INFO: task syz-executor.1:32433 blocked for more than 143 seconds.
      Not tainted 6.1.0-rc5-syzkaller-00015-g81e7cfa3a9eb #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:19744 pid:32433 ppid:23870  flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5191 [inline]
 __schedule+0x8c9/0xd70 kernel/sched/core.c:6503
 schedule+0xcb/0x190 kernel/sched/core.c:6579
 io_schedule+0x83/0x100 kernel/sched/core.c:8723
 bit_wait_io+0xe/0xc0 kernel/sched/wait_bit.c:209
 __wait_on_bit_lock+0xbb/0x1a0 kernel/sched/wait_bit.c:90
 out_of_line_wait_on_bit_lock+0x1c3/0x240 kernel/sched/wait_bit.c:117
 wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline]
 __lock_buffer fs/buffer.c:69 [inline]
 lock_buffer include/linux/buffer_head.h:397 [inline]
 write_dirty_buffer+0xb8/0x160 fs/buffer.c:2713
 fsync_buffers_list fs/buffer.c:702 [inline]
 sync_mapping_buffers+0x58f/0xed0 fs/buffer.c:548
 ext4_sync_parent fs/ext4/fsync.c:70 [inline]
 ext4_fsync_nojournal fs/ext4/fsync.c:97 [inline]
 ext4_sync_file+0x765/0x850 fs/ext4/fsync.c:170
 generic_write_sync include/linux/fs.h:2883 [inline]
 ext4_buffered_write_iter+0x308/0x3a0 fs/ext4/file.c:292
 ext4_file_write_iter+0x1d0/0x18d0
 do_iter_write+0x6c2/0xc20 fs/read_write.c:861
 ovl_write_iter+0x8b9/0xd70 fs/overlayfs/file.c:381
 call_write_iter include/linux/fs.h:2191 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x7dc/0xc50 fs/read_write.c:584
 ksys_write+0x177/0x2a0 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fc245c8b639
RSP: 002b:00007fc246ad8168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fc245dabf80 RCX: 00007fc245c8b639
RDX: 000000000000fea0 RSI: 0000000020000040 RDI: 0000000000000006
RBP: 00007fc245ce6ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffda34bd51f R14: 00007fc246ad8300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.1:32441 blocked for more than 143 seconds.
      Not tainted 6.1.0-rc5-syzkaller-00015-g81e7cfa3a9eb #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:19040 pid:32441 ppid:23870  flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5191 [inline]
 __schedule+0x8c9/0xd70 kernel/sched/core.c:6503
 schedule+0xcb/0x190 kernel/sched/core.c:6579
 io_schedule+0x83/0x100 kernel/sched/core.c:8723
 bit_wait_io+0xe/0xc0 kernel/sched/wait_bit.c:209
 __wait_on_bit_lock+0xbb/0x1a0 kernel/sched/wait_bit.c:90
 out_of_line_wait_on_bit_lock+0x1c3/0x240 kernel/sched/wait_bit.c:117
 wait_on_bit_lock_io include/linux/wait_bit.h:208 [inline]
 __lock_buffer fs/buffer.c:69 [inline]
 lock_buffer include/linux/buffer_head.h:397 [inline]
 __sync_dirty_buffer+0x107/0x330 fs/buffer.c:2732
 __ext4_handle_dirty_metadata+0x29a/0x810 fs/ext4/ext4_jbd2.c:381
 ext4_handle_dirty_dirblock+0x363/0x6b0 fs/ext4/namei.c:438
 ext4_finish_convert_inline_dir+0x58a/0x700 fs/ext4/inline.c:1182
 ext4_convert_inline_data_nolock+0x63c/0x820 fs/ext4/inline.c:1259
 ext4_try_add_inline_entry+0x683/0x990 fs/ext4/inline.c:1332
 ext4_add_entry+0x5a4/0xeb0 fs/ext4/namei.c:2385
 ext4_add_nondir+0x96/0x260 fs/ext4/namei.c:2772
 ext4_create+0x36c/0x560 fs/ext4/namei.c:2817
 vfs_create+0x302/0x490 fs/namei.c:3115
 ovl_do_create+0x8a/0xc0 fs/overlayfs/overlayfs.h:176
 ovl_create_real+0x3fd/0x4f0 fs/overlayfs/dir.c:188
 ovl_create_upper fs/overlayfs/dir.c:335 [inline]
 ovl_create_or_link+0x8ea/0x1670 fs/overlayfs/dir.c:613
 ovl_create_object+0x23e/0x370 fs/overlayfs/dir.c:649
 lookup_open fs/namei.c:3413 [inline]
 open_last_lookups fs/namei.c:3481 [inline]
 path_openat+0x12d0/0x2df0 fs/namei.c:3710
 do_filp_open+0x264/0x4f0 fs/namei.c:3740
 do_sys_openat2+0x124/0x4e0 fs/open.c:1310
 do_sys_open fs/open.c:1326 [inline]
 __do_sys_openat fs/open.c:1342 [inline]
 __se_sys_openat fs/open.c:1337 [inline]
 __x64_sys_openat+0x243/0x290 fs/open.c:1337
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fc245c8b639
RSP: 002b:00007fc246ab7168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fc245dac050 RCX: 00007fc245c8b639
RDX: 000000000000275a RSI: 00000000200001c0 RDI: ffffffffffffff9c
RBP: 00007fc245ce6ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffda34bd51f R14: 00007fc246ab7300 R15: 0000000000022000
 </TASK>
INFO: task syz-executor.1:32442 blocked for more than 144 seconds.
