INFO: task syz-executor.2:31634 blocked for more than 143 seconds.
Not tainted 6.2.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:23328 pid:31634 ppid:5119 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x9d1/0xe40 kernel/sched/core.c:6555
schedule+0xcb/0x190 kernel/sched/core.c:6631
__wait_on_freeing_inode fs/inode.c:2196 [inline]
find_inode_fast+0x332/0x480 fs/inode.c:950
iget_locked+0xb1/0x830 fs/inode.c:1273
__ext4_iget+0x242/0x3f40 fs/ext4/inode.c:4861
ext4_xattr_inode_cache_find fs/ext4/xattr.c:1491 [inline]
ext4_xattr_inode_lookup_create fs/ext4/xattr.c:1527 [inline]
ext4_xattr_set_entry+0x2181/0x3a70 fs/ext4/xattr.c:1669
ext4_xattr_block_set+0x8c3/0x3760 fs/ext4/xattr.c:1975
ext4_xattr_set_handle+0xe1c/0x1680 fs/ext4/xattr.c:2390
ext4_xattr_set+0x245/0x3d0 fs/ext4/xattr.c:2492
__vfs_setxattr+0x485/0x4c0 fs/xattr.c:202
__vfs_setxattr_noperm+0x128/0x5d0 fs/xattr.c:236
vfs_setxattr+0x228/0x450 fs/xattr.c:323
do_setxattr fs/xattr.c:608 [inline]
setxattr fs/xattr.c:631 [inline]
path_setxattr+0x393/0x4c0 fs/xattr.c:650
__do_sys_setxattr fs/xattr.c:666 [inline]
__se_sys_setxattr fs/xattr.c:662 [inline]
__x64_sys_setxattr+0xb7/0xd0 fs/xattr.c:662
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe5a5c8c0a9
RSP: 002b:00007fe5a6957168 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007fe5a5dac050 RCX: 00007fe5a5c8c0a9
RDX: 00000000200005c0 RSI: 0000000020000180 RDI: 00000000200000c0
RBP: 00007fe5a5ce7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000002000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd3a77138f R14: 00007fe5a6957300 R15: 0000000000022000
INFO: task syz-executor.2:31637 blocked for more than 149 seconds.
Not tainted 6.2.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:25432 pid:31637 ppid:5119 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x9d1/0xe40 kernel/sched/core.c:6555
schedule+0xcb/0x190 kernel/sched/core.c:6631
mb_cache_entry_wait_unused+0x165/0x240 fs/mbcache.c:148
ext4_evict_ea_inode+0x148/0x300 fs/ext4/xattr.c:449
ext4_evict_inode+0x112/0x10b0 fs/ext4/inode.c:181
evict+0x2a4/0x620 fs/inode.c:664
ext4_xattr_set_entry+0x1c00/0x3a70 fs/ext4/xattr.c:1806
ext4_xattr_block_set+0xf78/0x3760 fs/ext4/xattr.c:1906
ext4_xattr_set_handle+0xe1c/0x1680 fs/ext4/xattr.c:2390
ext4_xattr_set+0x245/0x3d0 fs/ext4/xattr.c:2492
__vfs_setxattr+0x485/0x4c0 fs/xattr.c:202
__vfs_setxattr_noperm+0x128/0x5d0 fs/xattr.c:236
vfs_setxattr+0x228/0x450 fs/xattr.c:323
do_setxattr fs/xattr.c:608 [inline]
setxattr fs/xattr.c:631 [inline]
path_setxattr+0x393/0x4c0 fs/xattr.c:650
__do_sys_setxattr fs/xattr.c:666 [inline]
__se_sys_setxattr fs/xattr.c:662 [inline]
__x64_sys_setxattr+0xb7/0xd0 fs/xattr.c:662
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe5a5c8c0a9
RSP: 002b:00007fe5a6936168 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007fe5a5dac120 RCX: 00007fe5a5c8c0a9
RDX: 0000000000000000 RSI: 0000000020000500 RDI: 00000000200004c0
RBP: 00007fe5a5ce7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd3a77138f R14: 00007fe5a6936300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d523910 (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: ffffffff8d524110 (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: ffffffff8d523740 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4745:
#0: ffff88802c9a3098 (&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+0x6e8/0x1e50 drivers/tty/n_tty.c:2177
2 locks held by kworker/0:7/5185:
#0: ffff888012872538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc90004c07d00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
3 locks held by kworker/0:13/5698:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc9000b3afd00 (key_gc_work){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffffffff8d528d78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
