INFO: task syz.1.19:5424 blocked for more than 143 seconds.
Not tainted 6.11.0-rc6-syzkaller-00070-gc763c4339688 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.19 state:D stack:25912 pid:5424 tgid:5421 ppid:5224 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x1d7/0x220 kernel/locking/rwsem.c:1580
inode_lock include/linux/fs.h:800 [inline]
chown_common+0x3e1/0x850 fs/open.c:784
do_fchownat+0x16a/0x240 fs/open.c:825
__do_sys_lchown fs/open.c:850 [inline]
__se_sys_lchown fs/open.c:848 [inline]
__x64_sys_lchown+0x85/0xa0 fs/open.c:848
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff4f317cef9
RSP: 002b:00007ff4f4040038 EFLAGS: 00000246 ORIG_RAX: 000000000000005e
RAX: ffffffffffffffda RBX: 00007ff4f3336058 RCX: 00007ff4f317cef9
RDX: 0000000039323420 RSI: 0000000000000000 RDI: 0000000020000040
RBP: 00007ff4f31ef01e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007ff4f3336058 R15: 00007ffdd461e558
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6626
1 lock held by kworker/u8:5/72:
3 locks held by kworker/0:2/1186:
2 locks held by getty/4989:
#0: ffff8880306d70a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ac/0x1e00 drivers/tty/n_tty.c:2211
3 locks held by syz.1.19/5422:
2 locks held by syz.1.19/5424:
#0: ffff888023568420 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff888059e667a8 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock include/linux/fs.h:800 [inline]
#1: ffff888059e667a8 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: chown_common+0x3e1/0x850 fs/open.c:784
2 locks held by syz.1.191/6863:
2 locks held by syz.2.194/6874:
1 lock held by syz.4.196/6876:
#0: ffff888025ac0360 (&lo->lo_mutex){+.+.}-{3:3}, at: loop_set_status+0x2a/0x900 drivers/block/loop.c:1252
2 locks held by syz.0.198/6885:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc6-syzkaller-00070-gc763c4339688 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
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:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xff4/0x1040 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 2518 Comm: kworker/u8:7 Not tainted 6.11.0-rc6-syzkaller-00070-gc763c4339688 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:ieee80211_rx_bss_info net/mac80211/ibss.c:1092 [inline]
RIP: 0010:ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1579 [inline]
RIP: 0010:ieee80211_ibss_rx_queued_mgmt+0x506/0x2d70 net/mac80211/ibss.c:1606
Code: 89 6c 24 10 49 8d 9d 48 08 00 00 49 89 dd 49 c1 ed 03 43 80 7c 25 00 00 74 08 48 89 df e8 52 11 d8 f6 48 89 5c 24 38 48 8b 13 <49> 8d 76 4c 49 89 f6 49 c1 ee 03 43 0f b6 04 26 84 c0 48 89 74 24
RSP: 0018:ffffc900089d7840 EFLAGS: 00000246
RAX: ffff88805de6d800 RBX: ffff888063581508 RCX: ffff88802f4f9e00
RDX: ffff88802ae08e40 RSI: ffffffffffffffea RDI: 0000000000000000
RBP: ffffc900089d7ae8 R08: ffffffff8b2f0b6f R09: 00000000000000f2
R10: ffffc900089d7710 R11: fffff5200113aeea R12: dffffc0000000000
R13: 1ffff1100c6b02a1 R14: ffff88802aece140 R15: 1ffff9200113af20
FS: 0000000000000000(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c33ef63 CR3: 000000006ab2c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ieee80211_iface_process_skb net/mac80211/iface.c:1588 [inline]
ieee80211_iface_work+0x8a5/0xf20 net/mac80211/iface.c:1642
cfg80211_wiphy_work+0x2db/0x490 net/wireless/core.c:440
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
worker_thread+0x86d/0xd10 kernel/workqueue.c:3389
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244