      Not tainted 6.1.0-rc5-syzkaller-00015-g81e7cfa3a9eb #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:24016 pid:32442 ppid:23870  flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5191 [inline]
 __schedule+0x8c9/0xd70 kernel/sched/core.c:6503
 schedule+0xcb/0x190 kernel/sched/core.c:6579
 rwsem_down_write_slowpath+0xfc1/0x1480 kernel/locking/rwsem.c:1190
 __down_write_common kernel/locking/rwsem.c:1305 [inline]
 __down_write kernel/locking/rwsem.c:1314 [inline]
 down_write+0x231/0x270 kernel/locking/rwsem.c:1563
 inode_lock include/linux/fs.h:756 [inline]
 open_last_lookups fs/namei.c:3478 [inline]
 path_openat+0x7b9/0x2df0 fs/namei.c:3710
 do_filp_open+0x264/0x4f0 fs/namei.c:3740
 do_sys_openat2+0x124/0x4e0 fs/open.c:1310
 do_sys_open fs/open.c:1326 [inline]
 __do_sys_creat fs/open.c:1402 [inline]
 __se_sys_creat fs/open.c:1396 [inline]
 __x64_sys_creat+0x11f/0x160 fs/open.c:1396
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fc245c8b639
RSP: 002b:00007fc246a96168 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007fc245dac120 RCX: 00007fc245c8b639
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000000
RBP: 00007fc245ce6ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffda34bd51f R14: 00007fc246a96300 R15: 0000000000022000
 </TASK>

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
 #0: ffffffff8d327330 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
 #0: ffffffff8d327b30 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
 #0: ffffffff8d327160 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
3 locks held by kworker/u4:2/35:
 #0: ffff888145983138 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
 #1: ffffc90000ac7d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
 #2: ffff88814014a0e0 (&type->s_umount_key#40){.+.+}-{3:3}, at: trylock_super+0x1b/0xf0 fs/super.c:415
2 locks held by getty/3308:
 #0: ffff888013796098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
 #1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1650 drivers/tty/n_tty.c:2177
4 locks held by syz-executor.1/32433:
 #0: ffff88801d1e40e8 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x242/0x2e0 fs/file.c:1037
 #1: ffff88809833c460 (sb_writers#19){.+.+}-{0:0}, at: vfs_write+0x287/0xc50 fs/read_write.c:580
 #2: ffff8880831ef650 (&ovl_i_mutex_key[depth]#2){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #2: ffff8880831ef650 (&ovl_i_mutex_key[depth]#2){+.+.}-{3:3}, at: ovl_write_iter+0x12c/0xd70 fs/overlayfs/file.c:359
 #3: ffff888026048460 (sb_writers#4){.+.+}-{0:0}, at: ovl_write_iter+0x89b/0xd70 fs/overlayfs/file.c:380
5 locks held by syz-executor.1/32441:
 #0: ffff88809833c460 (sb_writers#19){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:393
 #1: ffff88803f7164c8 (&ovl_i_mutex_dir_key[depth]#2){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #1: ffff88803f7164c8 (&ovl_i_mutex_dir_key[depth]#2){++++}-{3:3}, at: open_last_lookups fs/namei.c:3478 [inline]
 #1: ffff88803f7164c8 (&ovl_i_mutex_dir_key[depth]#2){++++}-{3:3}, at: path_openat+0x7b9/0x2df0 fs/namei.c:3710
 #2: ffff888026048460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:393
 #3: ffff888082f4ac20 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:791 [inline]
 #3: ffff888082f4ac20 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: ovl_create_upper fs/overlayfs/dir.c:334 [inline]
 #3: ffff888082f4ac20 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: ovl_create_or_link+0x80a/0x1670 fs/overlayfs/dir.c:613
 #4: ffff888082f4a8e8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
 #4: ffff888082f4a8e8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_add_inline_entry+0xe1/0x990 fs/ext4/inline.c:1290
2 locks held by syz-executor.1/32442:
 #0: ffff88809833c460 (sb_writers#19){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:393
 #1: ffff88803f7164c8 (&ovl_i_mutex_dir_key[depth]#2){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
 #1: ffff88803f7164c8 (&ovl_i_mutex_dir_key[depth]#2){++++}-{3:3}, at: open_last_lookups fs/namei.c:3478 [inline]
 #1: ffff88803f7164c8 (&ovl_i_mutex_dir_key[depth]#2){++++}-{3:3}, at: path_openat+0x7b9/0x2df0 fs/namei.c:3710
