INFO: task hung in lock_rename

Status: auto-closed as invalid on 2022/05/08 10:15
Reported-by: syzbot+cdc73eca7982e5d60038@syzkaller.appspotmail.com
First crash: 1678d, last: 1678d
▶ ▼ Similar bugs (10)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in lock_rename (3) fs 1 1 1865d 1865d 0/29 auto-closed as invalid on 2021/10/02 18:08
linux-5.15 INFO: task hung in lock_rename 1 2 1200d 1231d 0/3 auto-obsoleted due to no activity on 2023/08/23 09:02
upstream INFO: task hung in lock_rename exfat 1 53 2812d 2946d 0/29 auto-closed as invalid on 2019/05/30 13:09
linux-6.1 INFO: task hung in lock_rename 1 3 1055d 1169d 0/3 auto-obsoleted due to no activity on 2024/01/01 05:54
upstream INFO: task hung in lock_rename (4) fs 1 3 1654d 1748d 0/29 closed as invalid on 2022/02/08 09:40
upstream INFO: task hung in lock_rename (5) fs 1 2 1610d 1639d 0/29 auto-closed as invalid on 2022/06/15 04:15
upstream INFO: task hung in lock_rename (2) fs 1 7 2016d 2040d 0/29 auto-closed as invalid on 2021/05/17 09:31
linux-4.14 INFO: task hung in lock_rename 1 1 1523d 1523d 0/1 auto-obsoleted due to no activity on 2022/10/10 13:20
android-49 INFO: task hung in lock_rename 1 syz, C 9 2907d 2678d 0/3 public: reported C repro on 2019/04/14 00:00
upstream INFO: task hung in lock_rename (6) ext4 1 18 1201d 1450d 0/29 auto-obsoleted due to no activity on 2023/07/28 16:10

Sample crash report:
EXT4-fs (loop1): Unsupported filesystem blocksize 0 (94 log_block_size)
ieee802154 phy0 wpan0: encryption failed: -22
ieee802154 phy1 wpan1: encryption failed: -22
ieee802154 phy0 wpan0: encryption failed: -22
ieee802154 phy1 wpan1: encryption failed: -22
INFO: task syz-executor.2:6120 blocked for more than 140 seconds.
      Not tainted 4.19.211-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.2  D30080  6120  31888 0x00000004
Call Trace:
 context_switch kernel/sched/core.c:2828 [inline]
 __schedule+0x887/0x2040 kernel/sched/core.c:3517
 schedule+0x8d/0x1b0 kernel/sched/core.c:3561
 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline]
 rwsem_down_write_failed+0x3aa/0x760 kernel/locking/rwsem-xadd.c:618
 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117
 __down_write arch/x86/include/asm/rwsem.h:142 [inline]
 down_write_nested+0x51/0x90 kernel/locking/rwsem.c:194
 inode_lock_nested include/linux/fs.h:783 [inline]
 lock_rename+0x225/0x280 fs/namei.c:2863
 do_renameat2+0x689/0xc70 fs/namei.c:4579
 __do_sys_rename fs/namei.c:4675 [inline]
 __se_sys_rename fs/namei.c:4673 [inline]
 __x64_sys_rename+0x5d/0x80 fs/namei.c:4673
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f1db85cfe99
Code: Bad RIP value.
RSP: 002b:00007f1db6f24168 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f1db86e3030 RCX: 00007f1db85cfe99

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2022/01/08 10:14 linux-4.19.y 3f8a27f9e27b 2ca0d385 .config console log report info ci2-linux-4-19 INFO: task hung in lock_rename
* Struck through repros no longer work on HEAD.