INFO: task syz-executor.1:17286 blocked for more than 143 seconds.
      Not tainted 6.9.0-rc4-syzkaller-00214-g13a2e429f644 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:29088 pid:17286 tgid:17276 ppid:12021  flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5409 [inline]
 __schedule+0xf15/0x5d00 kernel/sched/core.c:6746
 __schedule_loop kernel/sched/core.c:6823 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6838
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895
 rwsem_down_read_slowpath+0x61e/0xb20 kernel/locking/rwsem.c:1086
 __down_read_common kernel/locking/rwsem.c:1250 [inline]
 __down_read kernel/locking/rwsem.c:1263 [inline]
 down_read+0x124/0x330 kernel/locking/rwsem.c:1528
 inode_lock_shared include/linux/fs.h:805 [inline]
 lookup_slow fs/namei.c:1708 [inline]
 walk_component+0x342/0x5b0 fs/namei.c:2004
 lookup_last fs/namei.c:2461 [inline]
 path_lookupat+0x17f/0x770 fs/namei.c:2485
 filename_lookup+0x1e5/0x5b0 fs/namei.c:2514
 user_path_at_empty+0x42/0x60 fs/namei.c:2921
 user_path_at include/linux/namei.h:57 [inline]
 path_setxattr+0xa5/0x1e0 fs/xattr.c:666
 __do_sys_lsetxattr fs/xattr.c:694 [inline]
 __se_sys_lsetxattr fs/xattr.c:690 [inline]
 __x64_sys_lsetxattr+0xc1/0x160 fs/xattr.c:690
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcf/0x260 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f28c007dea9
RSP: 002b:00007f28c0d880c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd
RAX: ffffffffffffffda RBX: 00007f28c01ac050 RCX: 00007f28c007dea9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200002c0
RBP: 00007f28c00ca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f28c01ac050 R15: 00007ffca5035c28
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/30:
 #0: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
 #0: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
 #0: ffffffff8d7b0e20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
2 locks held by kworker/u8:4/60:
2 locks held by getty/4833:
 #0: ffff88802ae970a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
 #1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc8/0x1490 drivers/tty/n_tty.c:2201
2 locks held by syz-executor.1/17278:
1 lock held by syz-executor.1/17286:
 #0: ffff8880518d8188 (&type->i_mutex_dir_key#30){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:805 [inline]
 #0: ffff8880518d8188 (&type->i_mutex_dir_key#30){.+.+}-{3:3}, at: lookup_slow fs/namei.c:1708 [inline]
 #0: ffff8880518d8188 (&type->i_mutex_dir_key#30){.+.+}-{3:3}, at: walk_component+0x342/0x5b0 fs/namei.c:2004
3 locks held by syz-executor.3/18089:
1 lock held by syz-executor.2/18548:
 #0: ffffffff8d7bc538 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline]
 #0: ffffffff8d7bc538 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x403/0x7a0 kernel/rcu/tree_exp.h:939
3 locks held by syz-executor.4/18678:
1 lock held by syz-executor.2/18702:
 #0: ffff88802f556420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x232c/0x2710 kernel/signal.c:2896
2 locks held by syz-executor.3/18729:

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 30 Comm: khungtaskd Not tainted 6.9.0-rc4-syzkaller-00214-g13a2e429f644 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
 nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
 watchdog+0xf86/0x1240 kernel/hung_task.c:380
 kthread+0x2c1/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 50 Comm: kworker/u8:3 Not tainted 6.9.0-rc4-syzkaller-00214-g13a2e429f644 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:__orc_find+0xc9/0x130 arch/x86/kernel/unwind_orc.c:106
Code: 0c 32 4c 89 fa 83 e2 07 83 c2 03 38 ca 7c 04 84 c9 75 73 49 63 17 4c 89 e7 4d 8d 2c 17 4c 89 ee e8 ac b0 50 00 4d 39 ec 73 95 <e8> 52 b6 50 00 49 8d 6f fc e8 49 b6 50 00 48 39 dd 73 99 e8 3f b6
RSP: 0018:ffffc90000bb7710 EFLAGS: 00000287
RAX: 0000000000000000 RBX: ffffffff900a69c4 RCX: ffffffff813d0bf4
RDX: ffff888015b58000 RSI: ffffffff88b1512d RDI: 0000000000000006
RBP: ffffffff900a69e4 R08: 0000000000000006 R09: ffffffff88b1512d
R10: ffffffff88b15137 R11: 0000000000000003 R12: ffffffff88b1512d
R13: ffffffff88b15137 R14: dffffc0000000000 R15: ffffffff900a69d4
FS:  0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc47cbbd000 CR3: 000000002b5d8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 orc_find arch/x86/kernel/unwind_orc.c:227 [inline]
 unwind_next_frame+0x335/0x23a0 arch/x86/kernel/unwind_orc.c:494
 arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
 poison_slab_object mm/kasan/common.c:240 [inline]
 __kasan_slab_free+0x11d/0x1a0 mm/kasan/common.c:256
 kasan_slab_free include/linux/kasan.h:184 [inline]
 slab_free_hook mm/slub.c:2106 [inline]
 slab_free mm/slub.c:4280 [inline]
 kmem_cache_free+0x12e/0x380 mm/slub.c:4344
 kfree_skbmem+0x10e/0x200 net/core/skbuff.c:1159
 __kfree_skb net/core/skbuff.c:1217 [inline]
 kfree_skb_reason+0x13a/0x210 net/core/skbuff.c:1252
 kfree_skb include/linux/skbuff.h:1262 [inline]
 ieee80211_iface_work+0x435/0xf00 net/mac80211/iface.c:1661
 cfg80211_wiphy_work+0x255/0x330 net/wireless/core.c:437
 process_one_work+0x9a9/0x1ac0 kernel/workqueue.c:3254
 process_scheduled_works kernel/workqueue.c:3335 [inline]
 worker_thread+0x6c8/0xf70 kernel/workqueue.c:3416
 kthread+0x2c1/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>