INFO: task kworker/u4:1:11 blocked for more than 143 seconds.
Not tainted 6.2.0-syzkaller-13563-gf915322fe014 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:1 state:D stack:20696 pid:11 ppid:2 flags:0x00004000
Workqueue: btrfs-flush_delalloc btrfs_work_helper
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x17d8/0x4990 kernel/sched/core.c:6622
schedule+0xc3/0x180 kernel/sched/core.c:6698
btrfs_start_ordered_extent+0x4af/0x750 fs/btrfs/ordered-data.c:749
btrfs_run_ordered_extent_work+0x19/0x30 fs/btrfs/ordered-data.c:619
btrfs_work_helper+0x41f/0xec0 fs/btrfs/async-thread.c:280
process_one_work+0x915/0x13a0 kernel/workqueue.c:2390
worker_thread+0xa63/0x1210 kernel/workqueue.c:2537
kthread+0x270/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task kworker/u4:5:1064 blocked for more than 143 seconds.
Not tainted 6.2.0-syzkaller-13563-gf915322fe014 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:5 state:D stack:20240 pid:1064 ppid:2 flags:0x00004000
Workqueue: btrfs-endio-write btrfs_work_helper
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x17d8/0x4990 kernel/sched/core.c:6622
schedule+0xc3/0x180 kernel/sched/core.c:6698
wait_on_state fs/btrfs/extent-io-tree.c:707 [inline]
wait_extent_bit+0x50c/0x670 fs/btrfs/extent-io-tree.c:751
lock_extent+0x1ce/0x280 fs/btrfs/extent-io-tree.c:1742
btrfs_finish_ordered_io+0x5d6/0x1cc0 fs/btrfs/inode.c:3201
btrfs_work_helper+0x41f/0xec0 fs/btrfs/async-thread.c:280
process_one_work+0x915/0x13a0 kernel/workqueue.c:2390
worker_thread+0xa63/0x1210 kernel/workqueue.c:2537
kthread+0x270/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task syz-executor.4:7087 blocked for more than 143 seconds.
Not tainted 6.2.0-syzkaller-13563-gf915322fe014 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:23632 pid:7087 ppid:5114 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x17d8/0x4990 kernel/sched/core.c:6622
schedule+0xc3/0x180 kernel/sched/core.c:6698
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6757
rwsem_down_write_slowpath+0xedd/0x13a0 kernel/locking/rwsem.c:1178
__down_write_common+0x1aa/0x200 kernel/locking/rwsem.c:1306
inode_lock include/linux/fs.h:758 [inline]
btrfs_inode_lock+0x4d/0xd0 fs/btrfs/inode.c:177
btrfs_sync_file+0x48d/0x11e0 fs/btrfs/file.c:1817
generic_write_sync include/linux/fs.h:2452 [inline]
btrfs_do_write_iter+0xccc/0x1270 fs/btrfs/file.c:1684
call_write_iter include/linux/fs.h:1851 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x7b2/0xbb0 fs/read_write.c:584
ksys_write+0x1a0/0x2c0 fs/read_write.c:637
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: 0033:0x7faec308c0f9
RSP: 002b:00007faec3daa168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007faec31abf80 RCX: 00007faec308c0f9
RDX: 0000000000000001 RSI: 0000000020000100 RDI: 0000000000000005
RBP: 00007faec30e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd163396df R14: 00007faec3daa300 R15: 0000000000022000
INFO: task syz-executor.4:7151 blocked for more than 144 seconds.
Not tainted 6.2.0-syzkaller-13563-gf915322fe014 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:22352 pid:7151 ppid:5114 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x17d8/0x4990 kernel/sched/core.c:6622
schedule+0xc3/0x180 kernel/sched/core.c:6698
wait_on_state fs/btrfs/extent-io-tree.c:707 [inline]
wait_extent_bit+0x50c/0x670 fs/btrfs/extent-io-tree.c:751
lock_extent+0x1ce/0x280 fs/btrfs/extent-io-tree.c:1742
btrfs_page_mkwrite+0x554/0xc90 fs/btrfs/inode.c:8158
do_page_mkwrite+0x1a1/0x600 mm/memory.c:2925
wp_page_shared mm/memory.c:3274 [inline]
do_wp_page+0x501/0x3620 mm/memory.c:3356
handle_pte_fault mm/memory.c:4927 [inline]
__handle_mm_fault mm/memory.c:5051 [inline]
handle_mm_fault+0x23a0/0x51c0 mm/memory.c:5197
do_user_addr_fault arch/x86/mm/fault.c:1407 [inline]
handle_page_fault arch/x86/mm/fault.c:1498 [inline]
exc_page_fault+0x685/0x8a0 arch/x86/mm/fault.c:1554
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0010:copy_user_short_string+0xd/0x40 arch/x86/lib/copy_user_64.S:233
Code: 74 0a 89 d1 f3 a4 89 c8 0f 01 ca c3 89 d0 0f 01 ca c3 01 ca eb e7 0f 1f 80 00 00 00 00 89 d1 83 e2 07 c1 e9 03 74 12 4c 8b 06 <4c> 89 07 48 8d 76 08 48 8d 7f 08 ff c9 75 ee 21 d2 74 10 89 d1 8a
