INFO: task syz-executor.0:2677 blocked for more than 143 seconds.
Not tainted 6.8.0-rc5-syzkaller-00329-gab0a97cffa0b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:27888 pid:2677 tgid:2674 ppid:30698 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x177f/0x49a0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
request_wait_answer fs/fuse/dev.c:407 [inline]
__fuse_request_send fs/fuse/dev.c:426 [inline]
fuse_simple_request+0x1198/0x1b90 fs/fuse/dev.c:513
fuse_access fs/fuse/dir.c:1466 [inline]
fuse_permission+0x63e/0xa90 fs/fuse/dir.c:1545
do_inode_permission fs/namei.c:462 [inline]
inode_permission+0x23b/0x460 fs/namei.c:529
path_permission include/linux/fs.h:2767 [inline]
__do_sys_chdir fs/open.c:560 [inline]
__se_sys_chdir+0x14d/0x220 fs/open.c:550
do_syscall_64+0xf9/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7faedfc7dda9
RSP: 002b:00007faedefff0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000050
RAX: ffffffffffffffda RBX: 00007faedfdac050 RCX: 00007faedfc7dda9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020004340
RBP: 00007faedfcca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007faedfdac050 R15: 00007fff72bd0ab8
INFO: task syz-executor.0:2679 blocked for more than 144 seconds.
Not tainted 6.8.0-rc5-syzkaller-00329-gab0a97cffa0b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:26864 pid:2679 tgid:2674 ppid:30698 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x177f/0x49a0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
request_wait_answer fs/fuse/dev.c:407 [inline]
__fuse_request_send fs/fuse/dev.c:426 [inline]
fuse_simple_request+0x1198/0x1b90 fs/fuse/dev.c:513
fuse_do_getattr+0x39a/0x840 fs/fuse/dir.c:1263
fuse_update_get_attr+0xa1a/0x1940 fs/fuse/dir.c:1319
vfs_statx+0x1a5/0x4e0 fs/stat.c:248
vfs_fstatat fs/stat.c:304 [inline]
vfs_stat include/linux/fs.h:3190 [inline]
__do_sys_newstat fs/stat.c:441 [inline]
__se_sys_newstat fs/stat.c:437 [inline]
__x64_sys_newstat+0xf8/0x180 fs/stat.c:437
do_syscall_64+0xf9/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7faedfc7dda9
RSP: 002b:00007faedefde0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000004
RAX: ffffffffffffffda RBX: 00007faedfdac120 RCX: 00007faedfc7dda9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020004280
RBP: 00007faedfcca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007faedfdac120 R15: 00007fff72bd0ab8
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8e130c60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8e130c60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8e130c60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
3 locks held by kworker/u4:2/42:
2 locks held by getty/4809:
#0: ffff88802b43d0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
3 locks held by syz-executor.2/5084:
#0: ffff88801ddcc420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff8880b9528988 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988
#2: ffffffff8e130c60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#2: ffffffff8e130c60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#2: ffffffff8e130c60 (rcu_read_lock){....}-{1:2}, at: percpu_ref_put_many include/linux/percpu-refcount.h:330 [inline]
#2: ffffffff8e130c60 (rcu_read_lock){....}-{1:2}, at: percpu_ref_put+0x1f/0x250 include/linux/percpu-refcount.h:351
5 locks held by kworker/1:2/15540:
#0: ffff8880b953c918 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
#1: ffff8880b9528988 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988
#2: ffff8880b9529898 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x120/0x260 kernel/time/timer.c:999
#3: ffffffff8e130c60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#3: ffffffff8e130c60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#3: ffffffff8e130c60 (rcu_read_lock){....}-{1:2}, at: __queue_work+0x19d/0x1000 kernel/workqueue.c:1730
#4: ffff8880b943c0d8 (&pool->lock){-.-.}-{2:2}, at: __queue_work+0x71f/0x1000
4 locks held by syz-executor.1/26202:
#0: ffff88801ddcc420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff88807a70c000 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:839 [inline]
#1: ffff88807a70c000 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: do_unlinkat+0x26a/0x830 fs/namei.c:4385
#2: ffff88807a708e00 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:804 [inline]
#2: ffff88807a708e00 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: vfs_unlink+0xe4/0x600 fs/namei.c:4323
#3: ffff8880b953c918 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
1 lock held by udevd/2770:
#0: ffff88801d1470c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:859 [inline]
#0: ffff88801d1470c0 (mapping.invalidate_lock#2){++++}-{3:3}, at: page_cache_ra_unbounded+0xf1/0x7c0 mm/readahead.c:225
3 locks held by syz-executor.0/2827:
#0: ffff88801ddcc420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff8880308af200 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:839 [inline]
#1: ffff8880308af200 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: do_rmdir+0x263/0x580 fs/namei.c:4252
#2: ffff88801ddcc610 (sb_internal){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:116 [inline]
#2: ffff88801ddcc610 (sb_internal){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:215 [inline]
#2: ffff88801ddcc610 (sb_internal){.+.+}-{0:0}, at: tomoyo_read_lock security/tomoyo/common.h:1108 [inline]
#2: ffff88801ddcc610 (sb_internal){.+.+}-{0:0}, at: tomoyo_path_perm+0x287/0x740 security/tomoyo/file.c:821
1 lock held by syz-executor.4/5491:
#0: ffffffff8e1365f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
#0: ffffffff8e1365f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a3/0x890 kernel/rcu/tree_exp.h:995
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc5-syzkaller-00329-gab0a97cffa0b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
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:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xfaf/0xff0 kernel/hung_task.c:379
kthread+0x2ef/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 2823 Comm: kworker/u4:6 Not tainted 6.8.0-rc5-syzkaller-00329-gab0a97cffa0b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:kasan_check_range+0x5/0x290 mm/kasan/generic.c:188
Code: 8d e8 5f 07 e6 ff 90 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 55 <41> 57 41 56 41 54 53 b0 01 48 85 f6 0f 84 a0 01 00 00 4c 8d 04 37
RSP: 0018:ffffc900040978c0 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000021 RCX: ffffffff817121c9
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff92c56420
RBP: 0000000000000002 R08: ffffffff92c56427 R09: 1ffffffff258ac84
R10: dffffc0000000000 R11: fffffbfff258ac85 R12: 0000000000000000
R13: ffff8880237bbb80 R14: 000000000000000a R15: ffff8880237bc6b0
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00f931000 CR3: 000000002d26c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
hlock_class kernel/locking/lockdep.c:228 [inline]
check_wait_context kernel/locking/lockdep.c:4774 [inline]
__lock_acquire+0x5c9/0x1fd0 kernel/locking/lockdep.c:5087
lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754
rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
rcu_read_lock include/linux/rcupdate.h:750 [inline]
batadv_nc_process_nc_paths+0xd6/0x3a0 net/batman-adv/network-coding.c:687
batadv_nc_worker+0x52c/0x610 net/batman-adv/network-coding.c:735
process_one_work kernel/workqueue.c:2633 [inline]
process_scheduled_works+0x913/0x1420 kernel/workqueue.c:2706
worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
kthread+0x2ef/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242