INFO: task syz-executor.1:3841 blocked for more than 143 seconds.
Not tainted 6.8.0-rc3-syzkaller-00010-g6d280f4d760e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:26864 pid:3841 tgid:3834 ppid:2617 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x177f/0x49a0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
request_wait_answer fs/fuse/dev.c:407 [inline]
__fuse_request_send fs/fuse/dev.c:426 [inline]
fuse_simple_request+0x1198/0x1b90 fs/fuse/dev.c:513
fuse_lookup_name+0x332/0x830 fs/fuse/dir.c:386
fuse_lookup+0x182/0x600 fs/fuse/dir.c:425
lookup_one_qstr_excl+0x11f/0x260 fs/namei.c:1608
filename_create+0x297/0x540 fs/namei.c:3892
do_mkdirat+0xbd/0x3a0 fs/namei.c:4137
__do_sys_mkdirat fs/namei.c:4160 [inline]
__se_sys_mkdirat fs/namei.c:4158 [inline]
__x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4158
do_syscall_64+0xf9/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f75e427dda9
RSP: 002b:00007f75e4fb00c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f75e43ac050 RCX: 00007f75e427dda9
RDX: 0000000000000000 RSI: 0000000020004380 RDI: ffffffffffffff9c
RBP: 00007f75e42ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f75e43ac050 R15: 00007ffc18242d88
INFO: task syz-executor.1:3845 blocked for more than 144 seconds.
Not tainted 6.8.0-rc3-syzkaller-00010-g6d280f4d760e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:27568 pid:3845 tgid:3834 ppid:2617 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x177f/0x49a0 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
rwsem_down_write_slowpath+0xeea/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common+0x1ae/0x200 kernel/locking/rwsem.c:1306
inode_lock_nested include/linux/fs.h:837 [inline]
fuse_reverse_inval_entry+0x62/0x730 fs/fuse/dir.c:1351
fuse_notify_inval_entry fs/fuse/dev.c:1504 [inline]
fuse_notify fs/fuse/dev.c:1792 [inline]
fuse_dev_do_write+0x3389/0x54f0 fs/fuse/dev.c:1876
fuse_dev_write+0x149/0x1d0 fs/fuse/dev.c:1960
call_write_iter include/linux/fs.h:2085 [inline]
new_sync_write fs/read_write.c:497 [inline]
vfs_write+0xa81/0xcb0 fs/read_write.c:590
ksys_write+0x1a0/0x2c0 fs/read_write.c:643
do_syscall_64+0xf9/0x240
entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f75e427dda9
RSP: 002b:00007f75e4f8f0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f75e43ac120 RCX: 00007f75e427dda9
RDX: 0000000000000029 RSI: 00000000200043c0 RDI: 0000000000000003
RBP: 00007f75e42ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f75e43ac120 R15: 00007ffc18242d88
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8e130ae0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
#0: ffffffff8e130ae0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
#0: ffffffff8e130ae0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by getty/4812:
#0: ffff88807b8000a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002efe2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
2 locks held by kworker/1:3/5067:
3 locks held by kworker/0:5/5180:
#0: ffff88802af87938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#0: ffff88802af87938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#1: ffffc9000476fd20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#1: ffffc9000476fd20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#2: ffffffff8f362ac8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4129
2 locks held by kworker/0:6/5185:
#0: ffff888014c8e938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#0: ffff888014c8e938 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#1: ffffc9000479fd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#1: ffffc9000479fd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
3 locks held by kworker/u4:1/10959:
3 locks held by kworker/1:0/14911:
#0: ffff88802af87938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#0: ffff88802af87938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#1: ffffc90014befd20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
