INFO: task syz-executor.0:5039 blocked for more than 143 seconds.
Not tainted 6.6.0-rc7-syzkaller-00195-g2af9b20dbb39 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:19592 pid:5039 ppid:1 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x196c/0x4af0 kernel/sched/core.c:6695
schedule+0xc3/0x180 kernel/sched/core.c:6771
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6830
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0x6a3/0xd60 kernel/locking/mutex.c:747
fuse_lock_inode+0xd3/0x120 fs/fuse/inode.c:495
fuse_lookup+0x115/0x600 fs/fuse/dir.c:424
__lookup_slow+0x282/0x3e0 fs/namei.c:1694
lookup_slow+0x53/0x70 fs/namei.c:1711
walk_component fs/namei.c:2002 [inline]
link_path_walk+0x9c8/0xe70 fs/namei.c:2329
path_openat+0x249/0x3180 fs/namei.c:3793
do_filp_open+0x234/0x490 fs/namei.c:3824
do_sys_openat2+0x13e/0x1d0 fs/open.c:1422
do_sys_open fs/open.c:1437 [inline]
__do_sys_openat fs/open.c:1453 [inline]
__se_sys_openat fs/open.c:1448 [inline]
__x64_sys_openat+0x247/0x290 fs/open.c:1448
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6e2667c541
RSP: 002b:00007ffd2b37caf0 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f6e2667c541
RDX: 0000000000090800 RSI: 00007f6e266c745d RDI: 00000000ffffff9c
RBP: 00007ffd2b37cbbc R08: 0000000000000000 R09: 00007ffd2b3f20b0
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000
R13: 000000000000ef0e R14: 000000000000eea6 R15: 0000000000000006
INFO: task syz-executor.0:5058 blocked for more than 143 seconds.
Not tainted 6.6.0-rc7-syzkaller-00195-g2af9b20dbb39 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:25936 pid:5058 ppid:5039 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x196c/0x4af0 kernel/sched/core.c:6695
schedule+0xc3/0x180 kernel/sched/core.c:6771
request_wait_answer fs/fuse/dev.c:407 [inline]
__fuse_request_send fs/fuse/dev.c:426 [inline]
fuse_simple_request+0x1192/0x1b80 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_slow+0x282/0x3e0 fs/namei.c:1694
lookup_slow+0x53/0x70 fs/namei.c:1711
walk_component fs/namei.c:2002 [inline]
link_path_walk+0x9c8/0xe70 fs/namei.c:2329
path_openat+0x249/0x3180 fs/namei.c:3793
do_filp_open+0x234/0x490 fs/namei.c:3824
do_sys_openat2+0x13e/0x1d0 fs/open.c:1422
do_sys_open fs/open.c:1437 [inline]
__do_sys_openat fs/open.c:1453 [inline]
__se_sys_openat fs/open.c:1448 [inline]
__x64_sys_openat+0x247/0x290 fs/open.c:1448
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6e2667b6e0
RSP: 002b:00007f6e27452e20 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f6e2667b6e0
RDX: 0000000000000002 RSI: 00007f6e27452f40 RDI: 00000000ffffff9c
RBP: 00007f6e27452f40 R08: 0000000000000000 R09: 00000000000004a0
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000004
R13: 00007f6e27452f3c R14: 00007f6e27452f40 R15: 00007f6e1d5ff000
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8d32c560 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:303 [inline]
#0: ffffffff8d32c560 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:749 [inline]
#0: ffffffff8d32c560 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6613
2 locks held by getty/4778:
#0: ffff88802b3ca0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900015c02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b1/0x1dc0 drivers/tty/n_tty.c:2206
2 locks held by syz-executor.0/5039:
#0: ffff888074138150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#0: ffff888074138150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1710
#1: ffff8880741385c8 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd3/0x120 fs/fuse/inode.c:495
2 locks held by syz-executor.0/5058:
#0: ffff888074138150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:812 [inline]
#0: ffff888074138150 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1710
#1: ffff8880741385c8 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xd3/0x120 fs/fuse/inode.c:495
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.6.0-rc7-syzkaller-00195-g2af9b20dbb39 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x310 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+0xfa9/0xff0 kernel/hung_task.c:379
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 157 Comm: kworker/u4:6 Not tainted 6.6.0-rc7-syzkaller-00195-g2af9b20dbb39 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:stack_access_ok arch/x86/kernel/unwind_orc.c:393 [inline]
RIP: 0010:deref_stack_reg+0x46/0x250 arch/x86/kernel/unwind_orc.c:403
Code: 00 00 00 fc ff df e8 09 42 50 00 48 8d 6b 08 49 89 ec 49 c1 ec 03 43 80 3c 3c 00 74 08 48 89 ef e8 0f f1 aa 00 48 89 6c 24 10 <4c> 89 74 24 18 48 8b 43 08 48 89 44 24 20 48 8d 6b 10 49 89 ed 49
RSP: 0018:ffffc90002ddea68 EFLAGS: 00000246
RAX: ffffffff813ddb57 RBX: ffffc90002ddeba0 RCX: ffff8880163ad940
RDX: 0000000000000000 RSI: ffffc90002ddf6d0 RDI: ffffc90002ddeba0
RBP: ffffc90002ddeba8 R08: 0000000000000005 R09: ffffffff813dc790
R10: 0000000000000003 R11: ffff8880163ad940 R12: 1ffff920005bbd75
R13: dffffc0000000000 R14: ffffc90002ddebe0 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f152b92028 CR3: 0000000021f6c000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
unwind_next_frame+0x1ab9/0x29e0 arch/x86/kernel/unwind_orc.c:648
arch_stack_walk+0x146/0x1a0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x117/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
____kasan_kmalloc mm/kasan/common.c:374 [inline]
__kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:383
kasan_kmalloc include/linux/kasan.h:198 [inline]
__do_kmalloc_node mm/slab_common.c:1026 [inline]
__kmalloc+0xb9/0x230 mm/slab_common.c:1039
kmalloc include/linux/slab.h:603 [inline]
kzalloc include/linux/slab.h:720 [inline]
ieee802_11_parse_elems_full+0xd7/0x2460 net/mac80211/util.c:1602
ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2327 [inline]
ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2334 [inline]
ieee80211_inform_bss+0x146/0x1050 net/mac80211/scan.c:79
rdev_inform_bss+0x11b/0x470 net/wireless/rdev-ops.h:418
cfg80211_inform_single_bss_frame_data net/wireless/scan.c:2889 [inline]
cfg80211_inform_bss_frame_data+0xe85/0x1870 net/wireless/scan.c:2916
ieee80211_bss_info_update+0x834/0xb50 net/mac80211/scan.c:211
ieee80211_rx_bss_info net/mac80211/ibss.c:1124 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1613 [inline]
ieee80211_ibss_rx_queued_mgmt+0x192d/0x2ce0 net/mac80211/ibss.c:1642
ieee80211_iface_process_skb net/mac80211/iface.c:1604 [inline]
ieee80211_iface_work+0x7bd/0xcf0 net/mac80211/iface.c:1658
cfg80211_wiphy_work+0x21e/0x250 net/wireless/core.c:435
process_one_work kernel/workqueue.c:2630 [inline]
process_scheduled_works+0x90f/0x1400 kernel/workqueue.c:2703
worker_thread+0xa5f/0xff0 kernel/workqueue.c:2784
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:304