INFO: task syz.2.1965:8076 blocked for more than 143 seconds.
Not tainted 6.1.112-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.1965 state:D stack:22600 pid:8076 ppid:3641 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5241 [inline]
__schedule+0x143f/0x4570 kernel/sched/core.c:6558
schedule+0xbf/0x180 kernel/sched/core.c:6634
xlog_grant_head_wait+0x3b6/0xa00 fs/xfs/xfs_log.c:307
xlog_grant_head_check+0x295/0x480
xfs_log_reserve+0x3e1/0xc30 fs/xfs/xfs_log.c:486
xfs_trans_reserve+0x239/0x6a0 fs/xfs/xfs_trans.c:194
xfs_trans_alloc+0x41b/0x870 fs/xfs/xfs_trans.c:283
xfs_trans_alloc_inode+0x129/0x450 fs/xfs/xfs_trans.c:1198
xfs_attr_set+0xa4e/0x1660 fs/xfs/libxfs/xfs_attr.c:1024
xfs_attr_change fs/xfs/xfs_xattr.c:106 [inline]
xfs_xattr_set+0x227/0x3a0 fs/xfs/xfs_xattr.c:151
__vfs_setxattr+0x3e7/0x420 fs/xattr.c:182
__vfs_setxattr_noperm+0x12a/0x5e0 fs/xattr.c:216
vfs_setxattr+0x21d/0x420 fs/xattr.c:309
do_setxattr fs/xattr.c:594 [inline]
setxattr+0x250/0x2b0 fs/xattr.c:617
path_setxattr+0x1bc/0x2a0 fs/xattr.c:636
__do_sys_setxattr fs/xattr.c:652 [inline]
__se_sys_setxattr fs/xattr.c:648 [inline]
__x64_sys_setxattr+0xb7/0xd0 fs/xattr.c:648
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f196ad7dff9
RSP: 002b:00007f196bb9d038 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007f196af35f80 RCX: 00007f196ad7dff9
RDX: 0000000020000880 RSI: 0000000020000240 RDI: 0000000020000300
RBP: 00007f196adf0296 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000ff27 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f196af35f80 R15: 00007ffef16f3fe8
Showing all locks held in the system:
3 locks held by kworker/u4:0/9:
#0: ffff888017c79138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267
#1: ffffc900000e7d20 (connector_reaper_work){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267
#2:
ffff8880b8f28358
(&base->lock){-.-.}-{2:2}, at: __mod_timer+0x62d/0xee0 kernel/time/timer.c:1096
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d32b1d0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:517
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8d32b9d0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xe30 kernel/rcu/tasks.h:517
1 lock held by khungtaskd/28:
#0: ffffffff8d32b000 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
#0: ffffffff8d32b000 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline]
#0: ffffffff8d32b000 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6494
2 locks held by getty/3394:
#0: ffff88802e98f098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a7/0x1db0 drivers/tty/n_tty.c:2198
3 locks held by kworker/u5:4/3647:
#0: ffff888019e45138 ((wq_completion)hci5){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267
#1: ffffc900040afd20 ((work_completion)(&hdev->cmd_sync_work)){+.+.}-{0:0}, at: process_one_work+0x7a9/0x11d0 kernel/workqueue.c:2267
#2: ffff88807c9d50b8 (&hdev->req_lock){+.+.}-{3:3}, at: hci_cmd_sync_work+0x1dc/0x400 net/bluetooth/hci_sync.c:321
3 locks held by syz.2.1965/8076:
#0: ffff888027a56460 (sb_writers#33){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:393
#1: ffff888071efb1b8 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
#1: ffff888071efb1b8 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: vfs_setxattr+0x1dd/0x420 fs/xattr.c:308
#2: ffff888027a56650 (sb_internal#6){.+.+}-{0:0}, at: xfs_trans_alloc_inode+0x129/0x450 fs/xfs/xfs_trans.c:1198
4 locks held by syz.4.2642/9544:
2 locks held by syz.4.4294/13111:
#0: ffffffff8e4fa7e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:74 [inline]
#0: ffffffff8e4fa7e8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x7c1/0xff0 net/core/rtnetlink.c:6118
#1: ffffffff8d3304c0 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x48/0x5f0 kernel/rcu/tree.c:4019
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.1.112-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x4e1/0x560 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1ae/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+0xf88/0xfd0 kernel/hung_task.c:377
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 9544 Comm: syz.4.2642 Not tainted 6.1.112-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:io_serial_in+0x72/0xb0 drivers/tty/serial/8250/8250_port.c:461
Code: f4 72 d7 fc 89 e9 41 d3 e6 48 83 c3 40 48 89 d8 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 15 f5 2e fd 44 03 33 44 89 f2 ec <0f> b6 c0 5b 41 5e 41 5f 5d c3 89 e9 80 e1 07 38 c1 7c ad 48 89 ef
RSP: 0018:ffffc900174169f8 EFLAGS: 00000002
RAX: 1ffffffff2ed7500 RBX: ffffffff976bae60 RCX: 0000000000000000
RDX: 00000000000003fd RSI: 000000000003ffff RDI: 0000000000040000
RBP: 0000000000000000 R08: ffffffff84b33c42 R09: ffffed1004a04047
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff97376e30
R13: 00000000000026f4 R14: 00000000000003fd R15: dffffc0000000000
FS: 00007fd100eef6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000080 CR3: 000000007316e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
serial_in drivers/tty/serial/8250/8250.h:117 [inline]
serial_lsr_in drivers/tty/serial/8250/8250.h:139 [inline]
wait_for_lsr drivers/tty/serial/8250/8250_port.c:2100 [inline]
serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:3367 [inline]
serial8250_console_write+0x1057/0x1750 drivers/tty/serial/8250/8250_port.c:3445
call_console_driver kernel/printk/printk.c:1977 [inline]
console_emit_next_record+0xbb4/0x1000 kernel/printk/printk.c:2777
console_unlock+0x278/0x7c0 kernel/printk/printk.c:2906
vprintk_emit+0x523/0x740 kernel/printk/printk.c:2303
_printk+0xd1/0x111 kernel/printk/printk.c:2328
_erofs_err+0x137/0x180 fs/erofs/super.c:35
z_erofs_pcluster_readmore+0x300/0x450 fs/erofs/zdata.c:1676
z_erofs_read_folio+0x30c/0x760 fs/erofs/zdata.c:1701
filemap_read_folio+0x199/0x780 mm/filemap.c:2461
do_read_cache_folio+0x2ee/0x810 mm/filemap.c:3598
erofs_bread+0x149/0x610 fs/erofs/data.c:46
find_target_block_classic fs/erofs/namei.c:108 [inline]
erofs_namei+0x1ad/0xca0 fs/erofs/namei.c:184
erofs_lookup+0x1d6/0x4d0 fs/erofs/namei.c:212
lookup_open fs/namei.c:3462 [inline]
open_last_lookups fs/namei.c:3552 [inline]
path_openat+0x10fb/0x2e60 fs/namei.c:3782
do_filp_open+0x230/0x480 fs/namei.c:3812
do_sys_openat2+0x13b/0x4f0 fs/open.c:1318
do_sys_open fs/open.c:1334 [inline]
__do_sys_openat fs/open.c:1350 [inline]
__se_sys_openat fs/open.c:1345 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1345
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fd10017dff9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd100eef038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fd100335f80 RCX: 00007fd10017dff9
RDX: 0000000000000000 RSI: 0000000020000040 RDI: ffffffffffffff9c
RBP: 00007fd1001f0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fd100335f80 R15: 00007ffecdb86158