INFO: task kworker/u4:3:46 blocked for more than 143 seconds.
Not tainted 6.4.0-rc1-syzkaller-00133-g9a48d6046722 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:3 state:D stack:19808 pid:46 ppid:2 flags:0x00004000
Workqueue: events_unbound io_ring_exit_work
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
io_ring_exit_work+0x6fd/0x850 io_uring/io_uring.c:3077
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 kworker/u4:4:56 blocked for more than 144 seconds.
Not tainted 6.4.0-rc1-syzkaller-00133-g9a48d6046722 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:4 state:D stack:22104 pid:56 ppid:2 flags:0x00004000
Workqueue: events_unbound io_ring_exit_work
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
io_ring_exit_work+0x6fd/0x850 io_uring/io_uring.c:3077
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.2:8330 blocked for more than 145 seconds.
Not tainted 6.4.0-rc1-syzkaller-00133-g9a48d6046722 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:24584 pid:8330 ppid:5028 flags:0x00024006
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
ext4_readpage_inline+0x36/0x5f0 fs/ext4/inline.c:509
ext4_read_folio+0x15f/0x310 fs/ext4/inode.c:3109
filemap_read_folio+0x19d/0x7a0 mm/filemap.c:2421
filemap_create_folio mm/filemap.c:2549 [inline]
filemap_get_pages+0xdf7/0x20c0 mm/filemap.c:2602
filemap_read+0x45a/0x1170 mm/filemap.c:2690
call_read_iter include/linux/fs.h:1862 [inline]
generic_file_splice_read+0x240/0x640 fs/splice.c:419
do_splice_to fs/splice.c:902 [inline]
splice_direct_to_actor+0x40c/0xbd0 fs/splice.c:973
do_splice_direct+0x283/0x3d0 fs/splice.c:1082
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: 0033:0x7f9c6ba8c169
RSP: 002b:00007f9c6c72e168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f9c6bbabf80 RCX: 00007f9c6ba8c169
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000004
RBP: 00007f9c6bae7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0001000000201005 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd20f831bf R14: 00007f9c6c72e300 R15: 0000000000022000
INFO: task syz-executor.2:8340 blocked for more than 147 seconds.
Not tainted 6.4.0-rc1-syzkaller-00133-g9a48d6046722 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:24576 pid:8340 ppid:5028 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
io_schedule+0x8c/0x100 kernel/sched/core.c:8979
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:70 [inline]
lock_buffer include/linux/buffer_head.h:406 [inline]
__sync_dirty_buffer+0x120/0x380 fs/buffer.c:2807
__ext4_handle_dirty_metadata+0x2a6/0x820 fs/ext4/ext4_jbd2.c:387
ext4_convert_inline_data_nolock+0xaba/0xd80 fs/ext4/inline.c:1252
ext4_convert_inline_data+0x4da/0x620 fs/ext4/inline.c:2063
ext4_fallocate+0x14e/0x2000 fs/ext4/extents.c:4708
vfs_fallocate+0x54b/0x6b0 fs/open.c:324
ksys_fallocate fs/open.c:347 [inline]
__do_sys_fallocate fs/open.c:355 [inline]
__se_sys_fallocate fs/open.c:353 [inline]
__x64_sys_fallocate+0xbd/0x100 fs/open.c:353
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: 0033:0x7f9c6ba8c169
RSP: 002b:00007f9c6c70d168 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007f9c6bbac050 RCX: 00007f9c6ba8c169
RDX: 0000000001000000 RSI: 0000000000000008 RDI: 000000000000000b
RBP: 00007f9c6bae7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000010000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd20f831bf R14: 00007f9c6c70d300 R15: 0000000000022000
Showing all locks held in the system:
2 locks held by kworker/u4:1/12:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8cf27670 (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: ffffffff8cf27a30 (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: ffffffff8cf274a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by kworker/u4:3/46:
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc90000b77d20 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
2 locks held by kworker/u4:4/56:
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc90001577d20 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
2 locks held by getty/4754:
#0: ffff888028dd3098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2176
1 lock held by syz-executor.3/5038:
#0: ffff888085a1a0e0 (&type->s_umount_key#59){+.+.}-{3:3}, at: deactivate_super+0xad/0xf0 fs/super.c:361
1 lock held by syz-executor.5/5053:
#0: ffffffff8cf2cb78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
#0: ffffffff8cf2cb78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a3/0x890 kernel/rcu/tree_exp.h:992
3 locks held by kworker/0:7/5093:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc900047b7d20 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
#2: ffffffff8cf2cb78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#2: ffffffff8cf2cb78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x46c/0x890 kernel/rcu/tree_exp.h:992
2 locks held by kworker/u4:6/5108:
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc90004867d20 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
