INFO: task syz-executor.3:29385 blocked for more than 143 seconds.
Not tainted 6.2.0-rc6-syzkaller-00003-g22b8077d0fce #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:19880 pid:29385 ppid:5126 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0x995/0xe20 kernel/sched/core.c:6606
schedule+0xcb/0x190 kernel/sched/core.c:6682
__wait_on_freeing_inode fs/inode.c:2196 [inline]
find_inode_fast+0x35a/0x4c0 fs/inode.c:950
iget_locked+0xb1/0x830 fs/inode.c:1273
__ext4_iget+0x22e/0x3ed0 fs/ext4/inode.c:4861
ext4_xattr_inode_iget+0x68/0x4e0 fs/ext4/xattr.c:391
ext4_xattr_inode_get+0x136/0x400 fs/ext4/xattr.c:506
ext4_xattr_move_to_block fs/ext4/xattr.c:2584 [inline]
ext4_xattr_make_inode_space fs/ext4/xattr.c:2685 [inline]
ext4_expand_extra_isize_ea+0xf93/0x1cd0 fs/ext4/xattr.c:2777
__ext4_expand_extra_isize+0x30b/0x410 fs/ext4/inode.c:5957
ext4_try_to_expand_extra_isize fs/ext4/inode.c:6000 [inline]
__ext4_mark_inode_dirty+0x51a/0x670 fs/ext4/inode.c:6078
ext4_evict_inode+0xb7c/0x10b0 fs/ext4/inode.c:279
evict+0x2a4/0x620 fs/inode.c:664
ext4_orphan_cleanup+0xb60/0x1340 fs/ext4/orphan.c:474
__ext4_fill_super fs/ext4/super.c:5516 [inline]
ext4_fill_super+0x81cd/0x8700 fs/ext4/super.c:5644
get_tree_bdev+0x400/0x620 fs/super.c:1282
vfs_get_tree+0x88/0x270 fs/super.c:1489
do_new_mount+0x289/0xad0 fs/namespace.c:3145
do_mount fs/namespace.c:3488 [inline]
__do_sys_mount fs/namespace.c:3697 [inline]
__se_sys_mount+0x2d3/0x3c0 fs/namespace.c:3674
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f46a588d5fa
RSP: 002b:00007f46a65eef88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000430 RCX: 00007f46a588d5fa
RDX: 0000000020000440 RSI: 00000000200000c0 RDI: 00007f46a65eefe0
RBP: 00007f46a65ef020 R08: 00007f46a65ef020 R09: 0000000001000c00
R10: 0000000001000c00 R11: 0000000000000202 R12: 0000000020000440
R13: 00000000200000c0 R14: 00007f46a65eefe0 R15: 0000000020000100
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d326f10 (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: ffffffff8d327710 (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: ffffffff8d326d40 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4756:
#0: ffff88802824f098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1650 drivers/tty/n_tty.c:2177
3 locks held by kworker/u4:11/11605:
#0: ffff8880b993a1d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:537
#1: ffffc90003a6fd00 ((work_completion)(&(&bat_priv->nc.work)->work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0 kernel/workqueue.c:2264
#2: ffff8880b9928558 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x12a/0x270 kernel/time/timer.c:999
3 locks held by syz-executor.3/29385:
#0: ffff888030c940e0 (&type->s_umount_key#28/1){+.+.}-{3:3}, at: alloc_super+0x212/0x920 fs/super.c:228
#1: ffff888030c94650 (sb_internal){.+.+}-{0:0}, at: __sb_start_write include/linux/fs.h:1814 [inline]
#1: ffff888030c94650 (sb_internal){.+.+}-{0:0}, at: sb_start_intwrite include/linux/fs.h:1936 [inline]
#1: ffff888030c94650 (sb_internal){.+.+}-{0:0}, at: ext4_evict_inode+0x4cd/0x10b0 fs/ext4/inode.c:240
#2: ffff8880770e0ad0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_trylock_xattr fs/ext4/xattr.h:162 [inline]
#2: ffff8880770e0ad0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_try_to_expand_extra_isize fs/ext4/inode.c:5997 [inline]
#2: ffff8880770e0ad0 (&ei->xattr_sem){++++}-{3:3}, at: __ext4_mark_inode_dirty+0x479/0x670 fs/ext4/inode.c:6078
1 lock held by syz-executor.2/31061:
#0: ffff888030c940e0 (&type->s_umount_key#32){++++}-{3:3}, at: iterate_supers+0xb0/0x1f0 fs/super.c:722
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc6-syzkaller-00003-g22b8077d0fce #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x290 lib/dump_stack.c:106
nmi_cpu_backtrace+0x46f/0x4f0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1ba/0x420 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 11605 Comm: kworker/u4:11 Not tainted 6.2.0-rc6-syzkaller-00003-g22b8077d0fce #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:lock_acquire+0x89/0x3c0 kernel/locking/lockdep.c:5636
Code: 03 48 b8 f1 f1 f1 f1 00 f2 f2 f2 4b 89 44 25 00 43 c7 44 25 09 f2 f2 f2 00 43 c7 44 25 11 f3 f3 f3 f3 66 43 c7 44 25 15 f3 f3 <43> c6 44 25 17 f3 89 54 24 0c 89 4c 24 08 4c 89 4c 24 18 ff 75 10
RSP: 0018:ffffc90003a6f9e0 EFLAGS: 00000a02
RAX: f2f2f200f1f1f1f1 RBX: ffff88808a301e18 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88808a301e18
RBP: ffffc90003a6fb10 R08: 0000000000000001 R09: 0000000000000000
R10: fffffbfff20fd84c R11: 1ffffffff20fd84b R12: dffffc0000000000
R13: 1ffff9200074df40 R14: 0000000000000001 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055631a476150 CR3: 000000002ad00000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
_raw_spin_lock_bh+0x31/0x40 kernel/locking/spinlock.c:178
spin_lock_bh include/linux/spinlock.h:355 [inline]
batadv_nc_purge_paths+0xe0/0x3f0 net/batman-adv/network-coding.c:442
batadv_nc_worker+0x2da/0x5b0 net/batman-adv/network-coding.c:720
process_one_work+0x877/0xdb0 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308