INFO: task syz-executor.3:4563 blocked for more than 144 seconds.
Not tainted 6.1.0-rc8-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:28448 pid:4563 ppid:4112 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5209 [inline]
__schedule+0xae9/0x53f0 kernel/sched/core.c:6521
schedule+0xde/0x1b0 kernel/sched/core.c:6597
rwsem_down_write_slowpath+0x600/0x12e0 kernel/locking/rwsem.c:1190
__down_write_common kernel/locking/rwsem.c:1305 [inline]
__down_write_common kernel/locking/rwsem.c:1302 [inline]
__down_write kernel/locking/rwsem.c:1314 [inline]
down_write+0x1e8/0x220 kernel/locking/rwsem.c:1563
inode_lock include/linux/fs.h:756 [inline]
process_measurement+0x168d/0x18b0 security/integrity/ima/ima_main.c:241
ima_file_check+0xb0/0x100 security/integrity/ima/ima_main.c:517
do_open fs/namei.c:3559 [inline]
path_openat+0x1611/0x2860 fs/namei.c:3714
do_filp_open+0x1ba/0x410 fs/namei.c:3741
do_sys_openat2+0x16d/0x4c0 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_open fs/open.c:1334 [inline]
__se_sys_open fs/open.c:1330 [inline]
__x64_sys_open+0x11d/0x1c0 fs/open.c:1330
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f1ebc88c0d9
RSP: 002b:00007f1ebd540168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f1ebc9ac120 RCX: 00007f1ebc88c0d9
RDX: 0000000000000000 RSI: 0000000000040280 RDI: 0000000020000280
RBP: 00007f1ebc8e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcfb3f590f R14: 00007f1ebd540300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8c58f0b0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8c58edb0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/27:
#0: ffffffff8c58fc00 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x57/0x264 kernel/locking/lockdep.c:6494
2 locks held by dhcpcd/3207:
#0: ffffffff8de911a8 (vlan_ioctl_mutex){+.+.}-{3:3}, at: sock_ioctl+0x485/0x680 net/socket.c:1248
#1: ffffffff8deb4ea8 (rtnl_mutex){+.+.}-{3:3}, at: vlan_ioctl_handler+0xbb/0xee0 net/8021q/vlan.c:553
2 locks held by getty/3307:
#0: ffff88814b66d098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
2 locks held by kworker/u4:6/4230:
#0: ffff8880b9a3b158 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2f/0x120 kernel/sched/core.c:537
#1: ffffc900054ffda8 ((work_completion)(&sdata->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
4 locks held by syz-executor.3/4534:
#0: ffff8880527e8460 (sb_writers#4){.+.+}-{0:0}, at: do_open fs/namei.c:3550 [inline]
#0: ffff8880527e8460 (sb_writers#4){.+.+}-{0:0}, at: path_openat+0x19ee/0x2860 fs/namei.c:3714
#1: ffff8880707dac20 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff8880707dac20 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: do_truncate+0x12e/0x200 fs/open.c:63
#2: ffff8880707dadc0 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:801 [inline]
#2: ffff8880707dadc0 (mapping.invalidate_lock){++++}-{3:3}, at: ext4_setattr+0x734/0x2b30 fs/ext4/inode.c:5453
#3: ffff8880707daaa8 (&ei->i_data_sem){++++}-{3:3}, at: ext4_truncate+0x68d/0x1530 fs/ext4/inode.c:4259
2 locks held by syz-executor.3/4563:
#0: ffff8880527e8460 (sb_writers#4){.+.+}-{0:0}, at: do_open fs/namei.c:3550 [inline]
#0: ffff8880527e8460 (sb_writers#4){.+.+}-{0:0}, at: path_openat+0x19ee/0x2860 fs/namei.c:3714
#1: ffff8880707dac20 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff8880707dac20 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: process_measurement+0x168d/0x18b0 security/integrity/ima/ima_main.c:241
3 locks held by syz-executor.1/6797:
#0: ffffffff8dea1290 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2f9/0x760 net/core/net_namespace.c:474
#1: ffffffff8deb4ea8 (rtnl_mutex){+.+.}-{3:3}, at: sit_exit_batch_net+0x8c/0x750 net/ipv6/sit.c:1881
#2: ffffffff8c59a8b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
#2: ffffffff8c59a8b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x5df/0x780 kernel/rcu/tree_exp.h:946
2 locks held by syz-executor.4/6820:
#0: ffff888053f31098 (&tty->ldisc_sem){++++}-{0:0}, at: __tty_ldisc_lock drivers/tty/tty_ldisc.c:290 [inline]
#0: ffff888053f31098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_lock_pair_timeout drivers/tty/tty_ldisc.c:353 [inline]
#0: ffff888053f31098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_lock_pair drivers/tty/tty_ldisc.c:367 [inline]
#0: ffff888053f31098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_release+0x7d/0x2a0 drivers/tty/tty_ldisc.c:775
#1: ffffffff8deb4ea8 (rtnl_mutex){+.+.}-{3:3}, at: unregister_netdev+0x12/0x30 net/core/dev.c:10905
1 lock held by syz-executor.5/6836:
#0: ffffffff8deb4ea8 (rtnl_mutex){+.+.}-{3:3}, at: __netlink_dump_start+0x16e/0x910 net/netlink/af_netlink.c:2344
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 6.1.0-rc8-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x24/0x18a lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x333/0x3c0 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+0xc75/0xfc0 kernel/hung_task.c:377
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4230 Comm: kworker/u4:6 Not tainted 6.1.0-rc8-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Workqueue: phy16 ieee80211_iface_work
RIP: 0010:match_held_lock+0x72/0xc0 kernel/locking/lockdep.c:5145
Code: 0f af c2 0f b7 53 20 81 e2 ff 1f 00 00 48 39 d0 0f 94 c0 48 83 c4 08 0f b6 c0 5b c3 31 f6 e8 85 fe ff ff 48 85 c0 75 b2 31 c0 <48> 83 c4 08 5b c3 48 83 c4 08 b8 01 00 00 00 5b c3 e8 98 88 16 fa
RSP: 0018:ffffc900054ffb70 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff88801c7fc4d0 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8c58fb40 RDI: ffff88801c7fc4d0
RBP: ffffffff8c58fb40 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000092080 R12: ffff88801c7fba80
R13: ffff88801c7fc4d0 R14: 00000000ffffffff R15: ffff88801c7fc4d0
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555555d91848 CR3: 000000000c28e000 CR4: 0000000000350ef0
Call Trace:
__lock_is_held kernel/locking/lockdep.c:5409 [inline]
lock_is_held_type+0xab/0x140 kernel/locking/lockdep.c:5711
lock_is_held include/linux/lockdep.h:283 [inline]
rcu_read_lock_sched_held+0x3e/0x70 kernel/rcu/update.c:125
trace_kfree include/trace/events/kmem.h:94 [inline]
kfree+0x126/0x1a0 mm/slab_common.c:994
skb_free_head+0xac/0x110 net/core/skbuff.c:760
skb_release_data+0x5f1/0x870 net/core/skbuff.c:789
skb_release_all net/core/skbuff.c:854 [inline]
__kfree_skb net/core/skbuff.c:868 [inline]
kfree_skb_reason+0x18a/0x4b0 net/core/skbuff.c:891
kfree_skb include/linux/skbuff.h:1216 [inline]
ieee80211_iface_work+0x357/0xd30 net/mac80211/iface.c:1686
process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289
worker_thread+0x669/0x1090 kernel/workqueue.c:2436
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306