2 locks held by kworker/u4:8/5187:
#0: ffff888012479138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc90004bafd20 ((work_completion)(&ctx->exit_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
2 locks held by kworker/1:14/5685:
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2378
#1: ffffc9000b0dfd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2380
3 locks held by syz-executor.2/8330:
#0: ffff888032534460 (sb_writers#4){.+.+}-{0:0}, at: do_sendfile+0x5fb/0xff0 fs/read_write.c:1253
#1: ffff888030438fa0 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:830 [inline]
#1: ffff888030438fa0 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_create_folio mm/filemap.c:2541 [inline]
#1: ffff888030438fa0 (mapping.invalidate_lock){++++}-{3:3}, at: filemap_get_pages+0xb1c/0x20c0 mm/filemap.c:2602
#2: ffff888030438ac8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_readpage_inline+0x36/0x5f0 fs/ext4/inline.c:509
3 locks held by syz-executor.2/8340:
#0: ffff888032534460 (sb_writers#4){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2522 [inline]
#0: ffff888032534460 (sb_writers#4){.+.+}-{0:0}, at: vfs_fallocate+0x4be/0x6b0 fs/open.c:323
#1: ffff888030438e00 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline]
#1: ffff888030438e00 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_fallocate+0x146/0x2000 fs/ext4/extents.c:4707
#2: ffff888030438ac8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
#2: ffff888030438ac8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_convert_inline_data+0x3b6/0x620 fs/ext4/inline.c:2061
3 locks held by syz-executor.4/8530:
#0: ffff88807c5b8460 (sb_writers#4){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2522 [inline]
#0: ffff88807c5b8460 (sb_writers#4){.+.+}-{0:0}, at: vfs_fallocate+0x4be/0x6b0 fs/open.c:323
#1: ffff888030434a00 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline]
#1: ffff888030434a00 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_fallocate+0x146/0x2000 fs/ext4/extents.c:4707
#2: ffff8880304346c8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
#2: ffff8880304346c8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_convert_inline_data+0x3b6/0x620 fs/ext4/inline.c:2061
2 locks held by syz-executor.4/8545:
#0: ffff88807c5b8460 (sb_writers#4){.+.+}-{0:0}, at: do_sendfile+0x5fb/0xff0 fs/read_write.c:1253
#1: ffff888030434a00 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline]
#1: ffff888030434a00 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: ext4_buffered_write_iter+0xaf/0x3a0 fs/ext4/file.c:283
2 locks held by syz-executor.2/8857:
#0: ffff8880b993c1d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:558
#1: ffffe8ffffd76fc8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3a7/0x770 kernel/sched/psi.c:984
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.4.0-rc1-syzkaller-00133-g9a48d6046722 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
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: 8450 Comm: syz-executor.2 Not tainted 6.4.0-rc1-syzkaller-00133-g9a48d6046722 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
RIP: 0010:smk_curacc+0x0/0xd0 security/smack/smack_access.c:272
Code: 01 5b 41 5c 41 5e 41 5f 5d c3 89 e9 80 e1 07 80 c1 03 38 c1 7c 8f 48 89 ef e8 cc f5 f1 fd eb 85 66 2e 0f 1f 84 00 00 00 00 00 <66> 0f 1f 00 55 41 57 41 56 41 55 41 54 53 49 89 d6 41 89 f7 49 89
RSP: 0018:ffffc90004eff8f8 EFLAGS: 00000246
RAX: 1ffff110057d2353 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: ffffc90004eff940 RSI: 0000000000000001 RDI: ffffffff8d506680
RBP: ffffc90004effa18 R08: dffffc0000000000 R09: 0000000000000000
R10: ffffc90004eff968 R11: dffffc0000000001 R12: 1ffff920009dff24
R13: ffffc90004eff940 R14: ffff88802be91a98 R15: ffff88803550aae8
FS: 0000555556e97400(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555556ea0848 CR3: 0000000018b8c000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
smack_inode_permission+0x2dc/0x380 security/smack/smack_lsm.c:1143
security_inode_permission+0xa1/0xf0 security/security.c:2072
may_lookup fs/namei.c:1720 [inline]
link_path_walk+0x2da/0xe70 fs/namei.c:2267
path_parentat fs/namei.c:2526 [inline]
__filename_parentat+0x262/0x6f0 fs/namei.c:2550
filename_parentat fs/namei.c:2568 [inline]
do_unlinkat+0x188/0x950 fs/namei.c:4366
__do_sys_unlink fs/namei.c:4441 [inline]
__se_sys_unlink fs/namei.c:4439 [inline]
__x64_sys_unlink+0x49/0x50 fs/namei.c:4439
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: 0033:0x7f0e9408bad7
Code: 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 57 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd4b4420a8 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f0e9408bad7
RDX: 00007ffd4b4420e0 RSI: 00007ffd4b4420e0 RDI: 00007ffd4b442170
RBP: 00007ffd4b442170 R08: 0000000000000001 R09: 00007ffd4b441f40
R10: 0000555556e98853 R11: 0000000000000206 R12: 00007f0e940e6cdc
R13: 00007ffd4b443230 R14: 0000555556e98810 R15: 00007ffd4b443270