RSP: 0018:ffffc9000501f330 EFLAGS: 00050202
RAX: ffffffff843e4201 RBX: 00007fffffffefc8 RCX: 0000000000000007
RDX: 0000000000000000 RSI: ffffc9000501f3e0 RDI: 0000000020000060
RBP: ffffc9000501f488 R08: 0000000000000000 R09: fffff52000a03e83
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000038
R13: ffffc9000501f3e0 R14: 0000000020000060 R15: ffffc9000501f3e0
copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
raw_copy_to_user arch/x86/include/asm/uaccess_64.h:58 [inline]
_copy_to_user+0xed/0x130 lib/usercopy.c:41
copy_to_user include/linux/uaccess.h:169 [inline]
fiemap_fill_next_extent+0x235/0x410 fs/ioctl.c:144
emit_fiemap_extent+0x242/0x3f0 fs/btrfs/extent_io.c:3002
fiemap_process_hole+0xa27/0xaf0 fs/btrfs/extent_io.c:3260
extent_fiemap+0xe5b/0x2150 fs/btrfs/extent_io.c:3467
btrfs_fiemap+0x178/0x1e0 fs/btrfs/inode.c:7830
ioctl_fiemap fs/ioctl.c:219 [inline]
do_vfs_ioctl+0x19ba/0x2b10 fs/ioctl.c:810
__do_sys_ioctl fs/ioctl.c:868 [inline]
__se_sys_ioctl+0x81/0x160 fs/ioctl.c:856
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: 0033:0x7faec308c0f9
RSP: 002b:00007faec3d68168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007faec31ac120 RCX: 00007faec308c0f9
RDX: 0000000020000040 RSI: 00000000c020660b RDI: 0000000000000004
RBP: 00007faec30e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd163396df R14: 00007faec3d68300 R15: 0000000000022000
INFO: task syz-executor.1:7165 blocked for more than 144 seconds.
Not tainted 6.2.0-syzkaller-13563-gf915322fe014 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:27416 pid:7165 ppid:5103 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0x17d8/0x4990 kernel/sched/core.c:6622
schedule+0xc3/0x180 kernel/sched/core.c:6698
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2143
do_wait_for_common+0x449/0x5f0 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x4a/0x60 kernel/sched/completion.c:138
btrfs_wait_ordered_extents+0xd69/0xe20 fs/btrfs/ordered-data.c:674
btrfs_wait_ordered_roots+0x65c/0x950 fs/btrfs/ordered-data.c:704
btrfs_sync_fs+0x199/0x7e0 fs/btrfs/super.c:1191
iterate_supers+0x12b/0x1e0 fs/super.c:736
ksys_sync+0xdb/0x1c0 fs/sync.c:104
__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: 0033:0x7f88fe48c0f9
RSP: 002b:00007f88f4bfe168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2
RAX: ffffffffffffffda RBX: 00007f88fe5ac1f0 RCX: 00007f88fe48c0f9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f88fe4e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcbfad7a7f R14: 00007f88f4bfe300 R15: 0000000000022000
Showing all locks held in the system:
2 locks held by kworker/u4:0/9:
2 locks held by kworker/u4:1/11:
#0: ffff88803415c138 ((wq_completion)btrfs-flush_delalloc){+.+.}-{0:0}, at: process_one_work+0x77f/0x13a0
#1: ffffc90000107d20 ((work_completion)(&work->normal_work)){+.+.}-{0:0}, at: process_one_work+0x7c6/0x13a0 kernel/workqueue.c:2365
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d1279f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d1281f0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:510
1 lock held by khungtaskd/28:
#0: ffffffff8d127820 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
3 locks held by kworker/u4:5/1064:
#0: ffff888079c76138 ((wq_completion)btrfs-endio-write){+.+.}-{0:0}, at: process_one_work+0x77f/0x13a0
#1: ffffc90004d2fd20 ((work_completion)(&work->normal_work)){+.+.}-{0:0}, at: process_one_work+0x7c6/0x13a0 kernel/workqueue.c:2365
#2: ffff88802729e4a8 (btrfs_ordered_extent){++++}-{0:0}, at: btrfs_finish_ordered_io+0x343/0x1cc0 fs/btrfs/inode.c:3157
2 locks held by getty/4748:
#0: ffff88802066e098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2177
3 locks held by syz-executor.4/7087:
#0: ffff888029c0f268 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x254/0x2f0 fs/file.c:1046
#1: ffff888033900460 (sb_writers#13){.+.+}-{0:0}, at: vfs_write+0x26d/0xbb0 fs/read_write.c:580
#2: ffff888033cd5058 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
#2: ffff888033cd5058 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: btrfs_inode_lock+0x4d/0xd0 fs/btrfs/inode.c:177
