INFO: task kworker/u4:2:33 blocked for more than 143 seconds.
Tainted: G W 6.1.122-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:2 state:D stack:22552 pid:33 ppid:2 flags:0x00004000
Workqueue: nfc2_nci_cmd_wq nci_cmd_work
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
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6693
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x6b9/0xd80 kernel/locking/mutex.c:747
virtual_nci_send+0x1c/0xd0 drivers/nfc/virtual_ncidev.c:54
nci_cmd_work+0xa4/0x2a0 net/nfc/nci/core.c:1589
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
INFO: task dhcpcd:3916 blocked for more than 143 seconds.
Tainted: G W 6.1.122-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:dhcpcd state:D stack:25008 pid:3916 ppid:1 flags:0x00004002
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
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6693
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x6b9/0xd80 kernel/locking/mutex.c:747
genl_lock net/netlink/genetlink.c:33 [inline]
genl_rcv_msg+0x125/0xf70 net/netlink/genetlink.c:848
netlink_rcv_skb+0x1cd/0x410 net/netlink/af_netlink.c:2493
genl_rcv+0x24/0x40 net/netlink/genetlink.c:861
netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline]
netlink_unicast+0x7d8/0x970 net/netlink/af_netlink.c:1337
netlink_sendmsg+0xa26/0xd60 net/netlink/af_netlink.c:1859
sock_sendmsg_nosec net/socket.c:718 [inline]
__sock_sendmsg net/socket.c:730 [inline]
____sys_sendmsg+0x5a5/0x8f0 net/socket.c:2519
___sys_sendmsg net/socket.c:2573 [inline]
__sys_sendmsg+0x2a9/0x390 net/socket.c:2602
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: 0033:0x7f49bf9b5a4b
RSP: 002b:00007fffc9fe7218 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000056468592794f RCX: 00007f49bf9b5a4b
RDX: 0000000000000000 RSI: 00007fffc9fe7260 RDI: 0000000000000010
RBP: 00007fffc9ffb728 R08: 0000000000000000 R09: 0000000000000000
R10: 00007fffc9ffb970 R11: 0000000000000246 R12: 0000000000000010
R13: 00007fffc9feb2c0 R14: 0000000000000000 R15: 000056469440cb70
INFO: task syz.4.332:6081 blocked for more than 143 seconds.
Tainted: G W 6.1.122-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.332 state:D stack:23824 pid:6081 ppid:4249 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
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6693
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x6b9/0xd80 kernel/locking/mutex.c:747
device_lock include/linux/device.h:837 [inline]
nfc_register_device+0x98/0x310 net/nfc/core.c:1128
nci_register_device+0x7be/0x900 net/nfc/nci/core.c:1265
virtual_ncidev_open+0x55/0xc0 drivers/nfc/virtual_ncidev.c:150
misc_open+0x304/0x380 drivers/char/misc.c:143
chrdev_open+0x54a/0x630 fs/char_dev.c:414
do_dentry_open+0x7f9/0x10f0 fs/open.c:882
do_open fs/namei.c:3626 [inline]
path_openat+0x2644/0x2e60 fs/namei.c:3783
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: 0033:0x7fa0e4f85d29
RSP: 002b:00007fa0e5ce8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fa0e5175fa0 RCX: 00007fa0e4f85d29
RDX: 0000000000000002 RSI: 0000000020000080 RDI: ffffffffffffff9c
RBP: 00007fa0e5001b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fa0e5175fa0 R15: 00007fff516820f8
INFO: task syz.4.332:6085 blocked for more than 144 seconds.
