INFO: task kworker/u4:16:8297 blocked for more than 143 seconds.
Not tainted 6.3.0-syzkaller-13027-g1a5304fecee5 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:16 state:D stack:20064 pid:8297 ppid:2 flags:0x00004000
Workqueue: btrfs-flush_delalloc btrfs_work_helper
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
io_schedule+0x8c/0x100 kernel/sched/core.c:8979
folio_wait_bit_common+0x86c/0x12b0 mm/filemap.c:1301
folio_lock include/linux/pagemap.h:955 [inline]
extent_write_cache_pages fs/btrfs/extent_io.c:2457 [inline]
extent_writepages+0xae4/0x1990 fs/btrfs/extent_io.c:2599
do_writepages+0x3a6/0x670 mm/page-writeback.c:2551
filemap_fdatawrite_wbc+0x125/0x180 mm/filemap.c:390
__filemap_fdatawrite_range mm/filemap.c:423 [inline]
__filemap_fdatawrite mm/filemap.c:429 [inline]
filemap_flush+0x11e/0x170 mm/filemap.c:456
btrfs_run_delalloc_work+0x63/0xf0 fs/btrfs/inode.c:9172
btrfs_work_helper+0x380/0xbe0 fs/btrfs/async-thread.c:280
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405
worker_thread+0xa63/0x1210 kernel/workqueue.c:2552
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task syz-executor.1:25276 blocked for more than 143 seconds.
Not tainted 6.3.0-syzkaller-13027-g1a5304fecee5 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:22088 pid:25276 ppid:5023 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6804
rwsem_down_read_slowpath+0x5f4/0x950 kernel/locking/rwsem.c:1086
__down_read_common+0x61/0x2c0 kernel/locking/rwsem.c:1250
inode_lock_shared include/linux/fs.h:785 [inline]
btrfs_inode_lock+0x60/0xd0 fs/btrfs/inode.c:170
btrfs_direct_write fs/btrfs/file.c:1477 [inline]
btrfs_do_write_iter+0x664/0x1270 fs/btrfs/file.c:1674
do_iter_write+0x7b1/0xcb0 fs/read_write.c:860
iter_file_splice_write+0x843/0xfe0 fs/splice.c:779
do_splice_from fs/splice.c:857 [inline]
direct_splice_actor+0xe7/0x1c0 fs/splice.c:1023
splice_direct_to_actor+0x4c4/0xbd0 fs/splice.c:978
do_splice_direct+0x283/0x3d0 fs/splice.c:1066
do_sendfile+0x620/0xff0 fs/read_write.c:1254
__do_sys_sendfile64 fs/read_write.c:1322 [inline]
__se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1308
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: 0033:0x7f1d6ea8c169
RSP: 002b:00007f1d6f867168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f1d6ebabf80 RCX: 00007f1d6ea8c169
RDX: 0000000000000000 RSI: 000000000000000e RDI: 000000000000000d
RBP: 00007f1d6eae7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0001000000201004 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdde7c64bf R14: 00007f1d6f867300 R15: 0000000000022000
INFO: task syz-executor.1:25302 blocked for more than 144 seconds.
Not tainted 6.3.0-syzkaller-13027-g1a5304fecee5 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:21960 pid:25302 ppid:5023 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6804
rwsem_down_read_slowpath+0x5f4/0x950 kernel/locking/rwsem.c:1086
__down_read_common+0x61/0x2c0 kernel/locking/rwsem.c:1250
inode_lock_shared include/linux/fs.h:785 [inline]
btrfs_inode_lock+0x60/0xd0 fs/btrfs/inode.c:170
btrfs_direct_write fs/btrfs/file.c:1477 [inline]
btrfs_do_write_iter+0x664/0x1270 fs/btrfs/file.c:1674
do_iter_write+0x7b1/0xcb0 fs/read_write.c:860
iter_file_splice_write+0x843/0xfe0 fs/splice.c:779
do_splice_from fs/splice.c:857 [inline]
direct_splice_actor+0xe7/0x1c0 fs/splice.c:1023
splice_direct_to_actor+0x4c4/0xbd0 fs/splice.c:978
do_splice_direct+0x283/0x3d0 fs/splice.c:1066
do_sendfile+0x620/0xff0 fs/read_write.c:1254
__do_sys_sendfile64 fs/read_write.c:1322 [inline]
__se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1308
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: 0033:0x7f1d6ea8c169
RSP: 002b:00007f1d6f846168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f1d6ebac050 RCX: 00007f1d6ea8c169
RDX: 0000000000000000 RSI: 000000000000000f RDI: 0000000000000008
RBP: 00007f1d6eae7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0001000000201004 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdde7c64bf R14: 00007f1d6f846300 R15: 0000000000022000
INFO: task syz-executor.1:25305 blocked for more than 144 seconds.