4 locks held by syz-executor.4/7151:
#0: ffff888033cd5058 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:768 [inline]
#0: ffff888033cd5058 (&sb->s_type->i_mutex_key#21){++++}-{3:3}, at: btrfs_inode_lock+0x60/0xd0 fs/btrfs/inode.c:169
#1: ffff888022d06d98 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline]
#1: ffff888022d06d98 (&mm->mmap_lock){++++}-{3:3}, at: do_user_addr_fault arch/x86/mm/fault.c:1348 [inline]
#1: ffff888022d06d98 (&mm->mmap_lock){++++}-{3:3}, at: handle_page_fault arch/x86/mm/fault.c:1498 [inline]
#1: ffff888022d06d98 (&mm->mmap_lock){++++}-{3:3}, at: exc_page_fault+0x18d/0x8a0 arch/x86/mm/fault.c:1554
#2: ffff888033900558 (sb_pagefaults#4){.+.+}-{0:0}, at: do_page_mkwrite+0x1a1/0x600 mm/memory.c:2925
#3: ffff888033cd4ee0 (&ei->i_mmap_lock){++++}-{3:3}, at: btrfs_page_mkwrite+0x425/0xc90 fs/btrfs/inode.c:8147
3 locks held by syz-executor.1/7165:
#0: ffff8880339000e0 (&type->s_umount_key#49){++++}-{3:3}, at: iterate_supers+0xb0/0x1e0 fs/super.c:734
#1: ffff88802729ca20 (&fs_info->ordered_operations_mutex){+.+.}-{3:3}, at: btrfs_wait_ordered_roots+0x104/0x950 fs/btrfs/ordered-data.c:692
#2: ffff888071b4e850 (&root->ordered_extent_mutex){+.+.}-{3:3}, at: btrfs_wait_ordered_extents+0x1f3/0xe20 fs/btrfs/ordered-data.c:638
2 locks held by syz-executor.2/7391:
#0: ffff8880339000e0 (&type->s_umount_key#49){++++}-{3:3}, at: iterate_supers+0xb0/0x1e0 fs/super.c:734
#1: ffff88802729ca20 (&fs_info->ordered_operations_mutex){+.+.}-{3:3}, at: btrfs_wait_ordered_roots+0x104/0x950 fs/btrfs/ordered-data.c:692
2 locks held by syz-executor.2/7559:
#0: ffff8880339000e0 (&type->s_umount_key#49){++++}-{3:3}, at: iterate_supers+0xb0/0x1e0 fs/super.c:734
#1: ffff88802729ca20 (&fs_info->ordered_operations_mutex){+.+.}-{3:3}, at: btrfs_wait_ordered_roots+0x104/0x950 fs/btrfs/ordered-data.c:692
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.2.0-syzkaller-13563-gf915322fe014 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
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:113
nmi_trigger_cpumask_backtrace+0x1b4/0x410 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0x1024/0x1070 kernel/hung_task.c:379
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: 6217 Comm: kworker/1:22 Not tainted 6.2.0-syzkaller-13563-gf915322fe014 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:stack_trace_consume_entry+0xf5/0x280 kernel/stacktrace.c:93
Code: 00 fc ff df 48 8b 1b 45 8d 70 01 41 0f b6 04 17 84 c0 0f 85 2d 01 00 00 45 89 31 4a 8d 1c c3 48 89 d8 48 c1 e8 03 80 3c 10 00 <74> 1a 4d 89 cf 48 89 df 49 89 d6 49 89 f5 e8 38 b4 68 00 4d 89 f9
RSP: 0018:ffffc90015fa7610 EFLAGS: 00000246
RAX: 1ffff92002bf4f02 RBX: ffffc90015fa7810 RCX: ffffffff8fb40000
RDX: dffffc0000000000 RSI: ffffffff889e9b3d RDI: ffffc90015fa774c
RBP: ffffc90015fa7748 R08: 0000000000000004 R09: ffffc90015fa7750
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92002bf4ee9
R13: 1ffff92002bf4ee9 R14: 0000000000000005 R15: 1ffff92002bf4eea
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005653485b41c0 CR3: 000000000cf30000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x105/0x140 arch/x86/kernel/stacktrace.c:27
stack_trace_save+0x117/0x1c0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:521
____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236
kasan_slab_free include/linux/kasan.h:162 [inline]
slab_free_hook mm/slub.c:1781 [inline]
slab_free_freelist_hook mm/slub.c:1807 [inline]
slab_free mm/slub.c:3787 [inline]
__kmem_cache_free+0x264/0x3c0 mm/slub.c:3800
skb_kfree_head net/core/skbuff.c:860 [inline]
skb_free_head net/core/skbuff.c:872 [inline]
skb_release_data+0x51d/0x810 net/core/skbuff.c:901
skb_release_all net/core/skbuff.c:966 [inline]
__kfree_skb net/core/skbuff.c:980 [inline]
consume_skb+0xb1/0x150 net/core/skbuff.c:1193
nsim_dev_trap_report drivers/net/netdevsim/dev.c:824 [inline]
nsim_dev_trap_report_work+0x761/0xa90 drivers/net/netdevsim/dev.c:853
process_one_work+0x915/0x13a0 kernel/workqueue.c:2390
worker_thread+0xa63/0x1210 kernel/workqueue.c:2537
kthread+0x270/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308