INFO: task syz.3.1845:7953 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.3.1845 state:D stack:24552 pid:7953 ppid:3642 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: 0033:0x7fe34217dff9
RSP: 002b:00007fe342fa7038 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007fe342335f80 RCX: 00007fe34217dff9
RDX: 0000000020000880 RSI: 0000000020000240 RDI: 0000000020000300
RBP: 00007fe3421f0296 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000ff27 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe342335f80 R15: 00007ffe348dea48
Showing all locks held in the system:
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: ffff88802e8c2098 (&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
4 locks held by udevd/3633:
#0: ffff888076f3ad58 (&p->lock){+.+.}-{3:3}, at: seq_read_iter+0xae/0xd10 fs/seq_file.c:182
#1: ffff888059110488 (&of->mutex){+.+.}-{3:3}, at: kernfs_seq_start+0x4f/0x3a0 fs/kernfs/file.c:154
#2: ffff8880b8f3a9d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x26/0x140 kernel/sched/core.c:537
#3: ffff8880b8f27788 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_change+0xf9/0x270 kernel/sched/psi.c:925
1 lock held by syz.4.787/5495:
3 locks held by syz.3.1845/7953:
#0: ffff888073f8a460 (sb_writers#36){.+.+}-{0:0}, at: mnt_want_write+0x3b/0x80 fs/namespace.c:393
#1: ffff88807176efb8 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
#1: ffff88807176efb8 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: vfs_setxattr+0x1dd/0x420 fs/xattr.c:308
#2: ffff888073f8a650 (sb_internal#2){.+.+}-{0:0}, at: xfs_trans_alloc_inode+0x129/0x450 fs/xfs/xfs_trans.c:1198
1 lock held by dhcpcd-run-hook/11261:
=============================================
NMI backtrace for cpu 1
CPU: 1 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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 9093 Comm: kworker/u4:14 Not tainted 6.1.112-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:mark_held_locks kernel/locking/lockdep.c:4218 [inline]
RIP: 0010:__trace_hardirqs_on_caller kernel/locking/lockdep.c:4248 [inline]
RIP: 0010:lockdep_hardirqs_on_prepare+0x292/0x7a0 kernel/locking/lockdep.c:4315
Code: 03 00 0f 94 c2 83 f2 03 48 8b 7c 24 10 48 89 de e8 63 a3 00 00 48 ba 00 00 00 00 00 fc ff df 85 c0 0f 84 9d 01 00 00 49 ff c5 <41> 0f b6 04 17 84 c0 75 33 49 63 06 48 83 c3 28 49 83 c4 28 49 39
RSP: 0018:ffffc90004a579e0 EFLAGS: 00000002
RAX: 0000000000000001 RBX: ffff8880277c28c8 RCX: ffffffff816af0fa
RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffffffff911dd2f0
RBP: ffffc90004a57a88 R08: dffffc0000000000 R09: fffffbfff223ba5f
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880277c28e8
R13: 0000000000000002 R14: ffff8880277c2898 R15: 1ffff11004ef8513
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8e4bd842a9 CR3: 000000001dfd5000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
trace_hardirqs_on+0x34/0x40 kernel/trace/trace_preemptirq.c:49
__local_bh_enable_ip+0x164/0x1f0 kernel/softirq.c:401
spin_unlock_bh include/linux/spinlock.h:396 [inline]
batadv_nc_purge_paths+0x30e/0x3b0 net/batman-adv/network-coding.c:471
batadv_nc_worker+0x361/0x610 net/batman-adv/network-coding.c:722
process_one_work+0x8a9/0x11d0 kernel/workqueue.c:2292
worker_thread+0xa47/0x1200 kernel/workqueue.c:2439
kthread+0x28d/0x320 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295