INFO: task syz-executor.1:5094 blocked for more than 143 seconds.
Not tainted 6.6.0-syzkaller-06824-g8bc9e6515183 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:24080 pid:5094 tgid:5094 ppid:1 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xee2/0x59a0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0xe7/0x270 kernel/sched/core.c:6778
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6835
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x969/0x1340 kernel/locking/mutex.c:747
fuse_lock_inode+0xd2/0x110 fs/fuse/inode.c:492
fuse_lookup+0x14d/0x430 fs/fuse/dir.c:424
__lookup_slow+0x24d/0x450 fs/namei.c:1694
lookup_slow fs/namei.c:1711 [inline]
walk_component+0x349/0x5a0 fs/namei.c:2002
link_path_walk.part.0.constprop.0+0x71f/0xce0 fs/namei.c:2329
link_path_walk fs/namei.c:2254 [inline]
path_openat+0x240/0x2c40 fs/namei.c:3775
do_filp_open+0x1de/0x430 fs/namei.c:3809
do_sys_openat2+0x176/0x1e0 fs/open.c:1440
do_sys_open fs/open.c:1455 [inline]
__do_sys_openat fs/open.c:1471 [inline]
__se_sys_openat fs/open.c:1466 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1466
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f4cd907c541
RSP: 002b:00007ffce2651950 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000003979 RCX: 00007f4cd907c541
RDX: 0000000000090800 RSI: 00007f4cd90c745d RDI: 00000000ffffff9c
RBP: 00007ffce2651a1c R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000
R13: 00000000002fb0db R14: 00000000002fb059 R15: 0000000000000008
INFO: task syz-executor.1:32142 blocked for more than 143 seconds.
Not tainted 6.6.0-syzkaller-06824-g8bc9e6515183 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:27184 pid:32142 tgid:32134 ppid:5094 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5376 [inline]
__schedule+0xee2/0x59a0 kernel/sched/core.c:6688
__schedule_loop kernel/sched/core.c:6763 [inline]
schedule+0xe7/0x270 kernel/sched/core.c:6778
request_wait_answer+0x4f4/0x8f0 fs/fuse/dev.c:407
__fuse_request_send fs/fuse/dev.c:426 [inline]
fuse_simple_request+0x504/0xd10 fs/fuse/dev.c:513
fuse_lookup_name+0x1df/0x580 fs/fuse/dir.c:386
fuse_lookup+0x1ad/0x430 fs/fuse/dir.c:425
__lookup_slow+0x24d/0x450 fs/namei.c:1694
lookup_slow fs/namei.c:1711 [inline]
walk_component+0x349/0x5a0 fs/namei.c:2002
link_path_walk.part.0.constprop.0+0x71f/0xce0 fs/namei.c:2329
link_path_walk fs/namei.c:2254 [inline]
path_openat+0x240/0x2c40 fs/namei.c:3775
do_filp_open+0x1de/0x430 fs/namei.c:3809
do_sys_openat2+0x176/0x1e0 fs/open.c:1440
do_sys_open fs/open.c:1455 [inline]
__do_sys_openat fs/open.c:1471 [inline]
__se_sys_openat fs/open.c:1466 [inline]
__x64_sys_openat+0x175/0x210 fs/open.c:1466
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f4cd907b6e0
RSP: 002b:00007f4cd9e9ce20 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f4cd907b6e0
RDX: 0000000000000002 RSI: 00007f4cd9e9cf40 RDI: 00000000ffffff9c
RBP: 00007f4cd9e9cf40 R08: 0000000000000000 R09: 0000000000000da0
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000006
R13: 00007f4cd9e9cf3c R14: 00007f4cd9e9cf40 R15: 00007f4ccf7ff000
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8cfad2e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
#0: ffffffff8cfad2e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:747 [inline]
#0: ffffffff8cfad2e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6613
5 locks held by kworker/u4:7/2776:
2 locks held by getty/4817:
#0: ffff88814af350a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc9000311b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc5/0x1480 drivers/tty/n_tty.c:2206
2 locks held by syz-executor.1/5094:
#0: ffff88803d499c50 (&type->i_mutex_dir_key#18){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#0: ffff88803d499c50 (&type->i_mutex_dir_key#18){++++}-{3:3}, at: lookup_slow fs/namei.c:1710 [inline]
#0: ffff88803d499c50 (&type->i_mutex_dir_key#18){++++}-{3:3}, at: walk_component+0x33b/0x5a0 fs/namei.c:2002
#1: ffff88803d49a0c8 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd2/0x110 fs/fuse/inode.c:492
2 locks held by syz-executor.1/32142:
#0: ffff88803d499c50 (&type->i_mutex_dir_key#18){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#0: ffff88803d499c50 (&type->i_mutex_dir_key#18){++++}-{3:3}, at: lookup_slow fs/namei.c:1710 [inline]
#0: ffff88803d499c50 (&type->i_mutex_dir_key#18){++++}-{3:3}, at: walk_component+0x33b/0x5a0 fs/namei.c:2002
#1: ffff88803d49a0c8 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd2/0x110 fs/fuse/inode.c:492
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.6.0-syzkaller-06824-g8bc9e6515183 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x277/0x380 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x299/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xf87/0x1210 kernel/hung_task.c:379
kthread+0x33c/0x440 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 1083 Comm: kworker/u4:5 Not tainted 6.6.0-syzkaller-06824-g8bc9e6515183 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x1d/0x60 kernel/kcov.c:207
Code: 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 65 48 8b 14 25 c0 bc 03 00 65 8b 05 d4 3f 7b 7e a9 00 01 ff 00 48 8b 34 24 <74> 0f f6 c4 01 74 35 8b 82 0c 16 00 00 85 c0 74 2b 8b 82 e8 15 00
RSP: 0018:ffffc90004abfb40 EFLAGS: 00000246
RAX: 0000000080000000 RBX: 0000000000000001 RCX: ffffffff8a44db67
RDX: ffff88801f091dc0 RSI: ffffffff8a44dc5f RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff888039b897a8 R14: 0000000000000027 R15: ffffffff8a44d0c0
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0017bca48 CR3: 000000000cd77000 CR4: 0000000000350ef0
Call Trace:
rcu_read_unlock include/linux/rcupdate.h:776 [inline]
batadv_nc_process_nc_paths.part.0+0x2ef/0x3e0 net/batman-adv/network-coding.c:699
batadv_nc_process_nc_paths net/batman-adv/network-coding.c:679 [inline]
batadv_nc_worker+0xd4f/0x10e0 net/batman-adv/network-coding.c:728
process_one_work+0x884/0x15c0 kernel/workqueue.c:2630
process_scheduled_works kernel/workqueue.c:2703 [inline]
worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784
kthread+0x33c/0x440 kernel/kthread.c:388
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242