Tainted: G W 6.1.122-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.332 state:D stack:25600 pid:6085 ppid:4249 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
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6693
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x6b9/0xd80 kernel/locking/mutex.c:747
virtual_nci_close+0x13/0x40 drivers/nfc/virtual_ncidev.c:44
nci_open_device net/nfc/nci/core.c:544 [inline]
nci_dev_up+0x954/0xd40 net/nfc/nci/core.c:631
nfc_dev_up+0x185/0x330 net/nfc/core.c:118
nfc_genl_dev_up+0x80/0xd0 net/nfc/netlink.c:770
genl_family_rcv_msg_doit net/netlink/genetlink.c:756 [inline]
genl_family_rcv_msg net/netlink/genetlink.c:833 [inline]
genl_rcv_msg+0xc1a/0xf70 net/netlink/genetlink.c:850
netlink_rcv_skb+0x1cd/0x410 net/netlink/af_netlink.c:2493
genl_rcv+0x24/0x40 net/netlink/genetlink.c:861
netlink_unicast_kernel net/netlink/af_netlink.c:1311 [inline]
netlink_unicast+0x7d8/0x970 net/netlink/af_netlink.c:1337
netlink_sendmsg+0xa26/0xd60 net/netlink/af_netlink.c:1859
sock_sendmsg_nosec net/socket.c:718 [inline]
__sock_sendmsg net/socket.c:730 [inline]
____sys_sendmsg+0x5a5/0x8f0 net/socket.c:2519
___sys_sendmsg net/socket.c:2573 [inline]
__sys_sendmsg+0x2a9/0x390 net/socket.c:2602
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: 0033:0x7fa0e4f85d29
RSP: 002b:00007fa0e4dff038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fa0e5176080 RCX: 00007fa0e4f85d29
RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000006
RBP: 00007fa0e5001b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fa0e5176080 R15: 00007fff516820f8
INFO: task syz.8.333:6094 blocked for more than 144 seconds.
Tainted: G W 6.1.122-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.8.333 state:D stack:24512 pid:6094 ppid:5645 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
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6693
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x6b9/0xd80 kernel/locking/mutex.c:747
misc_open+0x58/0x380 drivers/char/misc.c:107
chrdev_open+0x54a/0x630 fs/char_dev.c:414
do_dentry_open+0x7f9/0x10f0 fs/open.c:882
do_open fs/namei.c:3626 [inline]
path_openat+0x2644/0x2e60 fs/namei.c:3783
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: 0033:0x7f13f6185d29
RSP: 002b:00007f13f5fde038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f13f6376160 RCX: 00007f13f6185d29
RDX: 0000000000000000 RSI: 0000000020000240 RDI: ffffffffffffff9c
RBP: 00007f13f6201b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f13f6376160 R15: 00007ffee83869a8
INFO: task syz.6.338:6115 blocked for more than 144 seconds.
Tainted: G W 6.1.122-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.338 state:D stack:24712 pid:6115 ppid:5262 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
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6693
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x6b9/0xd80 kernel/locking/mutex.c:747
misc_open+0x58/0x380 drivers/char/misc.c:107
chrdev_open+0x54a/0x630 fs/char_dev.c:414
do_dentry_open+0x7f9/0x10f0 fs/open.c:882
do_open fs/namei.c:3626 [inline]
path_openat+0x2644/0x2e60 fs/namei.c:3783
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: 0033:0x7f0905585d29
RSP: 002b:00007f090636f038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f0905775fa0 RCX: 00007f0905585d29
RDX: 0000000000000000 RSI: 0000000020000000 RDI: ffffffffffffff9c
RBP: 00007f0905601b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0905775fa0 R15: 00007ffc89a3cd58
INFO: task syz.7.342:6132 blocked for more than 145 seconds.
Tainted: G W 6.1.122-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.7.342 state:D stack:24712 pid:6132 ppid:5518 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
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6693
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x6b9/0xd80 kernel/locking/mutex.c:747
misc_open+0x58/0x380 drivers/char/misc.c:107
chrdev_open+0x54a/0x630 fs/char_dev.c:414
do_dentry_open+0x7f9/0x10f0 fs/open.c:882
do_open fs/namei.c:3626 [inline]
path_openat+0x2644/0x2e60 fs/namei.c:3783
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: 0033:0x7f13b5b85d29
RSP: 002b:00007f13b6aa3038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f13b5d75fa0 RCX: 00007f13b5b85d29
RDX: 0000000000000000 RSI: 0000000020000000 RDI: ffffffffffffff9c
RBP: 00007f13b5c01b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f13b5d75fa0 R15: 00007ffdbefce6c8
INFO: task syz.5.343:6137 blocked for more than 145 seconds.
