INFO: task syz.5.1013:10155 blocked for more than 142 seconds.
Not tainted 6.13.0-rc1-next-20241205-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.1013 state:D stack:23256 pid:10155 tgid:10153 ppid:7759 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5371 [inline]
__schedule+0x189f/0x4c80 kernel/sched/core.c:6758
__schedule_loop kernel/sched/core.c:6835 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6850
bit_wait+0x12/0xd0 kernel/sched/wait_bit.c:237
__wait_on_bit+0xb0/0x2f0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x1d5/0x260 kernel/sched/wait_bit.c:64
wait_on_bit include/linux/wait_bit.h:77 [inline]
netfs_dispatch_unbuffered_reads fs/netfs/direct_read.c:107 [inline]
netfs_unbuffered_read fs/netfs/direct_read.c:146 [inline]
netfs_unbuffered_read_iter_locked+0xd83/0x1540 fs/netfs/direct_read.c:231
netfs_unbuffered_read_iter+0xbf/0xe0 fs/netfs/direct_read.c:266
new_sync_read fs/read_write.c:484 [inline]
vfs_read+0x991/0xb70 fs/read_write.c:565
ksys_read+0x18f/0x2b0 fs/read_write.c:708
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdfcb37ff19
RSP: 002b:00007fdfcc0d9058 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007fdfcb545fa0 RCX: 00007fdfcb37ff19
RDX: 0000000000002020 RSI: 000000002001b640 RDI: 0000000000000006
RBP: 00007fdfcb3f3986 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fdfcb545fa0 R15: 00007ffcc11bd618
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e9374a0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e9374a0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e9374a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6744
3 locks held by kworker/u8:5/78:
2 locks held by getty/5600:
#0: ffff888031ddf0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002fde2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
2 locks held by syz.5.1013/10155:
#0: ffff88802f9e09b8 (&f->f_pos_lock){+.+.}-{4:4}, at: fdget_pos+0x254/0x320 fs/file.c:1191
#1: ffff88807a6c07b8 (&sb->s_type->i_mutex_key#39){++++}-{4:4}, at: netfs_start_io_direct+0x1d4/0x210 fs/netfs/locking.c:188
1 lock held by syz.4.1631/12619:
#0: ffff8880538b0888 (&sb->s_type->i_mutex_key#26){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:830 [inline]
#0: ffff8880538b0888 (&sb->s_type->i_mutex_key#26){+.+.}-{4:4}, at: fuse_flush+0x283/0x980 fs/fuse/file.c:535
2 locks held by syz.9.1635/12638:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc1-next-20241205-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:234 [inline]
watchdog+0xff6/0x1040 kernel/hung_task.c:397
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 2994 Comm: kworker/u8:7 Not tainted 6.13.0-rc1-next-20241205-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:raw_atomic64_read include/linux/atomic/atomic-arch-fallback.h:2583 [inline]
RIP: 0010:raw_atomic_long_read include/linux/atomic/atomic-long.h:38 [inline]
RIP: 0010:atomic_long_read include/linux/atomic/atomic-instrumented.h:3189 [inline]
RIP: 0010:__mutex_trylock_common+0xac/0x2e0 kernel/locking/mutex.c:82
Code: 00 48 89 44 24 18 be 08 00 00 00 e8 ae 00 8c 00 4c 89 e0 48 c1 e8 03 42 80 3c 30 00 74 08 4c 89 e7 e8 28 fe 8b 00 49 8b 1c 24 <4d> 89 fd 49 c1 ed 03 48 c7 c0 80 99 3b 9a 48 c1 e8 03 48 89 44 24
RSP: 0018:ffffc9000c2578e0 EFLAGS: 00000246
RAX: 1ffff11004fc80e0 RBX: 0000000000000000 RCX: ffffffff8179b752
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888027e40700
RBP: ffffc9000c2579b0 R08: ffff888027e40707 R09: 1ffff11004fc80e0
R10: dffffc0000000000 R11: ffffed1004fc80e1 R12: ffff888027e40700
R13: 0000000000000000 R14: dffffc0000000000 R15: ffffc9000c257940
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c2ede97 CR3: 000000000e736000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__mutex_trylock kernel/locking/mutex.c:127 [inline]
__mutex_lock_common kernel/locking/mutex.c:588 [inline]
__mutex_lock+0x1c7/0xee0 kernel/locking/mutex.c:735
class_wiphy_constructor include/net/cfg80211.h:6034 [inline]
cfg80211_wiphy_work+0xcf/0x490 net/wireless/core.c:424
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244