INFO: task kworker/u5:0:45 blocked for more than 143 seconds.
Not tainted 5.15.0-next-20211108-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u5:0 state:D stack:26504 pid: 45 ppid: 2 flags:0x00004000
Workqueue: hci2 scan_update_work
Call Trace:
context_switch kernel/sched/core.c:4984 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6265
schedule+0xd2/0x260 kernel/sched/core.c:6338
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6397
__mutex_lock_common kernel/locking/mutex.c:680 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740
hci_req_sync net/bluetooth/hci_request.c:209 [inline]
scan_update_work+0x26/0xb0 net/bluetooth/hci_request.c:1987
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
INFO: task kworker/u4:21:20178 blocked for more than 143 seconds.
Not tainted 5.15.0-next-20211108-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:21 state:D stack:24320 pid:20178 ppid: 2 flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
context_switch kernel/sched/core.c:4984 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6265
schedule+0xd2/0x260 kernel/sched/core.c:6338
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6397
__mutex_lock_common kernel/locking/mutex.c:680 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740
rfkill_unregister+0xda/0x2c0 net/rfkill/core.c:1117
wiphy_unregister+0x134/0xbf0 net/wireless/core.c:1027
ieee80211_unregister_hw+0x160/0x1f0 net/mac80211/main.c:1410
mac80211_hwsim_del_radio drivers/net/wireless/mac80211_hwsim.c:3583 [inline]
hwsim_exit_net+0x50e/0xca0 drivers/net/wireless/mac80211_hwsim.c:4346
ops_exit_list+0xb0/0x160 net/core/net_namespace.c:168
cleanup_net+0x4ea/0xb00 net/core/net_namespace.c:593
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
INFO: task kworker/0:5:24139 blocked for more than 143 seconds.
Not tainted 5.15.0-next-20211108-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:5 state:D stack:26296 pid:24139 ppid: 2 flags:0x00004000
Workqueue: events vhci_open_timeout
Call Trace:
context_switch kernel/sched/core.c:4984 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6265
schedule+0xd2/0x260 kernel/sched/core.c:6338
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6397
__mutex_lock_common kernel/locking/mutex.c:680 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740
rfkill_register+0x36/0xb00 net/rfkill/core.c:1044
hci_register_dev+0x385/0xc00 net/bluetooth/hci_core.c:2603
__vhci_create_device+0x37e/0x7b0 drivers/bluetooth/hci_vhci.c:334
vhci_create_device drivers/bluetooth/hci_vhci.c:372 [inline]
vhci_open_timeout+0x38/0x50 drivers/bluetooth/hci_vhci.c:529
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
INFO: task systemd-rfkill:26378 blocked for more than 143 seconds.
Not tainted 5.15.0-next-20211108-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:systemd-rfkill state:D stack:25984 pid:26378 ppid: 1 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4984 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6265
schedule+0xd2/0x260 kernel/sched/core.c:6338
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x174/0x270 kernel/sched/completion.c:138
__flush_work+0x56c/0xb10 kernel/workqueue.c:3084
__cancel_work_timer+0x3f9/0x570 kernel/workqueue.c:3171
hci_request_cancel_all+0x44/0x130 net/bluetooth/hci_request.c:2869
hci_dev_close_sync+0xa1/0x10b0 net/bluetooth/hci_sync.c:3970
hci_dev_do_close+0x32/0x70 net/bluetooth/hci_core.c:553
hci_rfkill_set_block+0x19c/0x1d0 net/bluetooth/hci_core.c:935
rfkill_set_block+0x1f9/0x540 net/rfkill/core.c:344
rfkill_fop_write+0x41a/0x500 net/rfkill/core.c:1276
vfs_write+0x28e/0xae0 fs/read_write.c:588
ksys_write+0x1ee/0x250 fs/read_write.c:643
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7ff70c7531b0
RSP: 002b:00007fff70efccc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00005593df3fc040 RCX: 00007ff70c7531b0
RDX: 0000000000000008 RSI: 00007fff70efcd10 RDI: 0000000000000003
RBP: 00007fff70efcd08 R08: 0000000000000003 R09: 0000000000001010
R10: 000000000001b0c0 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fff70efcd00 R14: 0000000000000000 R15: 0000000000000003
INFO: task syz-executor.0:26491 blocked for more than 144 seconds.
