INFO: task syz-executor.0:754 blocked for more than 143 seconds.
Not tainted 6.2.0-rc8-syzkaller-00151-g925cf0457d7e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:23328 pid:754 ppid:5085 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5296 [inline]
__schedule+0x1409/0x43f0 kernel/sched/core.c:6609
schedule+0xc3/0x190 kernel/sched/core.c:6685
io_schedule+0x8c/0x100 kernel/sched/core.c:8871
bit_wait_io+0x12/0xc0 kernel/sched/wait_bit.c:209
__wait_on_bit_lock+0xbd/0x1a0 kernel/sched/wait_bit.c:90
out_of_line_wait_on_bit_lock+0x1d4/0x250 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+0x57d/0x16a0 fs/buffer.c:1770
__writepage+0x64/0x130 mm/page-writeback.c:2537
write_cache_pages+0x99a/0x16a0 mm/page-writeback.c:2472
generic_writepages mm/page-writeback.c:2563 [inline]
do_writepages+0x413/0x670 mm/page-writeback.c:2583
filemap_fdatawrite_wbc+0x125/0x180 mm/filemap.c:388
__filemap_fdatawrite_range mm/filemap.c:421 [inline]
__filemap_fdatawrite mm/filemap.c:427 [inline]
filemap_fdatawrite+0x143/0x1b0 mm/filemap.c:432
sync_bdevs+0x23b/0x320 block/bdev.c:1064
ksys_sync+0xe2/0x1c0 fs/sync.c:105
__do_sys_sync+0xe/0x20 fs/sync.c:113
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: 0033:0x7f4f4028c0f9
RSP: 002b:00007f4f40f5a168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f4f403ac120 RCX: 00007f4f4028c0f9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f4f402e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff6e8000bf R14: 00007f4f40f5a300 R15: 0000000000022000
INFO: task syz-executor.4:696 blocked for more than 143 seconds.
Not tainted 6.2.0-rc8-syzkaller-00151-g925cf0457d7e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:24608 pid:696 ppid:5102 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5296 [inline]
__schedule+0x1409/0x43f0 kernel/sched/core.c:6609
schedule+0xc3/0x190 kernel/sched/core.c:6685
io_schedule+0x8c/0x100 kernel/sched/core.c:8871
bit_wait_io+0x12/0xc0 kernel/sched/wait_bit.c:209
__wait_on_bit_lock+0xbd/0x1a0 kernel/sched/wait_bit.c:90
out_of_line_wait_on_bit_lock+0x1d4/0x250 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+0x120/0x380 fs/buffer.c:2732
__ext4_handle_dirty_metadata+0x2a6/0x820 fs/ext4/ext4_jbd2.c:387
ext4_handle_dirty_dirblock+0x362/0x6f0 fs/ext4/namei.c:438
ext4_finish_convert_inline_dir+0x57b/0x6f0 fs/ext4/inline.c:1181
ext4_convert_inline_data_nolock+0xa01/0xd80 fs/ext4/inline.c:1258
ext4_try_add_inline_entry+0x809/0xb70 fs/ext4/inline.c:1331
ext4_add_entry+0x535/0x1010 fs/ext4/namei.c:2385
ext4_mkdir+0x553/0xce0 fs/ext4/namei.c:3007
vfs_mkdir+0x3ba/0x590 fs/namei.c:4036
do_mkdirat+0x246/0x500 fs/namei.c:4061
__do_sys_mkdirat fs/namei.c:4076 [inline]
__se_sys_mkdirat fs/namei.c:4074 [inline]
__x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4074
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: 0033:0x7f1ad208c0f9
RSP: 002b:00007f1ad2e13168 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f1ad21abf80 RCX: 00007f1ad208c0f9
RDX: 0000000000000000 RSI: 0000000020000540 RDI: 0000000000000006
RBP: 00007f1ad20e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd10fbb1df R14: 00007f1ad2e13300 R15: 0000000000022000
INFO: task syz-executor.4:709 blocked for more than 144 seconds.
