INFO: task syz-executor.5:14055 blocked for more than 143 seconds.
Not tainted 6.8.0-rc1-syzkaller-00024-g5d9248eed480 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:25072 pid:14055 tgid:14050 ppid:5099 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x177f/0x4960 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6874
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a3/0xd60 kernel/locking/mutex.c:752
__fdget_pos+0x258/0x320 fs/file.c:1191
fdget_pos include/linux/file.h:74 [inline]
__do_sys_getdents64 fs/readdir.c:405 [inline]
__se_sys_getdents64+0x1dc/0x4f0 fs/readdir.c:394
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f2516e7cda9
RSP: 002b:00007f2517c770c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 00007f2516fac050 RCX: 00007f2516e7cda9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: 00007f2516ec947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f2516fac050 R15: 00007fffa079b798
Showing all locks held in the system:
4 locks held by kworker/u4:0/11:
#0: ffff8880b993c918 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
#1: ffff8880b9928988 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:988
#2: ffff888036708768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: wiphy_lock include/net/cfg80211.h:5928 [inline]
#2: ffff888036708768 (&rdev->wiphy.mtx){+.+.}-{3:3}, at: cfg80211_wiphy_work+0x35/0x250 net/wireless/core.c:424
#3: ffffffff8d92ef20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#3: ffffffff8d92ef20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#3: ffffffff8d92ef20 (rcu_read_lock){....}-{1:2}, at: ieee80211_sta_active_ibss+0xc7/0x330 net/mac80211/ibss.c:642
1 lock held by khungtaskd/29:
#0: ffffffff8d92ef20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8d92ef20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8d92ef20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by getty/4802:
#0: ffff88802987e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002efe2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
1 lock held by syz-executor.1/5085:
#0: ffff888019ebc0e0 (&type->s_umount_key#90){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff888019ebc0e0 (&type->s_umount_key#90){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff888019ebc0e0 (&type->s_umount_key#90){+.+.}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:509
1 lock held by syz-executor.3/5084:
#0: ffffffff8d9348b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
#0: ffffffff8d9348b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a3/0x890 kernel/rcu/tree_exp.h:996
2 locks held by kworker/1:7/5143:
#0: ffff88801308a938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#0: ffff88801308a938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#1: ffffc900046bfd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#1: ffffc900046bfd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
1 lock held by syz-executor.4/6088:
#0: ffff88807f7de0e0 (&type->s_umount_key#90){+.+.}-{3:3}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88807f7de0e0 (&type->s_umount_key#90){+.+.}-{3:3}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88807f7de0e0 (&type->s_umount_key#90){+.+.}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:509
3 locks held by syz-executor.5/14054:
1 lock held by syz-executor.5/14055:
#0: ffff88807884ed48 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x258/0x320 fs/file.c:1191
3 locks held by kworker/u4:1/14128:
1 lock held by syz-executor.2/18289:
#0: ffffffff8d9348b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#0: ffffffff8d9348b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x46c/0x890 kernel/rcu/tree_exp.h:996
1 lock held by syz-executor.0/18306:
1 lock held by udevadm/18335:
2 locks held by syz-executor.5/18342:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc1-syzkaller-00024-g5d9248eed480 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x310 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+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 18335 Comm: udevadm Not tainted 6.8.0-rc1-syzkaller-00024-g5d9248eed480 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:__lock_acquire+0x6d/0x1fd0 kernel/locking/lockdep.c:5005
Code: 30 84 c0 0f 85 47 16 00 00 83 3d c9 d4 94 0d 00 0f 84 1c 11 00 00 83 3d e0 30 12 0c 00 74 2c 4c 89 e0 48 c1 e8 03 80 3c 30 00 <74> 12 4c 89 e7 e8 19 4c 7e 00 48 be 00 00 00 00 00 fc ff df 48 c7
RSP: 0018:ffffc90017ba7350 EFLAGS: 00000046
RAX: 1ffffffff2504fbb RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: dffffc0000000000 RDI: ffffffff92827dd8
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: dffffc0000000000 R11: fffffbfff1e04666 R12: ffffffff92827dd8
R13: 0000000000000001 R14: ffff88801e16d940 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f08c6d35440 CR3: 0000000020adf000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
__debug_check_no_obj_freed lib/debugobjects.c:978 [inline]
debug_check_no_obj_freed+0x230/0x580 lib/debugobjects.c:1019
slab_free_hook mm/slub.c:2093 [inline]
slab_free mm/slub.c:4299 [inline]
kmem_cache_free+0xcc/0x2a0 mm/slub.c:4363
pagetable_pte_dtor include/linux/mm.h:2940 [inline]
___pte_free_tlb+0x2d/0x130 arch/x86/mm/pgtable.c:55
__pte_free_tlb arch/x86/include/asm/pgalloc.h:61 [inline]
free_pte_range mm/memory.c:192 [inline]
free_pmd_range mm/memory.c:210 [inline]
free_pud_range mm/memory.c:244 [inline]
free_p4d_range mm/memory.c:278 [inline]
free_pgd_range+0x727/0xdd0 mm/memory.c:358
free_pgtables+0x6dc/0x7c0
exit_mmap+0x4ae/0xd30 mm/mmap.c:3288
__mmput+0x115/0x3c0 kernel/fork.c:1343
exit_mm+0x21f/0x300 kernel/exit.c:569
do_exit+0x9af/0x2740 kernel/exit.c:858
do_group_exit+0x206/0x2c0 kernel/exit.c:1020
__do_sys_exit_group kernel/exit.c:1031 [inline]
__se_sys_exit_group kernel/exit.c:1029 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1029
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f08c68fca90
Code: Unable to access opcode bytes at 0x7f08c68fca66.
RSP: 002b:00007ffd10f8e148 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f08c69ed860 RCX: 00007f08c68fca90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00007f08c69ed860 R08: 00007ffd10f8df80 R09: 00007ffd10f8e080
R10: 00007ffd10f8dfe0 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f08c69f1658 R15: 0000000000000001