INFO: task syz.3.3651:18743 blocked for more than 143 seconds.
Not tainted 6.1.123-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.3651 state:D stack:28168 pid:18743 ppid:14835 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5241 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6558
schedule+0xbf/0x180 kernel/sched/core.c:6634
d_wait_lookup fs/dcache.c:2632 [inline]
d_alloc_parallel+0xbd5/0x1590 fs/dcache.c:2714
__lookup_slow+0x113/0x3d0 fs/namei.c:1675
lookup_slow+0x53/0x70 fs/namei.c:1707
walk_component+0x2d0/0x400 fs/namei.c:1998
lookup_last fs/namei.c:2455 [inline]
path_lookupat+0x16f/0x450 fs/namei.c:2479
filename_lookup+0x251/0x600 fs/namei.c:2508
user_path_at_empty+0x3e/0x60 fs/namei.c:2905
user_path_at include/linux/namei.h:57 [inline]
__do_sys_chdir fs/open.c:514 [inline]
__se_sys_chdir+0xbb/0x220 fs/open.c:508
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fd302b85d29
RSP: 002b:00007fd303a56038 EFLAGS: 00000246 ORIG_RAX: 0000000000000050
RAX: ffffffffffffffda RBX: 00007fd302d76080 RCX: 00007fd302b85d29
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000240
RBP: 00007fd302c01b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fd302d76080 R15: 00007ffe1cdb94d8
INFO: task syz.3.3651:18745 blocked for more than 144 seconds.
Not tainted 6.1.123-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.3651 state:D stack:28432 pid:18745 ppid:14835 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5241 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6558
schedule+0xbf/0x180 kernel/sched/core.c:6634
rwsem_down_write_slowpath+0xea1/0x14b0 kernel/locking/rwsem.c:1189
inode_lock_nested include/linux/fs.h:793 [inline]
filename_create+0x25c/0x530 fs/namei.c:3876
do_mknodat+0x18b/0x5a0 fs/namei.c:4022
__do_sys_mknod fs/namei.c:4068 [inline]
__se_sys_mknod fs/namei.c:4066 [inline]
__x64_sys_mknod+0x8a/0xa0 fs/namei.c:4066
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fd302b85d29
RSP: 002b:00007fd303a35038 EFLAGS: 00000246 ORIG_RAX: 0000000000000085
RAX: ffffffffffffffda RBX: 00007fd302d76160 RCX: 00007fd302b85d29
RDX: 0000000000000707 RSI: 0000000000000000 RDI: 0000000020000000
RBP: 00007fd302c01b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fd302d76160 R15: 00007ffe1cdb94d8
INFO: task syz.3.3651:18748 blocked for more than 145 seconds.
Not tainted 6.1.123-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.3651 state:D stack:27680 pid:18748 ppid:14835 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5241 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6558
schedule+0xbf/0x180 kernel/sched/core.c:6634
rwsem_down_write_slowpath+0xea1/0x14b0 kernel/locking/rwsem.c:1189
inode_lock include/linux/fs.h:758 [inline]
open_last_lookups fs/namei.c:3547 [inline]
path_openat+0x7b6/0x2e60 fs/namei.c:3780
do_filp_open+0x230/0x480 fs/namei.c:3810
do_sys_openat2+0x13b/0x4f0 fs/open.c:1318
do_sys_open fs/open.c:1334 [inline]
__do_sys_openat fs/open.c:1350 [inline]
__se_sys_openat fs/open.c:1345 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1345
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fd302b85d29
RSP: 002b:00007fd303a14038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fd302d76240 RCX: 00007fd302b85d29
RDX: 000000000000275a RSI: 0000000020000280 RDI: ffffffffffffff9c
RBP: 00007fd302c01b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007fd302d76240 R15: 00007ffe1cdb94d8
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d32b290 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:517
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d32ba90 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:517
1 lock held by khungtaskd/27:
#0: ffffffff8d32b0c0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
#0: ffffffff8d32b0c0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline]
#0: ffffffff8d32b0c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6510
2 locks held by getty/4005:
#0: ffff88814cf3d098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc9000325e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a7/0x1db0 drivers/tty/n_tty.c:2198
3 locks held by kworker/1:8/4337:
#0: ffff888017c70938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267
#1: ffffc90004567d20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267
#2: ffffffff8d3306b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline]
#2: ffffffff8d3306b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x360/0x930 kernel/rcu/tree_exp.h:962
2 locks held by kworker/1:13/8489:
#0: ffff888017c72138 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267
#1: ffffc90003247d20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267
3 locks held by kworker/1:22/14622:
#0: ffff888140171938 ((wq_completion)pm){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267
#1: ffffc9000567fd20 ((work_completion)(&hcd->wakeup_work)){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267
#2: ffff888028749190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#2: ffff888028749190 (&dev->mutex){....}-{3:3}, at: usb_remote_wakeup+0x1f/0xf0 drivers/usb/core/hub.c:3793
2 locks held by syz.3.3651/18722:
1 lock held by syz.3.3651/18743:
#0: ffff888070a28188 (&type->i_mutex_dir_key#29){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:768 [inline]
#0: ffff888070a28188 (&type->i_mutex_dir_key#29){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1706
1 lock held by syz.3.3651/18745:
#0: ffff888070a28188 (&type->i_mutex_dir_key#29/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:793 [inline]
#0: ffff888070a28188 (&type->i_mutex_dir_key#29/1){+.+.}-{3:3}, at: filename_create+0x25c/0x530 fs/namei.c:3876
1 lock held by syz.3.3651/18748:
#0: ffff888070a28188 (&type->i_mutex_dir_key#29){++++}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
#0: ffff888070a28188 (&type->i_mutex_dir_key#29){++++}-{3:3}, at: open_last_lookups fs/namei.c:3547 [inline]
#0: ffff888070a28188 (&type->i_mutex_dir_key#29){++++}-{3:3}, at: path_openat+0x7b6/0x2e60 fs/namei.c:3780
1 lock held by syz-executor/20189:
#0: ffffffff8d3306b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline]
#0: ffffffff8d3306b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x4f0/0x930 kernel/rcu/tree_exp.h:962
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 6.1.123-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x4e1/0x560 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1ae/0x3f0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xf88/0xfd0 kernel/hung_task.c:377
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4508 Comm: kworker/u4:14 Not tainted 6.1.123-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
RIP: 0010:hlock_class kernel/locking/lockdep.c:228 [inline]
RIP: 0010:mark_lock+0x88/0x340 kernel/locking/lockdep.c:4606
Code: 41 d3 e6 49 8d 5f 20 48 89 d8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 29 02 00 00 8b 1b 81 e3 ff 1f 00 00 48 89 d8 48 c1 e8 06 <48> 8d 3c c5 60 f2 24 91 be 08 00 00 00 e8 36 1f 77 00 48 0f a3 1d
RSP: 0018:ffffc9000500f958 EFLAGS: 00000047
RAX: 0000000000000000 RBX: 000000000000002c RCX: 0000000000000009
RDX: 0000000000000008 RSI: ffff888073e0e470 RDI: ffff888073e0d940
RBP: 0000000000000009 R08: dffffc0000000000 R09: fffffbfff2249e67
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888073e0e418
R13: dffffc0000000000 R14: 0000000000000200 R15: ffff888073e0e470
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd189d48178 CR3: 000000000d08e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
mark_usage kernel/locking/lockdep.c:4549 [inline]
__lock_acquire+0xc6a/0x1f80 kernel/locking/lockdep.c:5003
lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662
rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
rcu_read_lock include/linux/rcupdate.h:791 [inline]
batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:408 [inline]
batadv_nc_worker+0xe8/0x610 net/batman-adv/network-coding.c:719
process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295