INFO: task syz-executor.0:9228 blocked for more than 143 seconds.
Not tainted 6.0.0-rc2-syzkaller-00283-g10d4879f9ef0 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:25528 pid: 9228 ppid: 3642 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5182 [inline]
__schedule+0x957/0xe20 kernel/sched/core.c:6494
schedule+0xcb/0x190 kernel/sched/core.c:6570
io_schedule+0x83/0x100 kernel/sched/core.c:8714
folio_wait_bit_common+0x98a/0x14b0 mm/filemap.c:1298
__unmap_and_move+0x368/0x12b0 mm/migrate.c:1009
unmap_and_move+0x349/0xe10 mm/migrate.c:1162
migrate_pages+0x4c5/0xef0 mm/migrate.c:1441
compact_zone+0x28c9/0x37e0 mm/compaction.c:2416
compact_node+0x279/0x610 mm/compaction.c:2698
compact_nodes mm/compaction.c:2714 [inline]
sysctl_compaction_handler+0xa8/0x140 mm/compaction.c:2756
proc_sys_call_handler+0x561/0x880 fs/proc/proc_sysctl.c:611
call_write_iter include/linux/fs.h:2187 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x7b5/0xbb0 fs/read_write.c:578
ksys_write+0x19b/0x2c0 fs/read_write.c:631
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f1c4ec89279
RSP: 002b:00007f1c4fe3b168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f1c4ed9bf80 RCX: 00007f1c4ec89279
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f1c4ece3189 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcf9eba87f R14: 00007f1c4fe3b300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8cd20970 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8cd21170 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
3 locks held by kworker/1:1/26:
#0: ffff888012eaad38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc90000a1fd00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffff888147a5b190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#2: ffff888147a5b190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1bb/0xd80 drivers/usb/core/hub.c:5681
1 lock held by khungtaskd/28:
#0: ffffffff8cd207a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
3 locks held by kworker/u4:5/1203:
2 locks held by getty/3286:
#0: ffff8880276ca098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc90002d232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6e8/0x1e50 drivers/tty/n_tty.c:2177
1 lock held by syz-executor.5/3644:
#0: ffff8880b9a39c18 (&rq->__lock){-.-.}-{2:2}, at: debug_object_free+0x6b/0x460 lib/debugobjects.c:834
1 lock held by syz-executor.1/8843:
1 lock held by syz-executor.3/8937:
2 locks held by syz-executor.0/9228:
#0: ffff88806d57ed68 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x242/0x2e0 fs/file.c:1036
#1: ffff88807747a460 (sb_writers#3){.+.+}-{0:0}, at: vfs_write+0x275/0xbb0 fs/read_write.c:574
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.0.0-rc2-syzkaller-00283-g10d4879f9ef0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x47c/0x4b0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x169/0x280 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xcd5/0xd20 kernel/hung_task.c:369
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3645 Comm: syz-executor.2 Not tainted 6.0.0-rc2-syzkaller-00283-g10d4879f9ef0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
RIP: 0010:__lock_acquire+0x6f/0x1f60 kernel/locking/lockdep.c:4923
Code: 10 84 c0 0f 85 62 16 00 00 83 3d 3f 52 bc 0c 00 0f 84 13 15 00 00 83 3d fe 92 55 0b 00 74 2c 4c 89 e8 48 c1 e8 03 80 3c 10 00 <74> 12 4c 89 ef e8 27 f2 73 00 48 ba 00 00 00 00 00 fc ff df 48 c7
RSP: 0018:ffffc90003a7f868 EFLAGS: 00000046
RAX: 1ffff11017347383 RBX: 0000000000000000 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff8880b9a39c18
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: fffffbfff1c4ae36 R11: 1ffffffff1c4ae35 R12: 0000000000000001
R13: ffff8880b9a39c18 R14: 0000000000000001 R15: 0000000000000000
FS: 00005555558f9400(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555572cc848 CR3: 00000000307a1000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5666
_raw_spin_lock_nested+0x2d/0x40 kernel/locking/spinlock.c:378
raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:544
raw_spin_rq_lock kernel/sched/sched.h:1355 [inline]
rq_lock kernel/sched/sched.h:1653 [inline]
__schedule+0x19f/0xe20 kernel/sched/core.c:6411
schedule+0xcb/0x190 kernel/sched/core.c:6570
freezable_schedule include/linux/freezer.h:172 [inline]
do_nanosleep+0x1c0/0x7d0 kernel/time/hrtimer.c:2044
hrtimer_nanosleep+0x24d/0x490 kernel/time/hrtimer.c:2097
__do_sys_clock_nanosleep kernel/time/posix-timers.c:1276 [inline]
__se_sys_clock_nanosleep kernel/time/posix-timers.c:1254 [inline]
__x64_sys_clock_nanosleep+0x360/0x3f0 kernel/time/posix-timers.c:1254
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f80424adfa1
Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 aa e7 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 8b 74 24 0c 8b 3c 24 b8 e6 00 00 00 0f 05 <44> 89 c7 48 89 04 24 e8 e3 e7 ff ff 48 8b 04 24 eb 97 66 2e 0f 1f
RSP: 002b:00007ffd17360e00 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 000000000000057c RCX: 00007f80424adfa1
RDX: 00007ffd17360e40 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffd17360ecc R08: 0000000000000000 R09: 0000000000000010
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032
R13: 000000000009e797 R14: 0000000000000000 R15: 00007ffd17360f30