#1: ffffc90014befd20 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
#2: ffffffff8f362ac8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4129
2 locks held by kworker/u4:5/22053:
3 locks held by kworker/1:6/1602:
4 locks held by syz-executor.3/3049:
#0: ffff88807b8f8420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff888028732c00 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:837 [inline]
#1: ffff888028732c00 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: filename_create+0x260/0x540 fs/namei.c:3891
#2: ffff888047f80b20 (&mm->mmap_lock/1){+.+.}-{3:3}, at: mmap_write_lock_nested include/linux/mmap_lock.h:115 [inline]
#2: ffff888047f80b20 (&mm->mmap_lock/1){+.+.}-{3:3}, at: dup_mmap kernel/fork.c:645 [inline]
#2: ffff888047f80b20 (&mm->mmap_lock/1){+.+.}-{3:3}, at: dup_mm kernel/fork.c:1685 [inline]
#2: ffff888047f80b20 (&mm->mmap_lock/1){+.+.}-{3:3}, at: copy_mm+0x3cb/0x21b0 kernel/fork.c:1734
#3: ffff8880b953c918 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
3 locks held by syz-executor.0/3538:
#0: ffff88807b8f8420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff8880382f7200 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:837 [inline]
#1: ffff8880382f7200 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: do_unlinkat+0x26a/0x830 fs/namei.c:4385
#2: ffff8880b943c918 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
2 locks held by syz-executor.4/3541:
#0: ffff88807b8f8420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff8880382f2200 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:837 [inline]
#1: ffff8880382f2200 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: do_unlinkat+0x26a/0x830 fs/namei.c:4385
3 locks held by syz-executor.1/3841:
#0: ffff88804eee2420 (sb_writers#30){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff8880378c3090 (&type->i_mutex_dir_key#23/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:837 [inline]
#1: ffff8880378c3090 (&type->i_mutex_dir_key#23/1){+.+.}-{3:3}, at: filename_create+0x260/0x540 fs/namei.c:3891
#2: ffff8880378c3508 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd3/0x120 fs/fuse/inode.c:544
2 locks held by syz-executor.1/3845:
#0: ffff888044a42338 (&fc->killsb){++++}-{3:3}, at: fuse_notify_inval_entry fs/fuse/dev.c:1503 [inline]
#0: ffff888044a42338 (&fc->killsb){++++}-{3:3}, at: fuse_notify fs/fuse/dev.c:1792 [inline]
#0: ffff888044a42338 (&fc->killsb){++++}-{3:3}, at: fuse_dev_do_write+0x331f/0x54f0 fs/fuse/dev.c:1876
#1: ffff8880378c3090 (&type->i_mutex_dir_key#23/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:837 [inline]
#1: ffff8880378c3090 (&type->i_mutex_dir_key#23/1){+.+.}-{3:3}, at: fuse_reverse_inval_entry+0x62/0x730 fs/fuse/dir.c:1351
3 locks held by syz-executor.1/4189:
#0: ffff888068352420 (sb_writers#30){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff8880378c7410 (&type->i_mutex_dir_key#23/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:837 [inline]
#1: ffff8880378c7410 (&type->i_mutex_dir_key#23/1){+.+.}-{3:3}, at: filename_create+0x260/0x540 fs/namei.c:3891
#2: ffff8880378c7888 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd3/0x120 fs/fuse/inode.c:544
2 locks held by syz-executor.1/4191:
#0: ffff888043fa7338 (&fc->killsb){++++}-{3:3}, at: fuse_notify_inval_entry fs/fuse/dev.c:1503 [inline]
#0: ffff888043fa7338 (&fc->killsb){++++}-{3:3}, at: fuse_notify fs/fuse/dev.c:1792 [inline]
#0: ffff888043fa7338 (&fc->killsb){++++}-{3:3}, at: fuse_dev_do_write+0x331f/0x54f0 fs/fuse/dev.c:1876
#1: ffff8880378c7410 (&type->i_mutex_dir_key#23/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:837 [inline]
#1: ffff8880378c7410 (&type->i_mutex_dir_key#23/1){+.+.}-{3:3}, at: fuse_reverse_inval_entry+0x62/0x730 fs/fuse/dir.c:1351
3 locks held by syz-executor.1/4410:
#0: ffff888048b5c420 (sb_writers#30){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff8880439d0810 (&type->i_mutex_dir_key#23/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:837 [inline]
