INFO: task syz.3.312:7941 blocked for more than 146 seconds.
Not tainted 6.15.0-rc7-syzkaller-g187899f4124a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.3.312 state:D stack:0 pid:7941 tgid:7926 ppid:6493 task_flags:0x400140 flags:0x00000001
Call trace:
__switch_to+0x414/0x834 arch/arm64/kernel/process.c:735 (T)
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x13b0/0x28d4 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0xb4/0x230 kernel/sched/core.c:6860
schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6917
__mutex_lock_common+0xbd0/0x2190 kernel/locking/mutex.c:678
__mutex_lock kernel/locking/mutex.c:746 [inline]
mutex_lock_nested+0x2c/0x38 kernel/locking/mutex.c:798
rtnl_lock net/core/rtnetlink.c:80 [inline]
rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
rtnl_dellink+0x27c/0x640 net/core/rtnetlink.c:3556
rtnetlink_rcv_msg+0x664/0x97c net/core/rtnetlink.c:6955
netlink_rcv_skb+0x230/0x414 net/netlink/af_netlink.c:2534
rtnetlink_rcv+0x28/0x38 net/core/rtnetlink.c:6982
netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
netlink_unicast+0x60c/0x824 net/netlink/af_netlink.c:1339
netlink_sendmsg+0x648/0x930 net/netlink/af_netlink.c:1883
sock_sendmsg_nosec net/socket.c:712 [inline]
__sock_sendmsg net/socket.c:727 [inline]
____sys_sendmsg+0x490/0x7b8 net/socket.c:2566
___sys_sendmsg+0x204/0x278 net/socket.c:2620
__sys_sendmsg net/socket.c:2652 [inline]
__do_sys_sendmsg net/socket.c:2657 [inline]
__se_sys_sendmsg net/socket.c:2655 [inline]
__arm64_sys_sendmsg+0x184/0x238 net/socket.c:2655
__invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767
el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786
el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
Showing all locks held in the system:
3 locks held by kworker/u8:0/12:
3 locks held by kworker/u8:1/13:
#0: ffff0000c0031148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212
#1: ffff800097667bc0 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212
#2: ffff80009248e928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80
1 lock held by khungtaskd/32:
#0: ffff80008f508920 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:330
3 locks held by kworker/u8:2/44:
3 locks held by kworker/u8:3/45:
1 lock held by pr/ttyAMA0/46:
3 locks held by kworker/u8:4/65:
4 locks held by kworker/u8:5/275:
2 locks held by kworker/u8:6/1619:
3 locks held by kworker/u8:7/2224:
3 locks held by kworker/u8:8/2623:
#0: ffff0000c0031948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212
#1: ffff8000a1e57bc0 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212
#2: ffff80009248e928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80
1 lock held by klogd/6093:
2 locks held by udevd/6104:
1 lock held by dhcpcd/6159:
#0: ffff80009248e928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80
2 locks held by getty/6248:
#0: ffff0000d86400a0 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x3c/0x4c drivers/tty/tty_ldsem.c:340
#1: ffff80009b5fb2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x34c/0xfa0 drivers/tty/n_tty.c:2222
4 locks held by udevd/6482:
1 lock held by syz-executor/6488:
2 locks held by syz-executor/6489:
#0: ffff0000faf9a0e0 (&type->s_umount_key#100){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline]
#0: ffff0000faf9a0e0 (&type->s_umount_key#100){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff0000faf9a0e0 (&type->s_umount_key#100){++++}-{4:4}, at: deactivate_super+0xd8/0x100 fs/super.c:505
#1: ffff80008f50e300 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x58/0x528 kernel/rcu/tree.c:3774
1 lock held by syz-executor/6491:
2 locks held by kworker/u8:9/6594:
3 locks held by kworker/u8:10/6595:
1 lock held by syz-executor/7490:
#0: ffff80009248e928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80
2 locks held by syz.3.312/7926:
#0: ffff0000dc8a6808 (&sb->s_type->i_mutex_key#11){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#0: ffff0000dc8a6808 (&sb->s_type->i_mutex_key#11){+.+.}-{4:4}, at: __sock_release net/socket.c:646 [inline]
#0: ffff0000dc8a6808 (&sb->s_type->i_mutex_key#11){+.+.}-{4:4}, at: sock_close+0x7c/0x1e4 net/socket.c:1391
#1: ffff80009248e928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80
2 locks held by syz.3.312/7935:
1 lock held by syz.3.312/7941:
#0: ffff80009248e928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline]
#0: ffff80009248e928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
#0: ffff80009248e928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_dellink+0x27c/0x640 net/core/rtnetlink.c:3556
3 locks held by kworker/u8:11/7979:
#0: ffff0000d3043948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x658/0x156c kernel/workqueue.c:3212
#1: ffff80009e307bc0 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work+0x6ec/0x156c kernel/workqueue.c:3212
#2: ffff80009248e928 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock+0x20/0x2c net/core/rtnetlink.c:80
3 locks held by kworker/u8:13/7981:
3 locks held by kworker/u8:14/7982:
3 locks held by syz-executor/7986:
3 locks held by kworker/0:6/7987:
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