INFO: task syz-executor.4:12151 blocked for more than 143 seconds.
Not tainted 6.3.0-rc2-syzkaller-00235-g8d3c682a5e3d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:26480 pid:12151 ppid:5091 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0xc91/0x5770 kernel/sched/core.c:6622
schedule+0xde/0x1a0 kernel/sched/core.c:6698
__wait_on_freeing_inode+0xf2/0x140 fs/inode.c:2197
find_inode_fast+0x14e/0x220 fs/inode.c:951
iget_locked+0xa8/0x700 fs/inode.c:1274
__ext4_iget+0x3b2/0x4430 fs/ext4/inode.c:4866
ext4_xattr_inode_cache_find fs/ext4/xattr.c:1559 [inline]
ext4_xattr_inode_lookup_create fs/ext4/xattr.c:1595 [inline]
ext4_xattr_set_entry+0x1e3e/0x39e0 fs/ext4/xattr.c:1737
ext4_xattr_block_set+0xcb7/0x3030 fs/ext4/xattr.c:2043
ext4_xattr_set_handle+0xd8a/0x1510 fs/ext4/xattr.c:2458
ext4_xattr_set+0x144/0x360 fs/ext4/xattr.c:2560
__vfs_setxattr+0x173/0x1e0 fs/xattr.c:203
__vfs_setxattr_noperm+0x129/0x5f0 fs/xattr.c:237
__vfs_setxattr_locked+0x1d3/0x260 fs/xattr.c:298
vfs_setxattr+0x143/0x340 fs/xattr.c:324
do_setxattr+0x147/0x190 fs/xattr.c:609
setxattr+0x146/0x160 fs/xattr.c:632
path_setxattr+0x197/0x1c0 fs/xattr.c:651
__do_sys_setxattr fs/xattr.c:667 [inline]
__se_sys_setxattr fs/xattr.c:663 [inline]
__x64_sys_setxattr+0xc4/0x160 fs/xattr.c:663
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f1f25c8c0f9
RSP: 002b:00007f1f1cc1d168 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007f1f25dac050 RCX: 00007f1f25c8c0f9
RDX: 00000000200005c0 RSI: 0000000020000180 RDI: 00000000200000c0
RBP: 00007f1f25ce7b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000002000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcdd36eacf R14: 00007f1f1cc1d300 R15: 0000000000022000
INFO: task syz-executor.4:12152 blocked for more than 143 seconds.
Not tainted 6.3.0-rc2-syzkaller-00235-g8d3c682a5e3d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:26440 pid:12152 ppid:5091 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5304 [inline]
__schedule+0xc91/0x5770 kernel/sched/core.c:6622
schedule+0xde/0x1a0 kernel/sched/core.c:6698
mb_cache_entry_wait_unused+0x16f/0x1f0 fs/mbcache.c:148
ext4_evict_ea_inode+0x195/0x2f0 fs/ext4/xattr.c:496
ext4_evict_inode+0xcb2/0x1ca0 fs/ext4/inode.c:181
evict+0x2ed/0x6b0 fs/inode.c:665
iput_final fs/inode.c:1748 [inline]
iput.part.0+0x50a/0x740 fs/inode.c:1774
iput+0x5c/0x80 fs/inode.c:1764
ext4_xattr_set_entry+0x4ff/0x39e0 fs/ext4/xattr.c:1874
ext4_xattr_block_set+0x618/0x3030 fs/ext4/xattr.c:1974
ext4_xattr_set_handle+0xd8a/0x1510 fs/ext4/xattr.c:2458
ext4_xattr_set+0x144/0x360 fs/ext4/xattr.c:2560
__vfs_setxattr+0x173/0x1e0 fs/xattr.c:203
__vfs_setxattr_noperm+0x129/0x5f0 fs/xattr.c:237
__vfs_setxattr_locked+0x1d3/0x260 fs/xattr.c:298
vfs_setxattr+0x143/0x340 fs/xattr.c:324
do_setxattr+0x147/0x190 fs/xattr.c:609
setxattr+0x146/0x160 fs/xattr.c:632
path_setxattr+0x197/0x1c0 fs/xattr.c:651
__do_sys_setxattr fs/xattr.c:667 [inline]
__se_sys_setxattr fs/xattr.c:663 [inline]
__x64_sys_setxattr+0xc4/0x160 fs/xattr.c:663
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f1f25c8c0f9
RSP: 002b:00007f1f1cbfc168 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007f1f25dac120 RCX: 00007f1f25c8c0f9
RDX: 0000000000000000 RSI: 0000000020000200 RDI: 00000000200001c0
RBP: 00007f1f25ce7b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcdd36eacf R14: 00007f1f1cbfc300 R15: 0000000000022000
Showing all locks held in the system:
3 locks held by kworker/0:0/7:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0 kernel/workqueue.c:2361
#1: ffffc900000c7da8 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0 kernel/workqueue.c:2365
#2:
ffffffff8c7a09b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
ffffffff8c7a09b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3e8/0x770 kernel/rcu/tree_exp.h:989
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8c794b70 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8c794870 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510
2 locks held by kworker/0:1/14:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0 kernel/workqueue.c:2361
#1: ffffc90000137da8 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0 kernel/workqueue.c:2365
