/09 00:28
upstream WARNING in do_symlinkat ntfs3 C error done 66 501d 666d 22/28 fixed on 2023/06/08 14:41
upstream WARNING in do_symlinkat (2) ntfs3 C error unreliable 27 6d20h 425d 0/28 upstream: reported C repro on 2023/08/19 10:47

Sample crash report:
------------[ cut here ]------------
DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff0000e1c7dbb0, owner = 0x0, curr 0xffff0000de5a5340, list empty
WARNING: CPU: 0 PID: 11232 at kernel/locking/rwsem.c:1372 __up_write kernel/locking/rwsem.c:1371 [inline]
WARNING: CPU: 0 PID: 11232 at kernel/locking/rwsem.c:1372 up_write+0x5c4/0x76c kernel/locking/rwsem.c:1626
Modules linked in:
CPU: 0 PID: 11232 Comm: syz-executor.3 Not tainted 6.1.56-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __up_write kernel/locking/rwsem.c:1371 [inline]
pc : up_write+0x5c4/0x76c kernel/locking/rwsem.c:1626
lr : __up_write kernel/locking/rwsem.c:1371 [inline]
lr : up_write+0x5c4/0x76c kernel/locking/rwsem.c:1626
sp : ffff80001faa7b80
x29: ffff80001faa7c00 x28: 1ffff00003f54f90 x27: 1fffe0001c38fb83
x26: dfff800000000000 x25: 1fffe0001c38fb77 x24: ffff0000e1c7dc08
x23: 0000000000000000 x22: 0000000000000000 x21: ffff0000de5a5340
x20: ffff0000e1c7dbb0 x19: ffff0000e1c7dbb0 x18: 1fffe000368a9f76
x17: ffff8000158ad000 x16: ffff800008306258 x15: ffff0001b454fbbc
x14: 1ffff00002b160b0 x13: dfff800000000000 x12: 0000000000000003
x11: ff8080000aad5608 x10: 0000000000000003 x9 : 4d79cbd42b1d4c00
x8 : 4d79cbd42b1d4c00 x7 : ffff80000827db20 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000007 x1 : ffff80001227c340 x0 : ffff80019ed4e000
Call trace:
 __up_write kernel/locking/rwsem.c:1371 [inline]
 up_write+0x5c4/0x76c kernel/locking/rwsem.c:1626
 inode_unlock include/linux/fs.h:761 [inline]
 done_path_create fs/namei.c:3857 [inline]
 do_symlinkat+0x3b4/0x6b0 fs/namei.c:4433
 __do_sys_symlinkat fs/namei.c:4447 [inline]
 __se_sys_symlinkat fs/namei.c:4444 [inline]
 __arm64_sys_symlinkat+0xa4/0xbc fs/namei.c:4444
 __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: 786
hardirqs last  enabled at (785): [<ffff80000827dbc0>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1366 [inline]
hardirqs last  enabled at (785): [<ffff80000827dbc0>] finish_lock_switch+0xbc/0x1e8 kernel/sched/core.c:5000
hardirqs last disabled at (786): [<ffff8000121222a4>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (538): [<ffff800008020d74>] softirq_handle_end kernel/softirq.c:414 [inline]
softirqs last  enabled at (538): [<ffff800008020d74>] __do_softirq+0xc14/0xea0 kernel/softirq.c:600
softirqs last disabled at (429): [<ffff80000802a994>] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:79
---[ end trace 0000000000000000 ]---

Crashes (2):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/10/09 15:15 linux-6.1.y ecda77b46871 3c53c7d9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in do_symlinkat
2023/09/08 17:04 linux-6.1.y 59b13c2b647e 6654cf89 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in do_symlinkat
* Struck through repros no longer work on HEAD.