1 lock held by syz-executor.2/32490:
 #0: ffff8881477b34c8 (&disk->open_mutex){+.+.}-{3:3}, at: sync_bdevs+0x1b0/0x320 block/bdev.c:1052
1 lock held by syz-executor.2/32491:
 #0: ffff8881477b34c8 (&disk->open_mutex){+.+.}-{3:3}, at: sync_bdevs+0x1b0/0x320 block/bdev.c:1052
1 lock held by syz-executor.2/32492:
 #0: ffff8881477b34c8 (&disk->open_mutex){+.+.}-{3:3}, at: sync_bdevs+0x1b0/0x320 block/bdev.c:1052
1 lock held by syz-executor.2/32493:
 #0: ffff8881477b34c8 (&disk->open_mutex){+.+.}-{3:3}, at: sync_bdevs+0x1b0/0x320 block/bdev.c:1052
1 lock held by syz-executor.2/32494:
 #0: ffff8881477b34c8 (&disk->open_mutex){+.+.}-{3:3}, at: sync_bdevs+0x1b0/0x320 block/bdev.c:1052
1 lock held by syz-executor.2/32495:
 #0: ffff8881477b34c8 (&disk->open_mutex){+.+.}-{3:3}, at: sync_bdevs+0x1b0/0x320 block/bdev.c:1052
2 locks held by syz-executor.2/32497:
 #0: ffff8880260480e0 (&type->s_umount_key#32){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722
 #1: ffff8880201d47d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:362 [inline]
 #1: ffff8880201d47d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x264/0xaa0 fs/fs-writeback.c:2704
1 lock held by syz-executor.1/32533:
 #0: ffff8881477b34c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0xfd/0xa40 block/bdev.c:813
2 locks held by syz-executor.2/32558:
 #0: ffff8880260480e0 (&type->s_umount_key#32){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722
 #1: ffff8880201d47d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:362 [inline]
 #1: ffff8880201d47d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x264/0xaa0 fs/fs-writeback.c:2704
2 locks held by syz-executor.2/32560:
 #0: ffff8880260480e0 (&type->s_umount_key#32){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722
 #1: ffff8880201d47d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:362 [inline]
 #1: ffff8880201d47d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x264/0xaa0 fs/fs-writeback.c:2704

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

NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.1.0-rc5-syzkaller-00015-g81e7cfa3a9eb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
 nmi_cpu_backtrace+0x46f/0x4f0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x1ba/0x420 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
 watchdog+0xcf5/0xd40 kernel/hung_task.c:377
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 29125 Comm: kworker/u4:25 Not tainted 6.1.0-rc5-syzkaller-00015-g81e7cfa3a9eb #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Workqueue: phy12 ieee80211_iface_work
RIP: 0010:filter_irq_stacks+0x3f/0xa0 kernel/stacktrace.c:395
Code: 31 ff 48 c7 c5 90 01 a0 8a 49 c7 c5 00 00 c0 8a 48 89 fb eb 12 66 0f 1f 44 00 00 49 ff c7 48 83 c3 08 4d 39 fc 74 4f 48 89 d8 <48> c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 48 89
RSP: 0018:ffffc9000b36ee60 EFLAGS: 00000206
RAX: ffffc9000b36ef08 RBX: ffffc9000b36ef08 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 000000000000000d RDI: ffffc9000b36ef00
RBP: ffffffff8aa00190 R08: 0000000000000000 R09: dffffc0000000000
R10: fffff5200166ddc0 R11: 1ffff9200166ddbe R12: 000000000000000d
R13: ffffffff8ac00000 R14: ffffc9000b36ef00 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c005842c00 CR3: 000000000d08e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __stack_depot_save+0x36/0x4a0 lib/stackdepot.c:439
 kasan_save_stack+0x3c/0x50 mm/kasan/common.c:46
 __kasan_record_aux_stack+0xb0/0xc0 mm/kasan/generic.c:481
 kvfree_call_rcu+0x112/0x880 kernel/rcu/tree.c:3343
 cfg80211_update_known_bss+0x16a/0x9e0
 cfg80211_bss_update+0x175/0x20b0 net/wireless/scan.c:1729
 cfg80211_inform_single_bss_frame_data net/wireless/scan.c:2498 [inline]
 cfg80211_inform_bss_frame_data+0x9b5/0x2140 net/wireless/scan.c:2531
 ieee80211_bss_info_update+0x7e9/0x1060 net/mac80211/scan.c:190
 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+0x1907/0x2c00 net/mac80211/ibss.c:1638
 ieee80211_iface_process_skb net/mac80211/iface.c:1630 [inline]
 ieee80211_iface_work+0x773/0xcf0 net/mac80211/iface.c:1684
 process_one_work+0x877/0xdb0 kernel/workqueue.c:2289
 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>