2 locks held by kworker/1:1/26:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0 kernel/workqueue.c:2361
#1: ffffc90000a1fda8 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0 kernel/workqueue.c:2365
1 lock held by khungtaskd/28:
#0: ffffffff8c7956c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6495
3 locks held by kworker/0:2/896:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0 kernel/workqueue.c:2361
#1: ffffc9000500fda8 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0 kernel/workqueue.c:2365
#2: ffffffff8c7a09b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#2: ffffffff8c7a09b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3e8/0x770 kernel/rcu/tree_exp.h:989
2 locks held by getty/4748:
#0: ffff88802c43c098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc900015802f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
2 locks held by kworker/0:4/5138:
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0 kernel/workqueue.c:2361
#1: ffffc900042afda8 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0 kernel/workqueue.c:2365
2 locks held by kworker/1:4/5149:
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline]
#0: ffff888012470d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0 kernel/workqueue.c:2361
#1: ffffc900043efda8 ((work_completion)(&pwq->unbound_release_work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0 kernel/workqueue.c:2365
3 locks held by syz-executor.4/12151:
#0: ffff888020cbc460 (sb_writers#4){.+.+}-{0:0}, at: path_setxattr+0xb2/0x1c0 fs/xattr.c:649
#1: ffff888073e47258 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
#1: ffff888073e47258 (&sb->s_type->i_mutex_key#8){++++}-{3:3}, at: vfs_setxattr+0x120/0x340 fs/xattr.c:323
#2: ffff888073e46f20 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
#2: ffff888073e46f20 (&ei->xattr_sem){++++}-{3:3}, at: ext4_xattr_set_handle+0x160/0x1510 fs/ext4/xattr.c:2373
3 locks held by syz-executor.4/12152:
#0: ffff888020cbc460 (sb_writers#4){.+.+}-{0:0}, at: path_setxattr+0xb2/0x1c0 fs/xattr.c:649
#1: ffff88806b49ac20 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
#1: ffff88806b49ac20 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: vfs_setxattr+0x120/0x340 fs/xattr.c:323
#2: ffff88806b49a8e8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
#2: ffff88806b49a8e8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_xattr_set_handle+0x160/0x1510 fs/ext4/xattr.c:2373
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.3.0-rc2-syzkaller-00235-g8d3c682a5e3d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106
nmi_cpu_backtrace+0x29c/0x350 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x2a4/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xe16/0x1090 kernel/hung_task.c:379
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 7 Comm: kworker/0:0 Not tainted 6.3.0-rc2-syzkaller-00235-g8d3c682a5e3d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:kmalloc_reserve+0x6/0x270 net/core/skbuff.c:511
Code: 0e 8e e8 ad 9e 40 fc e9 c8 fe ff ff e8 d3 a7 d5 f9 e9 49 ff ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 41 57 41 56 41 55 <41> 89 d5 41 54 41 89 f4 55 48 89 cd 53 48 89 fb 48 83 ec 08 e8 51
RSP: 0018:ffffc900000c7b80 EFLAGS: 00000293
RAX: ffffc900000c7c28 RBX: 1ffff92000018f75 RCX: ffffc900000c7bd8
RDX: 00000000ffffffff RSI: 0000000000000820 RDI: ffffc900000c7be8
RBP: 0000000000000000 R08: ffffc900000c7b58 R09: ffff88806cd8d3c0
R10: 0000000000000001 R11: 0000000000094001 R12: ffff88806cd8d3c0
R13: 00000000ffffffff R14: 0000000000000820 R15: ffff8880173bd000
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8eca9821b8 CR3: 00000000761e2000 CR4: 0000000000350ef0
Call Trace:
__alloc_skb+0x129/0x330 net/core/skbuff.c:606
alloc_skb include/linux/skbuff.h:1277 [inline]
nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:751 [inline]
nsim_dev_trap_report drivers/net/netdevsim/dev.c:808 [inline]
nsim_dev_trap_report_work+0x2b1/0xc80 drivers/net/netdevsim/dev.c:853
process_one_work+0x991/0x15c0 kernel/workqueue.c:2390
worker_thread+0x669/0x1090 kernel/workqueue.c:2537
kthread+0x2e8/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308