INFO: task syz-executor.2:10907 blocked for more than 144 seconds.
Not tainted 6.5.0-rc3-syzkaller-00018-g0b5547c51827 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:26368 pid:10907 ppid:5059 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6710
schedule+0xe7/0x1b0 kernel/sched/core.c:6786
__wait_on_freeing_inode+0xf1/0x140 fs/inode.c:2240
find_inode_fast+0x150/0x200 fs/inode.c:950
iget_locked+0xa2/0x700 fs/inode.c:1317
__ext4_iget+0x3ca/0x43b0 fs/ext4/inode.c:4670
ext4_xattr_inode_cache_find fs/ext4/xattr.c:1542 [inline]
ext4_xattr_inode_lookup_create fs/ext4/xattr.c:1577 [inline]
ext4_xattr_set_entry+0x1cf3/0x3c70 fs/ext4/xattr.c:1719
ext4_xattr_block_set+0xcbf/0x30e0 fs/ext4/xattr.c:2039
ext4_xattr_set_handle+0xd72/0x14c0 fs/ext4/xattr.c:2456
ext4_xattr_set+0x149/0x370 fs/ext4/xattr.c:2558
__vfs_setxattr+0x173/0x1d0 fs/xattr.c:201
__vfs_setxattr_noperm+0x127/0x5e0 fs/xattr.c:235
__vfs_setxattr_locked+0x17e/0x250 fs/xattr.c:296
vfs_setxattr+0x146/0x350 fs/xattr.c:322
do_setxattr+0x142/0x170 fs/xattr.c:630
setxattr+0x159/0x170 fs/xattr.c:653
path_setxattr+0x1a3/0x1d0 fs/xattr.c:672
__do_sys_setxattr fs/xattr.c:688 [inline]
__se_sys_setxattr fs/xattr.c:684 [inline]
__x64_sys_setxattr+0xc4/0x160 fs/xattr.c:684
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd70127cb29
RSP: 002b:00007fd7020530c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007fd70139c050 RCX: 00007fd70127cb29
RDX: 00000000200005c0 RSI: 0000000020000180 RDI: 00000000200000c0
RBP: 00007fd7012c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000002000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fd70139c050 R15: 00007ffc78f18ad8
INFO: task syz-executor.2:10910 blocked for more than 145 seconds.
Not tainted 6.5.0-rc3-syzkaller-00018-g0b5547c51827 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:26720 pid:10910 ppid:5059 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0xee1/0x59f0 kernel/sched/core.c:6710
schedule+0xe7/0x1b0 kernel/sched/core.c:6786
mb_cache_entry_wait_unused+0x182/0x200 fs/mbcache.c:148
ext4_evict_ea_inode+0x190/0x2e0 fs/ext4/xattr.c:480
ext4_evict_inode+0x9c2/0x1a30 fs/ext4/inode.c:180
evict+0x2ed/0x6b0 fs/inode.c:665
iput_final fs/inode.c:1791 [inline]
iput.part.0+0x55e/0x7a0 fs/inode.c:1817
iput+0x5c/0x80 fs/inode.c:1807
ext4_xattr_set_entry+0x721/0x3c70 fs/ext4/xattr.c:1870
ext4_xattr_block_set+0x678/0x30e0 fs/ext4/xattr.c:1970
ext4_xattr_set_handle+0xd72/0x14c0 fs/ext4/xattr.c:2456
ext4_xattr_set+0x149/0x370 fs/ext4/xattr.c:2558
__vfs_setxattr+0x173/0x1d0 fs/xattr.c:201
__vfs_setxattr_noperm+0x127/0x5e0 fs/xattr.c:235
__vfs_setxattr_locked+0x17e/0x250 fs/xattr.c:296
vfs_setxattr+0x146/0x350 fs/xattr.c:322
do_setxattr+0x142/0x170 fs/xattr.c:630
setxattr+0x159/0x170 fs/xattr.c:653
path_setxattr+0x1a3/0x1d0 fs/xattr.c:672
__do_sys_setxattr fs/xattr.c:688 [inline]
__se_sys_setxattr fs/xattr.c:684 [inline]
__x64_sys_setxattr+0xc4/0x160 fs/xattr.c:684
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd70127cb29
RSP: 002b:00007fd7020320c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007fd70139c120 RCX: 00007fd70127cb29
RDX: 0000000000000000 RSI: 00000000200004c0 RDI: 0000000020000300
RBP: 00007fd7012c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fd70139c120 R15: 00007ffc78f18ad8
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8c9a2730 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x2c/0xe20 kernel/rcu/tasks.h:522
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8c9a2430 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x2c/0xe20 kernel/rcu/tasks.h:522
1 lock held by khungtaskd/27:
#0: ffffffff8c9a3340 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6615
2 locks held by getty/4772:
#0: ffff88814bfc2098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900020382f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfcb/0x1480 drivers/tty/n_tty.c:2187
3 locks held by kworker/u4:6/5321:
3 locks held by kworker/0:2/9044:
#0: ffff888012869d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:20 [inline]