Tainted: G W 6.1.122-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.343 state:D stack:26520 pid:6137 ppid:5260 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
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6693
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x6b9/0xd80 kernel/locking/mutex.c:747
misc_open+0x58/0x380 drivers/char/misc.c:107
chrdev_open+0x54a/0x630 fs/char_dev.c:414
do_dentry_open+0x7f9/0x10f0 fs/open.c:882
do_open fs/namei.c:3626 [inline]
path_openat+0x2644/0x2e60 fs/namei.c:3783
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: 0033:0x7f2a59585d29
RSP: 002b:00007f2a593de038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f2a59776160 RCX: 00007f2a59585d29
RDX: 0000000000000002 RSI: 0000000020000740 RDI: ffffffffffffff9c
RBP: 00007f2a59601b08 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f2a59776160 R15: 00007ffc5eda0cf8
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+0x34/0xde0 kernel/rcu/tasks.h:543
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d32bab0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x34/0xde0 kernel/rcu/tasks.h:543
1 lock held by khungtaskd/28:
#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
3 locks held by kworker/u4:2/33:
#0: ffff888076a45138 ((wq_completion)nfc2_nci_cmd_wq){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267
#1: ffffc90000aa7d20 ((work_completion)(&ndev->cmd_work)){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267
#2: ffffffff8dbece28 (nci_mutex){+.+.}-{3:3}, at: virtual_nci_send+0x1c/0xd0 drivers/nfc/virtual_ncidev.c:54
2 locks held by dhcpcd/3916:
#0: ffffffff8e56a1d0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40 net/netlink/genetlink.c:860
#1: ffffffff8e56a088 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
#1: ffffffff8e56a088 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x125/0xf70 net/netlink/genetlink.c:848
2 locks held by getty/4009:
#0: ffff88803054e098 (&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 syz.4.332/6081:
#0: ffffffff8da905e8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x58/0x380 drivers/char/misc.c:107
#1: ffffffff8dbece28 (nci_mutex){+.+.}-{3:3}, at: virtual_ncidev_open+0x15/0xc0 drivers/nfc/virtual_ncidev.c:137
#2: ffff888058386100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#2: ffff888058386100 (&dev->mutex){....}-{3:3}, at: nfc_register_device+0x98/0x310 net/nfc/core.c:1128
5 locks held by syz.4.332/6085:
#0: ffffffff8e56a1d0 (cb_lock){++++}-{3:3}, at: genl_rcv+0x15/0x40 net/netlink/genetlink.c:860
#1: ffffffff8e56a088 (genl_mutex){+.+.}-{3:3}, at: genl_lock net/netlink/genetlink.c:33 [inline]
#1: ffffffff8e56a088 (genl_mutex){+.+.}-{3:3}, at: genl_rcv_msg+0x125/0xf70 net/netlink/genetlink.c:848
#2: ffff888058386100 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:837 [inline]
#2: ffff888058386100 (&dev->mutex){....}-{3:3}, at: nfc_dev_up+0x3b/0x330 net/nfc/core.c:95
#3: ffff888058383350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_open_device net/nfc/nci/core.c:477 [inline]
#3: ffff888058383350 (&ndev->req_lock){+.+.}-{3:3}, at: nci_dev_up+0xa0/0xd40 net/nfc/nci/core.c:631
#4: ffffffff8dbece28 (nci_mutex){+.+.}-{3:3}, at: virtual_nci_close+0x13/0x40 drivers/nfc/virtual_ncidev.c:44
1 lock held by syz.8.333/6094:
#0: ffffffff8da905e8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x58/0x380 drivers/char/misc.c:107
1 lock held by syz.6.338/6115:
#0: ffffffff8da905e8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x58/0x380 drivers/char/misc.c:107
1 lock held by syz.7.342/6132:
#0: ffffffff8da905e8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x58/0x380 drivers/char/misc.c:107
1 lock held by syz.5.343/6137:
#0: ffffffff8da905e8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x58/0x380 drivers/char/misc.c:107
1 lock held by syz-executor/6141:
#0: ffffffff8da905e8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x58/0x380 drivers/char/misc.c:107
1 lock held by syz-executor/6143:
#0: ffffffff8da905e8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x58/0x380 drivers/char/misc.c:107
1 lock held by syz-executor/6145:
#0: ffffffff8da905e8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x58/0x380 drivers/char/misc.c:107
1 lock held by syz-executor/6147:
#0: ffffffff8da905e8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x58/0x380 drivers/char/misc.c:107
1 lock held by syz-executor/6149:
#0: ffffffff8da905e8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x58/0x380 drivers/char/misc.c:107
1 lock held by syz-executor/6151:
#0: ffffffff8da905e8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x58/0x380 drivers/char/misc.c:107
1 lock held by syz-executor/6153:
#0: ffffffff8da905e8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x58/0x380 drivers/char/misc.c:107
1 lock held by syz-executor/6155:
#0: ffffffff8da905e8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x58/0x380 drivers/char/misc.c:107
1 lock held by syz-executor/6157:
#0: ffffffff8da905e8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x58/0x380 drivers/char/misc.c:107
1 lock held by syz-executor/6159:
#0: ffffffff8da905e8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x58/0x380 drivers/char/misc.c:107
1 lock held by syz-executor/6161:
#0: ffffffff8da905e8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x58/0x380 drivers/char/misc.c:107
1 lock held by syz-executor/6163:
#0: ffffffff8da905e8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x58/0x380 drivers/char/misc.c:107
1 lock held by syz-executor/6165:
#0: ffffffff8da905e8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x58/0x380 drivers/char/misc.c:107
1 lock held by syz-executor/6167:
#0: ffffffff8da905e8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x58/0x380 drivers/char/misc.c:107
1 lock held by syz-executor/6169:
#0: ffffffff8da905e8 (misc_mtx){+.+.}-{3:3}, at: misc_open+0x58/0x380 drivers/char/misc.c:107
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Tainted: G W 6.1.122-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: 3612 Comm: klogd Tainted: G W 6.1.122-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:unwind_get_return_address+0x0/0x80 arch/x86/kernel/unwind_orc.c:319
Code: 03 38 c1 0f 8c fb fe ff ff 48 89 df 89 74 24 14 e8 25 5c a5 00 48 8d 7c 24 40 8b 74 24 14 e9 e1 fe ff ff e8 92 90 75 09 66 90 <41> 57 41 56 53 48 89 fb 49 be 00 00 00 00 00 fc ff df 48 89 f8 48
RSP: 0018:ffffc900032973b8 EFLAGS: 00000202
RAX: ffffc90003297450 RBX: ffffc900032973c0 RCX: 0000000080000000
RDX: dffffc0000000000 RSI: ffffc90003290000 RDI: ffffc900032973c0
RBP: ffffc90003297450 R08: ffffc90003297450 R09: ffffc90003297410
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88807c4e9dc0
R13: ffffffff81785880 R14: ffffc900032974a0 R15: 0000000000000000
FS: 00007f40c8f37380(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f80934a7d60 CR3: 000000007cd06000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0xf3/0x140 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
__kasan_slab_alloc+0x65/0x70 mm/kasan/common.c:328
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook+0x52/0x3a0 mm/slab.h:737
slab_alloc_node mm/slub.c:3398 [inline]
kmem_cache_alloc_node+0x136/0x310 mm/slub.c:3443
__alloc_skb+0xde/0x670 net/core/skbuff.c:505
alloc_skb include/linux/skbuff.h:1271 [inline]
alloc_skb_with_frags+0xa4/0x740 net/core/skbuff.c:6162
sock_alloc_send_pskb+0x915/0xa50 net/core/sock.c:2747
unix_dgram_sendmsg+0x5b1/0x2050 net/unix/af_unix.c:1918
sock_sendmsg_nosec net/socket.c:718 [inline]
__sock_sendmsg net/socket.c:730 [inline]
__sys_sendto+0x480/0x600 net/socket.c:2153
__do_sys_sendto net/socket.c:2165 [inline]
__se_sys_sendto net/socket.c:2161 [inline]
__x64_sys_sendto+0xda/0xf0 net/socket.c:2161
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: 0033:0x7f40c90999b5
Code: 8b 44 24 08 48 83 c4 28 48 98 c3 48 98 c3 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 26 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 7a 48 8b 15 44 c4 0c 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffd9e9cf298 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f40c90999b5
RDX: 000000000000005e RSI: 000055795e08a3d0 RDI: 0000000000000003
RBP: 000055795e084910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000013
R13: 00007f40c9227212 R14: 00007ffd9e9cf398 R15: 0000000000000000