INFO: task kworker/u4:15:14720 blocked for more than 143 seconds.
Not tainted 6.2.0-rc5-syzkaller-00027-gfb6e71db53f3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:15 state:D stack:17464 pid:14720 ppid:2 flags:0x00004000
Workqueue: writeback wb_workfn (flush-7:0)
Call Trace:
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6606
schedule+0xcb/0x190 kernel/sched/core.c:6682
io_schedule+0x83/0x100 kernel/sched/core.c:8868
folio_wait_bit_common+0x83a/0x12a0 mm/filemap.c:1297
write_cache_pages+0x47a/0x1340 mm/page-writeback.c:2439
generic_writepages mm/page-writeback.c:2563 [inline]
do_writepages+0x424/0x680 mm/page-writeback.c:2583
__writeback_single_inode+0xd1/0x670 fs/fs-writeback.c:1598
writeback_sb_inodes+0x812/0x1050 fs/fs-writeback.c:1889
__writeback_inodes_wb+0x11d/0x260 fs/fs-writeback.c:1960
wb_writeback+0x440/0x7b0 fs/fs-writeback.c:2065
wb_check_start_all fs/fs-writeback.c:2187 [inline]
wb_do_writeback fs/fs-writeback.c:2213 [inline]
wb_workfn+0x827/0xef0 fs/fs-writeback.c:2246
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:308
INFO: task syz-executor.0:25592 blocked for more than 143 seconds.
Not tainted 6.2.0-rc5-syzkaller-00027-gfb6e71db53f3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:18760 pid:25592 ppid:5098 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6606
schedule+0xcb/0x190 kernel/sched/core.c:6682
io_schedule+0x83/0x100 kernel/sched/core.c:8868
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:387
ext4_handle_dirty_dirblock+0x363/0x6b0 fs/ext4/namei.c:438
ext4_finish_convert_inline_dir+0x58a/0x700 fs/ext4/inline.c:1181
ext4_convert_inline_data_nolock+0x639/0x820 fs/ext4/inline.c:1258
ext4_try_add_inline_entry+0x683/0x990 fs/ext4/inline.c:1331
ext4_add_entry+0x5a4/0xeb0 fs/ext4/namei.c:2385
ext4_mkdir+0x557/0xcf0 fs/ext4/namei.c:3007
vfs_mkdir+0x3b3/0x590 fs/namei.c:4036
do_mkdirat+0x25b/0x530 fs/namei.c:4061
__do_sys_mkdirat fs/namei.c:4076 [inline]
__se_sys_mkdirat fs/namei.c:4074 [inline]
__x64_sys_mkdirat+0x85/0x90 fs/namei.c:4074
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: 0033:0x7ffa6ba8c0c9
RSP: 002b:00007ffa6c7ac168 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007ffa6bbabf80 RCX: 00007ffa6ba8c0c9
RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000006
RBP: 00007ffa6bae7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffde90075ef R14: 00007ffa6c7ac300 R15: 0000000000022000
INFO: task syz-executor.0:25608 blocked for more than 144 seconds.
Not tainted 6.2.0-rc5-syzkaller-00027-gfb6e71db53f3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:24840 pid:25608 ppid:5098 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6606
schedule+0xcb/0x190 kernel/sched/core.c:6682
rwsem_down_read_slowpath+0x5f9/0x930 kernel/locking/rwsem.c:1095
__down_read_common+0x54/0x2a0 kernel/locking/rwsem.c:1260
inode_lock_shared include/linux/fs.h:766 [inline]
open_last_lookups fs/namei.c:3480 [inline]
path_openat+0x7aa/0x2dd0 fs/namei.c:3711
do_filp_open+0x264/0x4f0 fs/namei.c:3741
do_sys_openat2+0x124/0x4e0 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_open fs/open.c:1334 [inline]
__se_sys_open fs/open.c:1330 [inline]
__x64_sys_open+0x221/0x270 fs/open.c:1330
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: 0033:0x7ffa6ba8c0c9
RSP: 002b:00007ffa6c78b168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007ffa6bbac050 RCX: 00007ffa6ba8c0c9
RDX: 0000000000000080 RSI: 0000000000040000 RDI: 0000000020000180
RBP: 00007ffa6bae7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffde90075ef R14: 00007ffa6c78b300 R15: 0000000000022000
INFO: task syz-executor.5:25627 blocked for more than 144 seconds.
Not tainted 6.2.0-rc5-syzkaller-00027-gfb6e71db53f3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:20152 pid:25627 ppid:5111 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6606
schedule+0xcb/0x190 kernel/sched/core.c:6682
io_schedule+0x83/0x100 kernel/sched/core.c:8868
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]
__block_write_full_page+0x61e/0x1710 fs/buffer.c:1770
__writepage+0x60/0x120 mm/page-writeback.c:2537
write_cache_pages+0x7cd/0x1340 mm/page-writeback.c:2472
generic_writepages mm/page-writeback.c:2563 [inline]
do_writepages+0x424/0x680 mm/page-writeback.c:2583
filemap_fdatawrite_wbc+0x11e/0x170 mm/filemap.c:388
__filemap_fdatawrite_range mm/filemap.c:421 [inline]
__filemap_fdatawrite mm/filemap.c:427 [inline]
filemap_fdatawrite+0x146/0x1d0 mm/filemap.c:432
sync_bdevs+0x242/0x320 block/bdev.c:1064
ksys_sync+0xdc/0x1c0 fs/sync.c:105
__do_sys_sync+0xa/0x10 fs/sync.c:113
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: 0033:0x7f351468c0c9
RSP: 002b:00007f3515479168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f35147abf80 RCX: 00007f351468c0c9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f35146e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe4252e9ef R14: 00007f3515479300 R15: 0000000000022000
INFO: task syz-executor.5:25678 blocked for more than 144 seconds.