#1: ffff8880439d0810 (&type->i_mutex_dir_key#23/1){+.+.}-{3:3}, at: filename_create+0x260/0x540 fs/namei.c:3891
#2: ffff8880439d0c88 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd3/0x120 fs/fuse/inode.c:544
3 locks held by syz-executor.2/4523:
#0: ffff8880454f0420 (sb_writers#30){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff8880378c4b90 (&type->i_mutex_dir_key#23/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:837 [inline]
#1: ffff8880378c4b90 (&type->i_mutex_dir_key#23/1){+.+.}-{3:3}, at: filename_create+0x260/0x540 fs/namei.c:3891
#2: ffff8880378c5008 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd3/0x120 fs/fuse/inode.c:544
2 locks held by syz-executor.2/4527:
#0: ffff88808b214338 (&fc->killsb){++++}-{3:3}, at: fuse_notify_inval_entry fs/fuse/dev.c:1503 [inline]
#0: ffff88808b214338 (&fc->killsb){++++}-{3:3}, at: fuse_notify fs/fuse/dev.c:1792 [inline]
#0: ffff88808b214338 (&fc->killsb){++++}-{3:3}, at: fuse_dev_do_write+0x331f/0x54f0 fs/fuse/dev.c:1876
#1: ffff8880378c4b90 (&type->i_mutex_dir_key#23/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:837 [inline]
#1: ffff8880378c4b90 (&type->i_mutex_dir_key#23/1){+.+.}-{3:3}, at: fuse_reverse_inval_entry+0x62/0x730 fs/fuse/dir.c:1351
1 lock held by syz-executor.1/4547:
#0: ffffffff8e136478 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
#0: ffffffff8e136478 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a3/0x890 kernel/rcu/tree_exp.h:995
3 locks held by syz-executor.2/4672:
#0: ffffffff8f362ac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f362ac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x82c/0x1040 net/core/rtnetlink.c:6612
#1: ffff88808704d3e8 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_open+0x22d/0x420 drivers/net/wireguard/device.c:50
#2: ffffffff8e136478 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline]
#2: ffffffff8e136478 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x46c/0x890 kernel/rcu/tree_exp.h:995
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc3-syzkaller-00010-g6d280f4d760e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xfaf/0xff0 kernel/hung_task.c:379
kthread+0x2ef/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 11 Comm: kworker/u4:0 Not tainted 6.8.0-rc3-syzkaller-00010-g6d280f4d760e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:check_kcov_mode kernel/kcov.c:175 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:236 [inline]
RIP: 0010:__sanitizer_cov_trace_switch+0xbb/0x120 kernel/kcov.c:341
Code: c2 49 39 d2 74 71 4c 8b 74 d6 10 65 8b 05 75 52 70 7e a9 00 01 ff 00 74 11 a9 00 01 00 00 74 de 41 83 bb fc 15 00 00 00 74 d4 <41> 8b 83 d8 15 00 00 83 f8 03 75 c8 49 8b 8b e0 15 00 00 45 8b bb
RSP: 0000:ffffc90000107198 EFLAGS: 00000246
RAX: 0000000080000000 RBX: 0000000000000000 RCX: ffff88801729bb80
RDX: 000000000000001e RSI: ffffffff8f5de000 RDI: 0000000000000001
RBP: ffffc900001075d0 R08: 0000000000000001 R09: ffffffff8ade3038
R10: 000000000000002b R11: ffff88801729bb80 R12: ffff88804ad1247c
R13: dffffc0000000000 R14: 00000000000000bf R15: ffff88804ad1247c
FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcc342d56c6 CR3: 0000000029d4c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
_ieee802_11_parse_elems_full+0xc18/0x4340 net/mac80211/util.c:1106
ieee802_11_parse_elems_full+0xd47/0x2470 net/mac80211/util.c:1647
ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2291 [inline]
ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2298 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1573 [inline]
ieee80211_ibss_rx_queued_mgmt+0x4b7/0x2cd0 net/mac80211/ibss.c:1604
ieee80211_iface_process_skb net/mac80211/iface.c:1589 [inline]
ieee80211_iface_work+0x809/0xd90 net/mac80211/iface.c:1643
cfg80211_wiphy_work+0x221/0x260 net/wireless/core.c:437
process_one_work kernel/workqueue.c:2633 [inline]
process_scheduled_works+0x913/0x1420 kernel/workqueue.c:2706
worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
kthread+0x2ef/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242