Not tainted 6.2.0-rc8-syzkaller-00151-g925cf0457d7e #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:28248 pid:709 ppid:5102 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5296 [inline]
__schedule+0x1409/0x43f0 kernel/sched/core.c:6609
schedule+0xc3/0x190 kernel/sched/core.c:6685
rwsem_down_read_slowpath+0x5f4/0x950 kernel/locking/rwsem.c:1095
__down_read_common+0x54/0x290 kernel/locking/rwsem.c:1260
inode_lock_shared include/linux/fs.h:766 [inline]
open_last_lookups fs/namei.c:3480 [inline]
path_openat+0x7a6/0x2e40 fs/namei.c:3711
do_filp_open+0x234/0x490 fs/namei.c:3741
do_sys_openat2+0x13f/0x500 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+0x225/0x270 fs/open.c:1330
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: 0033:0x7f1ad208c0f9
RSP: 002b:00007f1ad2df2168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f1ad21ac050 RCX: 00007f1ad208c0f9
RDX: 0000000000000044 RSI: 000000000010b400 RDI: 00000000200006c0
RBP: 00007f1ad20e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd10fbb1df R14: 00007f1ad2df2300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8cf25950 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xce0 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8cf26150 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xce0 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
#0: ffffffff8cf25780 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4737:
#0: ffff88802c8ab098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2177
3 locks held by kworker/u4:10/7397:
#0: ffff8880179b4938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x77f/0x1370
#1: ffffc9000c107d20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x7c6/0x1370 kernel/workqueue.c:2264
#2: ffff8881401480e0 (&type->s_umount_key#41){.+.+}-{3:3}, at: trylock_super+0x1f/0xf0 fs/super.c:415
1 lock held by syz-executor.0/754:
#0: ffff88801eaa94c8 (&disk->open_mutex){+.+.}-{3:3}, at: sync_bdevs+0x1a9/0x320 block/bdev.c:1052
3 locks held by syz-executor.4/696:
#0: ffff888032d78460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:508
#1: ffff88803fba7258 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: inode_lock_nested include/linux/fs.h:791 [inline]
#1: ffff88803fba7258 (&type->i_mutex_dir_key#3/1){+.+.}-{3:3}, at: filename_create+0x25a/0x530 fs/namei.c:3807
#2: ffff88803fba6f20 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
#2: ffff88803fba6f20 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_add_inline_entry+0xf6/0xb70 fs/ext4/inline.c:1289
1 lock held by syz-executor.4/709:
#0: ffff88803fba7258 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:766 [inline]
#0: ffff88803fba7258 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: open_last_lookups fs/namei.c:3480 [inline]
#0: ffff88803fba7258 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: path_openat+0x7a6/0x2e40 fs/namei.c:3711
2 locks held by syz-executor.1/832:
#0: ffff888032d780e0 (&type->s_umount_key#31){++++}-{3:3}, at: iterate_supers+0xb0/0x1e0 fs/super.c:722
#1: ffff88801eab27d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:364 [inline]
#1: ffff88801eab27d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x294/0xa70 fs/fs-writeback.c:2723
1 lock held by syz-executor.4/882:
#0: ffff88801eaa94c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev+0x148/0xa30 block/bdev.c:813
2 locks held by syz-executor.0/916:
#0: ffff888032d780e0 (&type->s_umount_key#31){++++}-{3:3}, at: iterate_supers+0xb0/0x1e0 fs/super.c:722
#1: ffff88801eab27d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:364 [inline]
#1: ffff88801eab27d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x294/0xa70 fs/fs-writeback.c:2723
2 locks held by syz-executor.0/963:
#0: ffff888032d780e0 (&type->s_umount_key#31){++++}-{3:3}, at: iterate_supers+0xb0/0x1e0 fs/super.c:722
#1: ffff88801eab27d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:364 [inline]
#1: ffff88801eab27d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x294/0xa70 fs/fs-writeback.c:2723
2 locks held by syz-executor.0/971:
#0: ffff888032d780e0 (&type->s_umount_key#31){++++}-{3:3}, at: iterate_supers+0xb0/0x1e0 fs/super.c:722
#1: ffff88801eab27d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:364 [inline]
#1: ffff88801eab27d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x294/0xa70 fs/fs-writeback.c:2723
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc8-syzkaller-00151-g925cf0457d7e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x4e5/0x560 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1b4/0x3f0 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+0xf70/0xfb0 kernel/hung_task.c:377
kthread+0x270/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 5408 Comm: kworker/u4:7 Not tainted 6.2.0-rc8-syzkaller-00151-g925cf0457d7e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Workqueue: phy11 ieee80211_iface_work
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:177 [inline]
RIP: 0010:unwind_next_frame+0x1bd/0x22b0 arch/x86/kernel/unwind_orc.c:467
Code: c1 ed 08 48 c7 c0 dc ce 64 8f 48 c7 c1 e0 4e 8c 8f 48 29 c1 48 c1 e9 02 45 31 ff 80 3d 8b 17 64 0b 00 44 0f 45 f9 41 8d 47 ff <39> e8 0f 86 3b 1a 00 00 89 e8 48 8d 1c 85 dc ce 64 8f 48 89 d8 48
RSP: 0018:ffffc900052ff140 EFLAGS: 00000202
RAX: 000000000009e000 RBX: ffffc900052ff268 RCX: 000000000009e001
RDX: dffffc0000000000 RSI: ffffffff815c9370 RDI: ffffffff813d46c7
RBP: 0000000000005c93 R08: 0000000000000008 R09: ffffc900052ff310
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffffffff815c936f R14: ffffffff815c9370 R15: 000000000009e001
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0006f3000 CR3: 000000000cc8e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x111/0x140 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/0x80 mm/kasan/common.c:52
____kasan_kmalloc mm/kasan/common.c:374 [inline]
__kasan_kmalloc+0x9b/0xb0 mm/kasan/common.c:383
kasan_kmalloc include/linux/kasan.h:211 [inline]
__do_kmalloc_node mm/slab_common.c:968 [inline]
__kmalloc+0xb3/0x1a0 mm/slab_common.c:981
kmalloc include/linux/slab.h:584 [inline]
kzalloc include/linux/slab.h:720 [inline]
ieee802_11_parse_elems_full+0x112/0x2a40 net/mac80211/util.c:1619
ieee802_11_parse_elems_crc net/mac80211/ieee80211_i.h:2260 [inline]
ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2267 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1605 [inline]
ieee80211_ibss_rx_queued_mgmt+0x51a/0x2e00 net/mac80211/ibss.c:1638
ieee80211_iface_process_skb net/mac80211/iface.c:1583 [inline]
ieee80211_iface_work+0x7bd/0xd00 net/mac80211/iface.c:1637
process_one_work+0x8fa/0x1370 kernel/workqueue.c:2289
worker_thread+0xa63/0x1210 kernel/workqueue.c:2436
kthread+0x270/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308