Not tainted 6.2.0-rc5-syzkaller-00027-gfb6e71db53f3 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:19976 pid:25678 ppid:5111 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6606
schedule+0xcb/0x190 kernel/sched/core.c:6682
wb_wait_for_completion+0x155/0x280 fs/fs-writeback.c:192
sync_inodes_sb+0x283/0xaa0 fs/fs-writeback.c:2725
iterate_supers+0x137/0x1f0 fs/super.c:724
ksys_sync+0xb7/0x1c0 fs/sync.c:102
__do_sys_sync+0xa/0x10 fs/sync.c:113
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: 0033:0x7f351468c0c9
RSP: 002b:00007f3515458168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f35147ac050 RCX: 00007f351468c0c9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f35146e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe4252e9ef R14: 00007f3515458300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d327010 (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: ffffffff8d327810 (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: ffffffff8d326e40 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4751:
#0: ffff88802c153098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1650 drivers/tty/n_tty.c:2177
3 locks held by kworker/u4:15/14720:
#0: ffff8881451c4938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
#1: ffffc90017437d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
#2: ffff88813fe620e0 (&type->s_umount_key#40){.+.+}-{3:3}, at: trylock_super+0x1b/0xf0 fs/super.c:415
3 locks held by syz-executor.0/25592:
#0: ffff888021460460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:508
#1: ffff888073634030 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:791 [inline]
#1: ffff888073634030 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: filename_create+0x22a/0x4f0 fs/namei.c:3807
#2: ffff888073633cf8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
#2: ffff888073633cf8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_add_inline_entry+0xe1/0x990 fs/ext4/inline.c:1289
1 lock held by syz-executor.0/25608:
#0: ffff888073634030 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#0: ffff888073634030 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: open_last_lookups fs/namei.c:3480 [inline]
#0: ffff888073634030 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: path_openat+0x7aa/0x2dd0 fs/namei.c:3711
1 lock held by syz-executor.5/25627:
#0: ffff888146c9f4c8 (&disk->open_mutex){+.+.}-{3:3}, at: sync_bdevs+0x1b0/0x320 block/bdev.c:1052
2 locks held by syz-executor.5/25678:
#0: ffff8880214600e0 (&type->s_umount_key#32){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722
#1: ffff88801f8907d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:364 [inline]
#1: ffff88801f8907d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x264/0xaa0 fs/fs-writeback.c:2723
1 lock held by syz-executor.0/25793:
#0: ffff888146c9f4c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0xfe/0xa60 block/bdev.c:813
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc5-syzkaller-00027-gfb6e71db53f3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x290 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+0xcd5/0xd20 kernel/hung_task.c:377
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 7493 Comm: kworker/u4:11 Not tainted 6.2.0-rc5-syzkaller-00027-gfb6e71db53f3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Workqueue: phy10 ieee80211_iface_work
RIP: 0010:__kasan_record_aux_stack+0x9f/0xc0 mm/kasan/generic.c:487
Code: 48 01 fe 48 39 f3 77 03 48 89 de 4c 89 ff e8 f8 1c ff ff 48 89 c3 49 63 87 bc 00 00 00 48 85 c0 74 1c 48 01 c3 74 17 8b 43 08 <89> 43 0c 41 0f b6 f6 bf 00 08 00 00 e8 a0 d8 ff ff 89 43 08 5b 41
RSP: 0018:ffffc9000b0ff138 EFLAGS: 00000282
RAX: 0000000004b30243 RBX: ffff8880204b2ce0 RCX: ffffea0000812c80
RDX: 0000000000000000 RSI: ffff8880204b2c80 RDI: ffff888012841780
RBP: 0000000000000080 R08: ffffffff813e27e7 R09: fffffbfff20fca48
R10: fffffbfff20fca48 R11: 1ffffffff20fca47 R12: ffff8880204b2c80
R13: ffff8880204b2c88 R14: 0000000000000000 R15: ffff888012841780
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c000825000 CR3: 000000000d08e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
kvfree_call_rcu+0x112/0x880 kernel/rcu/tree.c:3376
cfg80211_update_known_bss+0x16a/0x9e0
cfg80211_bss_update+0x175/0x20b0 net/wireless/scan.c:1728
cfg80211_inform_single_bss_frame_data net/wireless/scan.c:2492 [inline]
cfg80211_inform_bss_frame_data+0x97b/0x2230 net/wireless/scan.c:2525
ieee80211_bss_info_update+0x74f/0x1020 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+0x1945/0x2c40 net/mac80211/ibss.c:1638
ieee80211_iface_process_skb net/mac80211/iface.c:1583 [inline]
ieee80211_iface_work+0x773/0xcf0 net/mac80211/iface.c:1637
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:308