INFO: task syz-executor.4:20776 blocked for more than 143 seconds.
Not tainted 6.3.0-rc7-syzkaller-00043-gaf67688dca57 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:25608 pid:20776 ppid:20719 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5307 [inline]
__schedule+0xc91/0x5770 kernel/sched/core.c:6625
schedule+0xde/0x1a0 kernel/sched/core.c:6701
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6760
rwsem_down_write_slowpath+0x3e2/0x1220 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x1d2/0x200 kernel/locking/rwsem.c:1574
inode_lock include/linux/fs.h:758 [inline]
lock_mount+0x8a/0x2e0 fs/namespace.c:2294
do_new_mount_fc fs/namespace.c:2985 [inline]
do_new_mount fs/namespace.c:3044 [inline]
path_mount+0x14e0/0x1e40 fs/namespace.c:3372
do_mount fs/namespace.c:3385 [inline]
__do_sys_mount fs/namespace.c:3594 [inline]
__se_sys_mount fs/namespace.c:3571 [inline]
__x64_sys_mount+0x283/0x300 fs/namespace.c:3571
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: 0033:0x7fc31fa8d69a
RSP: 002b:00007fc3208b6f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00000000000010fd RCX: 00007fc31fa8d69a
RDX: 0000000020000000 RSI: 0000000020000040 RDI: 00007fc3208b6fe0
RBP: 00007fc3208b7020 R08: 00007fc3208b7020 R09: 000000000120c081
R10: 000000000120c081 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000040 R14: 00007fc3208b6fe0 R15: 0000000020000b80
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8c794a70 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8c794770 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/28:
#0: ffffffff8c7955c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6495
2 locks held by getty/4751:
#0: ffff888027aab098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
1 lock held by syz-executor.4/20776:
#0: ffff88803c6bd320 (&sb->s_type->i_mutex_key#26){++++}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
#0: ffff88803c6bd320 (&sb->s_type->i_mutex_key#26){++++}-{3:3}, at: lock_mount+0x8a/0x2e0 fs/namespace.c:2294
1 lock held by syz-executor.4/20782:
#0: ffff88803c6bd320 (&sb->s_type->i_mutex_key#26){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:768 [inline]
#0: ffff88803c6bd320 (&sb->s_type->i_mutex_key#26){++++}-{3:3}, at: lookup_slow fs/namei.c:1702 [inline]
#0: ffff88803c6bd320 (&sb->s_type->i_mutex_key#26){++++}-{3:3}, at: walk_component+0x332/0x5a0 fs/namei.c:1994
1 lock held by syz-executor.4/20887:
#0: ffff88803c5192d8 (&sb->s_type->i_mutex_key#26){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:768 [inline]
#0: ffff88803c5192d8 (&sb->s_type->i_mutex_key#26){++++}-{3:3}, at: lookup_slow fs/namei.c:1702 [inline]
#0: ffff88803c5192d8 (&sb->s_type->i_mutex_key#26){++++}-{3:3}, at: walk_component+0x332/0x5a0 fs/namei.c:1994
1 lock held by syz-executor.4/21555:
#0: ffff8880816b80e0 (&type->s_umount_key#58/1){+.+.}-{3:3}, at: alloc_super+0x22e/0xb60 fs/super.c:228
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.3.0-rc7-syzkaller-00043-gaf67688dca57 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
nmi_cpu_backtrace+0x29c/0x350 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x2a4/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xe16/0x1090 kernel/hung_task.c:379
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 52 Comm: kworker/u4:3 Not tainted 6.3.0-rc7-syzkaller-00043-gaf67688dca57 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Workqueue: phy13 ieee80211_iface_work
RIP: 0010:write_comp_data+0x7/0x90 kernel/kcov.c:230
Code: 81 e2 00 01 ff 00 75 10 65 48 8b 04 25 80 b8 03 00 48 8b 80 68 15 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 65 8b 05 21 d2 80 7e <49> 89 f1 89 c6 49 89 d2 81 e6 00 01 00 00 49 89 f8 65 48 8b 14 25
RSP: 0018:ffffc90000bd7540 EFLAGS: 00000206
RAX: 0000000080000000 RBX: 000000000000000c RCX: ffffffff8988056c
RDX: 0000000000000000 RSI: 0000000000000038 RDI: 0000000000000001
RBP: ffffffff8b7d7ce0 R08: 0000000000000001 R09: 0000000000000032
R10: 0000000000000000 R11: 0000000000094001 R12: 0000000000000000
R13: 0000000000000001 R14: 000000000000002b R15: 0000000000000006
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c01301e6c0 CR3: 000000002a6c6000 CR4: 0000000000350ef0
Call Trace:
__sanitizer_cov_trace_switch+0x54/0x90 kernel/kcov.c:340
_ieee802_11_parse_elems_full+0x2ec/0x3130 net/mac80211/util.c:1075
ieee802_11_parse_elems_full+0x785/0x1340 net/mac80211/util.c:1628
ieee802_11_parse_elems_crc.constprop.0+0x99/0xd0 net/mac80211/ieee80211_i.h:2265
ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2272 [inline]
ieee80211_bss_info_update+0x410/0xb50 net/mac80211/scan.c:212
ieee80211_rx_bss_info net/mac80211/ibss.c:1120 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1609 [inline]
ieee80211_ibss_rx_queued_mgmt+0x19c9/0x3030 net/mac80211/ibss.c:1638
ieee80211_iface_process_skb net/mac80211/iface.c:1583 [inline]
ieee80211_iface_work+0xa4d/0xd70 net/mac80211/iface.c:1637
process_one_work+0x991/0x15c0 kernel/workqueue.c:2390
worker_thread+0x669/0x1090 kernel/workqueue.c:2537
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308