#0: ffff888012869d38 ((wq_completion)events){+.+.}-{0:0}, at: raw_atomic64_set include/linux/atomic/atomic-arch-fallback.h:2608 [inline]
#0: ffff888012869d38 ((wq_completion)events){+.+.}-{0:0}, at: raw_atomic_long_set include/linux/atomic/atomic-long.h:79 [inline]
#0: ffff888012869d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:3196 [inline]
#0: ffff888012869d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:675 [inline]
#0: ffff888012869d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:702 [inline]
#0: ffff888012869d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x96a/0x16f0 kernel/workqueue.c:2567
#1: ffffc90006117d80 (fqdir_free_work){+.+.}-{0:0}, at: process_one_work+0x99e/0x16f0 kernel/workqueue.c:2571
#2: ffffffff8c9ae6c0 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x48/0x6c0 kernel/rcu/tree.c:3997
3 locks held by syz-executor.2/10907:
#0: ffff888034950410 (sb_writers#5){.+.+}-{0:0}, at: path_setxattr+0xc3/0x1d0 fs/xattr.c:670
#1: ffff88803fdeb980 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:771 [inline]
#1: ffff88803fdeb980 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: vfs_setxattr+0x123/0x350 fs/xattr.c:321
#2: ffff88803fdeb648 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
#2: ffff88803fdeb648 (&ei->xattr_sem){++++}-{3:3}, at: ext4_xattr_set_handle+0x167/0x14c0 fs/ext4/xattr.c:2371
3 locks held by syz-executor.2/10910:
#0: ffff888034950410 (sb_writers#5){.+.+}-{0:0}, at: path_setxattr+0xc3/0x1d0 fs/xattr.c:670
#1: ffff888035d26800 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock include/linux/fs.h:771 [inline]
#1: ffff888035d26800 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: vfs_setxattr+0x123/0x350 fs/xattr.c:321
#2: ffff888035d264c8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
#2: ffff888035d264c8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_xattr_set_handle+0x167/0x14c0 fs/ext4/xattr.c:2371
2 locks held by syz-executor.2/11593:
#0: ffffffff8e3c1410 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x2d5/0x670 net/core/net_namespace.c:487
#1: ffffffff8c9ae6c0 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x48/0x6c0 kernel/rcu/tree.c:3997
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 6.5.0-rc3-syzkaller-00018-g0b5547c51827 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x277/0x380 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x2ac/0x310 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xf29/0x11b0 kernel/hung_task.c:379
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:296
RIP: 0000:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 7783 Comm: kworker/u4:21 Not tainted 6.5.0-rc3-syzkaller-00018-g0b5547c51827 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
Workqueue: bat_events batadv_nc_worker
RIP: 0010:__lock_acquire+0x11a/0x5de0 kernel/locking/lockdep.c:5012
Code: 85 c0 0f 84 be 0d 00 00 48 ba 00 00 00 00 00 fc ff df 4c 89 d1 48 c1 e9 03 80 3c 11 00 0f 85 e8 40 00 00 49 81 3a a0 89 47 90 <0f> 84 96 0d 00 00 41 83 fd 01 0f 86 50 0d 00 00 31 d2 4c 89 d7 44
RSP: 0018:ffffc9000584f8d0 EFLAGS: 00000002
RAX: ffff88803ac92080 RBX: 1ffff92000b09f4a RCX: 1ffff110074c19bb
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff88803a60cdd8
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: ffff88803a60cdd8 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fafbef78038 CR3: 000000007e039000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire kernel/locking/lockdep.c:5761 [inline]
lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5726
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
_raw_spin_lock_bh+0x33/0x40 kernel/locking/spinlock.c:178
spin_lock_bh include/linux/spinlock.h:356 [inline]
batadv_nc_purge_paths+0xd3/0x3c0 net/batman-adv/network-coding.c:442
batadv_nc_worker+0x986/0x10f0 net/batman-adv/network-coding.c:720
process_one_work+0xaa2/0x16f0 kernel/workqueue.c:2597
worker_thread+0x687/0x1110 kernel/workqueue.c:2748
kthread+0x33a/0x430 kernel/kthread.c:389
ret_from_fork+0x2c/0x70 arch/x86/kernel/process.c:145
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:296
RIP: 0000:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000