Not tainted 5.15.0-next-20211108-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:24168 pid:26491 ppid: 1 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4984 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6265
schedule+0xd2/0x260 kernel/sched/core.c:6338
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6397
__mutex_lock_common kernel/locking/mutex.c:680 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:740
rfkill_fop_open+0x10d/0x720 net/rfkill/core.c:1148
misc_open+0x372/0x4a0 drivers/char/misc.c:141
chrdev_open+0x266/0x770 fs/char_dev.c:414
do_dentry_open+0x4c8/0x1250 fs/open.c:822
do_open fs/namei.c:3426 [inline]
path_openat+0x1cad/0x2750 fs/namei.c:3559
do_filp_open+0x1aa/0x400 fs/namei.c:3586
do_sys_openat2+0x16d/0x4d0 fs/open.c:1212
do_sys_open fs/open.c:1228 [inline]
__do_sys_openat fs/open.c:1244 [inline]
__se_sys_openat fs/open.c:1239 [inline]
__x64_sys_openat+0x13f/0x1f0 fs/open.c:1239
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f9cfbfcca04
RSP: 002b:00007ffe9d32c820 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007ffe9d32cf68 RCX: 00007f9cfbfcca04
RDX: 0000000000000002 RSI: 00007f9cfc073247 RDI: 00000000ffffff9c
RBP: 00007f9cfc073247 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002
R13: 00007ffe9d32ca00 R14: 0000000000000000 R15: 00000000000000f8
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bb83a60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
3 locks held by kworker/u5:0/45:
#0: ffff8880796a5938 ((wq_completion)hci2){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8880796a5938 ((wq_completion)hci2){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff8880796a5938 ((wq_completion)hci2){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
#0: ffff8880796a5938 ((wq_completion)hci2){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:635 [inline]
#0: ffff8880796a5938 ((wq_completion)hci2){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:662 [inline]
#0: ffff8880796a5938 ((wq_completion)hci2){+.+.}-{0:0}, at: process_one_work+0x896/0x1690 kernel/workqueue.c:2269
#1: ffffc9000115fdb0 ((work_completion)(&hdev->scan_update)){+.+.}-{0:0}, at: process_one_work+0x8ca/0x1690 kernel/workqueue.c:2273
#2: ffff88807a3710d8 (&hdev->req_lock){+.+.}-{3:3}, at: hci_req_sync net/bluetooth/hci_request.c:209 [inline]
#2: ffff88807a3710d8 (&hdev->req_lock){+.+.}-{3:3}, at: scan_update_work+0x26/0xb0 net/bluetooth/hci_request.c:1987
4 locks held by kworker/u4:21/20178:
#0: ffff88801579a938 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff88801579a938 ((wq_completion)netns){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff88801579a938 ((wq_completion)netns){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
#0: ffff88801579a938 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:635 [inline]
#0: ffff88801579a938 ((wq_completion)netns){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:662 [inline]
#0: ffff88801579a938 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x896/0x1690 kernel/workqueue.c:2269
#1: ffffc9000297fdb0 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x8ca/0x1690 kernel/workqueue.c:2273
#2: ffffffff8d2f7d50 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x9b/0xb00 net/core/net_namespace.c:555
#3: ffffffff8d6f8a48 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_unregister+0xda/0x2c0 net/rfkill/core.c:1117
2 locks held by agetty/21654:
#0: ffff8880222d1098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252
#1: ffffc90004c4b2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113
4 locks held by kworker/0:5/24139:
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:635 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:662 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x896/0x1690 kernel/workqueue.c:2269
