INFO: task syz-executor.4:13517 blocked for more than 143 seconds.
Not tainted 6.9.0-rc4-next-20240416-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:24312 pid:13517 tgid:13516 ppid:12036 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x17e8/0x4a50 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6837
xlog_grant_head_wait+0x397/0x970 fs/xfs/xfs_log.c:307
xlog_grant_head_check+0x299/0x480
xfs_log_reserve+0x3d4/0xb80 fs/xfs/xfs_log.c:486
xfs_trans_reserve+0x239/0x6b0 fs/xfs/xfs_trans.c:195
xfs_trans_alloc+0x40e/0x830 fs/xfs/xfs_trans.c:284
xfs_trans_alloc_inode+0x1ac/0x5d0 fs/xfs/xfs_trans.c:1203
xfs_attr_set+0xa56/0x1680 fs/xfs/libxfs/xfs_attr.c:983
xfs_attr_change fs/xfs/xfs_xattr.c:117 [inline]
xfs_xattr_set+0x22b/0x3a0 fs/xfs/xfs_xattr.c:165
__vfs_setxattr+0x468/0x4a0 fs/xattr.c:200
__vfs_setxattr_noperm+0x12e/0x660 fs/xattr.c:234
vfs_setxattr+0x221/0x430 fs/xattr.c:321
do_setxattr fs/xattr.c:629 [inline]
setxattr+0x25d/0x2f0 fs/xattr.c:652
path_setxattr+0x1c0/0x2a0 fs/xattr.c:671
__do_sys_lsetxattr fs/xattr.c:694 [inline]
__se_sys_lsetxattr fs/xattr.c:690 [inline]
__x64_sys_lsetxattr+0xb8/0xd0 fs/xattr.c:690
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4c4c27dea9
RSP: 002b:00007f4c4d0b90c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd
RAX: ffffffffffffffda RBX: 00007f4c4c3abf80 RCX: 00007f4c4c27dea9
RDX: 0000000020000100 RSI: 0000000020000040 RDI: 0000000020000000
RBP: 00007f4c4c2ca4a4 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000fffe R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f4c4c3abf80 R15: 00007ffd26d83ee8
Showing all locks held in the system:
2 locks held by kworker/u8:1/12:
1 lock held by khungtaskd/30:
#0: ffffffff8e333b60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8e333b60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff8e333b60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
2 locks held by getty/4839:
#0: ffff8880291080a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
3 locks held by syz-executor.4/13517:
#0: ffff888069768420 (sb_writers#24){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:409
#1: ffff88807d700af8 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: inode_lock include/linux/fs.h:791 [inline]
#1: ffff88807d700af8 (&inode->i_sb->s_type->i_mutex_dir_key){++++}-{3:3}, at: vfs_setxattr+0x1e1/0x430 fs/xattr.c:320
#2: ffff888069768610 (sb_internal#3){.+.+}-{0:0}, at: xfs_trans_alloc_inode+0x1ac/0x5d0 fs/xfs/xfs_trans.c:1203
1 lock held by syz-executor.0/16716:
#0: ffffffff8f5d5348 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline]
#0: ffffffff8f5d5348 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3e/0x1b0 drivers/net/tun.c:3498
4 locks held by kvm-nx-lpage-re/16727:
#0: ffffffff8e3614c8 (cgroup_mutex){+.+.}-{3:3}, at: cgroup_lock include/linux/cgroup.h:368 [inline]
#0: ffffffff8e3614c8 (cgroup_mutex){+.+.}-{3:3}, at: cgroup_attach_task_all+0x27/0xe0 kernel/cgroup/cgroup-v1.c:61
#1: ffffffff8e1ce1d0 (cpu_hotplug_lock){++++}-{0:0}, at: cgroup_attach_lock+0x11/0x40 kernel/cgroup/cgroup.c:2413
#2: ffffffff8e3616b0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: cgroup_attach_task_all+0x31/0xe0 kernel/cgroup/cgroup-v1.c:62
#3: ffffffff8e338f38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline]
#3: ffffffff8e338f38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:939
1 lock held by syz-executor.4/16734:
#0: ffffffff8f5d5348 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f5d5348 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6591
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 30 Comm: khungtaskd Not tainted 6.9.0-rc4-next-20240416-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xfde/0x1020 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 1101 Comm: kworker/u8:7 Not tainted 6.9.0-rc4-next-20240416-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:__raw_callee_save___pv_queued_spin_unlock+0x10/0x18
Code: 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 52 b8 01 00 00 00 31 d2 f0 0f b0 17 <75> 06 5a c3 cc cc cc cc 56 0f b6 f0 e8 9f ff ff ff 5e 5a c3 cc cc
RSP: 0018:ffffc90004bc7a38 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 1ffff1100d224a01 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888069125000
RBP: dffffc0000000000 R08: ffff888069125003 R09: 1ffff1100d224a00
R10: dffffc0000000000 R11: ffffed100d224a01 R12: 1ffff1100d224a02
R13: ffff888069125010 R14: ffff888069125008 R15: ffff888069125000
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2fb21000 CR3: 000000004cdb6000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000003ef1 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
pv_queued_spin_unlock arch/x86/include/asm/paravirt.h:589 [inline]
queued_spin_unlock arch/x86/include/asm/qspinlock.h:57 [inline]
do_raw_spin_unlock+0x13c/0x8b0 kernel/locking/spinlock_debug.c:142
__raw_spin_unlock_bh include/linux/spinlock_api_smp.h:166 [inline]
_raw_spin_unlock_bh+0x23/0x40 kernel/locking/spinlock.c:210
spin_unlock_bh include/linux/spinlock.h:396 [inline]
batadv_nc_purge_paths+0x30f/0x3b0 net/batman-adv/network-coding.c:471
batadv_nc_worker+0x328/0x610 net/batman-adv/network-coding.c:720
process_one_work kernel/workqueue.c:3218 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3299
worker_thread+0x86d/0xd70 kernel/workqueue.c:3380
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244