syzbot |
sign-in | mailing list | source | docs |
| Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
|---|---|---|---|---|---|---|---|---|---|
| linux-4.19 | INFO: task hung in prealloc_shrinker | 2 | 1737d | 1791d | 0/1 | auto-closed as invalid on 2020/08/25 18:04 | |||
| linux-4.19 | INFO: task hung in prealloc_shrinker (2) | 1 | 749d | 749d | 0/1 | upstream: reported on 2023/01/10 08:42 |
INFO: task syz-executor.2:3730 blocked for more than 143 seconds.
Not tainted 5.15.0-rc4-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:26184 pid: 3730 ppid: 10389 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4940 [inline]
__schedule+0x940/0x26f0 kernel/sched/core.c:6287
schedule+0xd3/0x270 kernel/sched/core.c:6366
rwsem_down_write_slowpath+0x7b9/0x11d0 kernel/locking/rwsem.c:1107
__down_write_common kernel/locking/rwsem.c:1262 [inline]
__down_write_common kernel/locking/rwsem.c:1259 [inline]
__down_write kernel/locking/rwsem.c:1271 [inline]
down_write+0x137/0x150 kernel/locking/rwsem.c:1518
prealloc_memcg_shrinker mm/vmscan.c:359 [inline]
prealloc_shrinker+0x13d/0x7c0 mm/vmscan.c:620
alloc_super+0x84c/0xab0 fs/super.c:270
sget_fc+0x13e/0x7c0 fs/super.c:531
vfs_get_super fs/super.c:1135 [inline]
get_tree_keyed+0x55/0x200 fs/super.c:1196
vfs_get_tree+0x89/0x2f0 fs/super.c:1498
fc_mount+0x13/0xc0 fs/namespace.c:994
mq_create_mount ipc/mqueue.c:473 [inline]
mq_init_ns+0x414/0x600 ipc/mqueue.c:1689
create_ipc_ns ipc/namespace.c:58 [inline]
copy_ipcs+0x36f/0x570 ipc/namespace.c:84
create_new_namespaces+0x210/0xb20 kernel/nsproxy.c:90
copy_namespaces+0x391/0x450 kernel/nsproxy.c:178
copy_process+0x2da7/0x7580 kernel/fork.c:2197
kernel_clone+0xe7/0xac0 kernel/fork.c:2584
__do_sys_clone+0xc8/0x110 kernel/fork.c:2701
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021/10/07 14:11 | upstream | 5af4055fa813 | 62ee0987 | .config | console log | report | info | ci-upstream-kasan-gce-root | INFO: task hung in prealloc_shrinker | |||
| 2021/10/14 05:17 | linux-next | 8006b911c90a | 5462d470 | .config | console log | report | info | ci-upstream-linux-next-kasan-gce-root | INFO: task can't die in prealloc_shrinker |