#1: ffffc90003b17db0 ((work_completion)(&(&data->open_timeout)->work)){+.+.}-{0:0}, at: process_one_work+0x8ca/0x1690 kernel/workqueue.c:2273
#2: ffff88804a4f5918 (&data->open_mutex){+.+.}-{3:3}, at: vhci_create_device drivers/bluetooth/hci_vhci.c:371 [inline]
#2: ffff88804a4f5918 (&data->open_mutex){+.+.}-{3:3}, at: vhci_open_timeout+0x2d/0x50 drivers/bluetooth/hci_vhci.c:529
#3: ffffffff8d6f8a48 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_register+0x36/0xb00 net/rfkill/core.c:1044
2 locks held by systemd-rfkill/26378:
#0: ffffffff8d6f8a48 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_write+0xff/0x500 net/rfkill/core.c:1260
#1: ffff88807a3710d8 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close+0x2a/0x70 net/bluetooth/hci_core.c:551
2 locks held by syz-executor.0/26491:
#0: ffffffff8c5e2688 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x55/0x4a0 drivers/char/misc.c:107
#1: ffffffff8d6f8a48 (rfkill_global_mutex){+.+.}-{3:3}, at: rfkill_fop_open+0x10d/0x720 net/rfkill/core.c:1148
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.0-next-20211108-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:254 [inline]
watchdog+0xcb7/0xed0 kernel/hung_task.c:339
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2967 Comm: systemd-journal Not tainted 5.15.0-next-20211108-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:983 [inline]
RIP: 0010:debug_check_no_obj_freed+0x117/0x420 lib/debugobjects.c:1023
Code: 22 01 00 00 00 00 ad de 4c 89 c0 31 ed 48 c1 e8 03 41 89 ec 42 80 3c 38 00 0f 85 d2 00 00 00 49 8d 78 18 41 83 c4 01 49 8b 28 <48> 89 f8 48 c1 e8 03 42 80 3c 38 00 0f 85 30 02 00 00 4d 8b 48 18
RSP: 0018:ffffc90001aefce0 EFLAGS: 00000002
RAX: 1ffff1100976fff8 RBX: ffff888050e86600 RCX: ffffffff815d4ed0
RDX: 1ffffffff20e7651 RSI: 0000000000000004 RDI: ffff88804bb7ffd8
RBP: 0000000000000000 R08: ffff88804bb7ffc0 R09: ffff8880539491c8
R10: fffff5200035df8a R11: 000000000000003f R12: 0000000000000008
R13: dead000000000122 R14: dead000000000100 R15: dffffc0000000000
FS: 00007f64065b28c0(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6403ee9000 CR3: 000000007a90f000 CR4: 00000000003506e0
Call Trace:
slab_free_hook mm/slub.c:1698 [inline]
slab_free_freelist_hook+0xeb/0x1c0 mm/slub.c:1749
slab_free mm/slub.c:3513 [inline]
kmem_cache_free+0x92/0x5e0 mm/slub.c:3529
putname fs/namei.c:270 [inline]
putname+0xfe/0x140 fs/namei.c:256
user_path_at_empty+0x4d/0x60 fs/namei.c:2803
user_path_at include/linux/namei.h:57 [inline]
do_faccessat+0x127/0x850 fs/open.c:421
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f640586d9c7
Code: 83 c4 08 48 3d 01 f0 ff ff 73 01 c3 48 8b 0d c8 d4 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 15 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d a1 d4 2b 00 f7 d8 64 89 01 48
RSP: 002b:00007ffe6eb78678 EFLAGS: 00000246 ORIG_RAX: 0000000000000015
RAX: ffffffffffffffda RBX: 00007ffe6eb7b590 RCX: 00007f640586d9c7
RDX: 00007f64062dea00 RSI: 0000000000000000 RDI: 000055725eab09a3
RBP: 00007ffe6eb786b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000069 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ffe6eb7b590 R15: 00007ffe6eb78ba0
----------------
Code disassembly (best guess):
0: 22 01 and (%rcx),%al
2: 00 00 add %al,(%rax)
4: 00 00 add %al,(%rax)
6: ad lods %ds:(%rsi),%eax
7: de 4c 89 c0 fimuls -0x40(%rcx,%rcx,4)
b: 31 ed xor %ebp,%ebp
d: 48 c1 e8 03 shr $0x3,%rax
11: 41 89 ec mov %ebp,%r12d
14: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1)
19: 0f 85 d2 00 00 00 jne 0xf1
1f: 49 8d 78 18 lea 0x18(%r8),%rdi
23: 41 83 c4 01 add $0x1,%r12d
27: 49 8b 28 mov (%r8),%rbp
* 2a: 48 89 f8 mov %rdi,%rax <-- trapping instruction
2d: 48 c1 e8 03 shr $0x3,%rax
31: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1)
36: 0f 85 30 02 00 00 jne 0x26c
3c: 4d 8b 48 18 mov 0x18(%r8),%r9