Not tainted 6.3.0-syzkaller-13027-g1a5304fecee5 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:25224 pid:25305 ppid:5023 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
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
start_delalloc_inodes+0xa75/0xcb0 fs/btrfs/inode.c:9264
btrfs_start_delalloc_snapshot+0x15d/0x1c0 fs/btrfs/inode.c:9290
try_flush_qgroup+0x174/0x310 fs/btrfs/qgroup.c:3741
btrfs_qgroup_reserve_data+0x7c/0xc0 fs/btrfs/qgroup.c:3833
btrfs_check_data_free_space+0x149/0x240 fs/btrfs/delalloc-space.c:154
btrfs_delalloc_reserve_space+0x37/0x200 fs/btrfs/delalloc-space.c:467
defrag_one_locked_target fs/btrfs/defrag.c:1037 [inline]
defrag_one_range fs/btrfs/defrag.c:1109 [inline]
defrag_one_cluster fs/btrfs/defrag.c:1187 [inline]
btrfs_defrag_file+0x18c8/0x2c90 fs/btrfs/defrag.c:1312
btrfs_ioctl_defrag+0x36d/0x410 fs/btrfs/ioctl.c:2604
btrfs_ioctl+0xc37/0xd40
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:870 [inline]
__se_sys_ioctl+0xf1/0x160 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: 0033:0x7f1d6ea8c169
RSP: 002b:00007f1d6f804168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f1d6ebac1f0 RCX: 00007f1d6ea8c169
RDX: 0000000000000000 RSI: 0000000050009402 RDI: 0000000000000008
RBP: 00007f1d6eae7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdde7c64bf R14: 00007f1d6f804300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8cf277f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8cf27bb0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518
1 lock held by khungtaskd/28:
#0: ffffffff8cf27620 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by udevd/4445:
2 locks held by getty/4741:
#0: ffff88814ac0b098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900015802f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2176
1 lock held by syz-executor.5/5018:
#0: ffffffff8cf2ccf8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
#0: ffffffff8cf2ccf8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a3/0x890 kernel/rcu/tree_exp.h:992
3 locks held by syz-executor.3/5022:
#0: ffff8880b983c1d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
#1: ffffffff8d015280 (mmu_notifier_invalidate_range_start){+.+.}-{0:0}, at: spin_lock include/linux/spinlock.h:350 [inline]
#1: ffffffff8d015280 (mmu_notifier_invalidate_range_start){+.+.}-{0:0}, at: fast_dput fs/dcache.c:789 [inline]
#1: ffffffff8d015280 (mmu_notifier_invalidate_range_start){+.+.}-{0:0}, at: dput+0x230/0x420 fs/dcache.c:900
#2: ffffe8ffffc92448 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3a7/0x770 kernel/sched/psi.c:984
2 locks held by kworker/1:6/5081:
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc9000568fd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
3 locks held by kworker/u4:15/6970:
#0: ffff888145265138 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc900031dfd20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
#2: ffff8881482480e0 (&type->s_umount_key#76){++++}-{3:3}, at: trylock_super+0x1f/0xf0 fs/super.c:414
2 locks held by kworker/u4:16/8297:
#0: ffff88803fd47938 ((wq_completion)btrfs-flush_delalloc){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc90015f7fd20 ((work_completion)(&work->normal_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
2 locks held by kworker/u4:4/18097:
2 locks held by syz-executor.1/25276:
#0: ffff888148248460 (sb_writers#16){.+.+}-{0:0}, at: do_sendfile+0x5fb/0xff0 fs/read_write.c:1253
#1: ffff888080fa8ef0 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:785 [inline]
#1: ffff888080fa8ef0 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: btrfs_inode_lock+0x60/0xd0 fs/btrfs/inode.c:170
2 locks held by syz-executor.1/25302:
#0: ffff888148248460 (sb_writers#16){.+.+}-{0:0}, at: do_sendfile+0x5fb/0xff0 fs/read_write.c:1253
#1: ffff888080fa8ef0 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:785 [inline]
#1: ffff888080fa8ef0 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: btrfs_inode_lock+0x60/0xd0 fs/btrfs/inode.c:170
3 locks held by syz-executor.1/25305:
#0: ffff888148248460 (sb_writers#16){.+.+}-{0:0}, at: mnt_want_write_file+0x5e/0x1f0 fs/namespace.c:438
#1: ffff888080fa8ef0 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline]
#1: ffff888080fa8ef0 (&sb->s_type->i_mutex_key#23){++++}-{3:3}, at: btrfs_inode_lock+0x4d/0xd0 fs/btrfs/inode.c:178
#2: ffff88803e4a2758 (&root->delalloc_mutex){+.+.}-{3:3}, at: start_delalloc_inodes+0x1ac/0xcb0 fs/btrfs/inode.c:9216
3 locks held by syz-executor.1/26478:
3 locks held by syz-executor.2/26483:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.3.0-syzkaller-13027-g1a5304fecee5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x187/0x300 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+0xec2/0xf00 kernel/hung_task.c:379
kthread+0x2b8/0x350 kernel/kthread.c:379
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: 5081 Comm: kworker/1:6 Not tainted 6.3.0-syzkaller-13027-g1a5304fecee5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:on_stack arch/x86/include/asm/stacktrace.h:58 [inline]
RIP: 0010:stack_access_ok arch/x86/kernel/unwind_orc.c:365 [inline]
RIP: 0010:deref_stack_reg arch/x86/kernel/unwind_orc.c:375 [inline]
RIP: 0010:unwind_next_frame+0xa73/0x2200 arch/x86/kernel/unwind_orc.c:557
Code: 00 00 00 fc ff df 41 80 3c 07 00 74 0e 48 89 df 48 89 d5 e8 df 84 a6 00 48 89 ea 48 89 5c 24 58 4c 8b 64 24 08 49 8b 5c 24 10 <48> b8 00 00 00 00 00 fc ff df 48 8b 4c 24 20 0f b6 04 01 84 c0 0f
RSP: 0018:ffffc9000568f510 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffffc90005690000 RCX: ffffffff8f45e856
RDX: ffffc90005688000 RSI: 0000000000000002 RDI: ffffffff8f45e856
RBP: 1ffffffff1e8bd0b R08: 0000000000000001 R09: ffffc9000568f6d0
R10: ffffc9000568f630 R11: dffffc0000000001 R12: ffffc9000568f5e0
R13: 1ffff92000ad1ebd R14: ffffc9000568f5e8 R15: 1ffff92000ad1ebe
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdf652d56be CR3: 0000000082dc6000 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/0x70 mm/kasan/common.c:52
__kasan_slab_alloc+0x66/0x70 mm/kasan/common.c:328
kasan_slab_alloc include/linux/kasan.h:186 [inline]
slab_post_alloc_hook+0x68/0x3a0 mm/slab.h:711
slab_alloc_node mm/slub.c:3451 [inline]
kmem_cache_alloc_node+0x157/0x350 mm/slub.c:3496
__alloc_skb+0x181/0x420 net/core/skbuff.c:644
alloc_skb include/linux/skbuff.h:1288 [inline]
nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:751 [inline]
nsim_dev_trap_report drivers/net/netdevsim/dev.c:808 [inline]
nsim_dev_trap_report_work+0x250/0xa90 drivers/net/netdevsim/dev.c:853
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405
worker_thread+0xa63/0x1210 kernel/workqueue.c:2552
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308