#2: ffffffff8d528d78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a6/0x890 kernel/rcu/tree_exp.h:946
3 locks held by kworker/u4:15/5866:
3 locks held by kworker/1:4/29158:
#0: ffff888012870d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc900055f7d00 (free_ipc_work){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffffffff8d528d78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:324 [inline]
#2: ffffffff8d528d78 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x46f/0x890 kernel/rcu/tree_exp.h:946
3 locks held by syz-executor.2/31634:
#0: ffff8880228ea460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:508
#1: ffff8880790b2c20 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff8880790b2c20 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: vfs_setxattr+0x1e8/0x450 fs/xattr.c:322
#2: ffff8880790b28e8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
#2: ffff8880790b28e8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_xattr_set_handle+0x26b/0x1680 fs/ext4/xattr.c:2305
3 locks held by syz-executor.2/31637:
#0: ffff8880228ea460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:508
#1: ffff888027a79810 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff888027a79810 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: vfs_setxattr+0x1e8/0x450 fs/xattr.c:322
#2: ffff888027a794d8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
#2: ffff888027a794d8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_xattr_set_handle+0x26b/0x1680 fs/ext4/xattr.c:2305
1 lock held by syz-executor.2/639:
1 lock held by syz-executor.2/641:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x4e3/0x560 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x19b/0x3e0 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: 683 Comm: syz-executor.1 Not tainted 6.2.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:stack_not_used include/linux/sched/task_stack.h:107 [inline]
RIP: 0010:check_stack_usage kernel/exit.c:772 [inline]
RIP: 0010:do_exit+0x1840/0x2150 kernel/exit.c:911
Code: fe fd ff 48 83 c3 20 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 8d 59 8f 00 48 8b 1b 41 bc 08 00 00 00 0f 1f 40 00 <4a> 8d 3c 23 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80
RSP: 0018:ffffc90014cd7b00 EFLAGS: 00000216
RAX: ffffffff815520fc RBX: ffffc90014cd0000 RCX: ffff88801d21d7c0
RDX: 0000000000000000 RSI: ffffffff8b0da9c0 RDI: ffffc90014cd54e8
RBP: ffffc90014cd7c40 R08: dffffc0000000000 R09: fffffbfff1d603b6
R10: fffffbfff1d603b6 R11: 1ffffffff1d603b5 R12: 00000000000054f0
R13: ffffc90014cd7ba0 R14: ffff88801d21eaa0 R15: ffff88801d21d7c0
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efe761a8000 CR3: 0000000090021000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
do_group_exit+0x1fd/0x2b0 kernel/exit.c:1012
get_signal+0x1755/0x1820 kernel/signal.c:2859
arch_do_signal_or_restart+0x8d/0x5f0 arch/x86/kernel/signal.c:306
exit_to_user_mode_loop+0x74/0x160 kernel/entry/common.c:168
exit_to_user_mode_prepare+0xad/0x110 kernel/entry/common.c:203
__syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline]
syscall_exit_to_user_mode+0x2e/0x60 kernel/entry/common.c:296
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7efe7608c0a9
Code: Unable to access opcode bytes at 0x7efe7608c07f.
RSP: 002b:00007efe76df3218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007efe761abf88 RCX: 00007efe7608c0a9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007efe761abf8c
RBP: 00007efe761abf80 R08: 0000000000000010 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007efe761abf8c
R13: 00007fff1076a5ef R14: 00007efe76df3300 R15: 0000000000022000