INFO: task syz-executor.2:30453 blocked for more than 146 seconds.
Not tainted 6.4.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:21472 pid:30453 ppid:5027 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
mb_cache_entry_wait_unused+0x166/0x250 fs/mbcache.c:148
ext4_evict_ea_inode+0x14a/0x2f0 fs/ext4/xattr.c:480
ext4_evict_inode+0x184/0xf20 fs/ext4/inode.c:180
evict+0x2a4/0x620 fs/inode.c:665
ext4_xattr_set_entry+0x13d4/0x3e80 fs/ext4/xattr.c:1856
ext4_xattr_block_set+0x69c/0x3630 fs/ext4/xattr.c:1956
ext4_xattr_set_handle+0xcd4/0x15c0 fs/ext4/xattr.c:2442
ext4_xattr_set+0x241/0x3d0 fs/ext4/xattr.c:2544
__vfs_setxattr+0x460/0x4a0 fs/xattr.c:201
__vfs_setxattr_noperm+0x12e/0x5e0 fs/xattr.c:235
vfs_setxattr+0x221/0x420 fs/xattr.c:322
do_setxattr fs/xattr.c:630 [inline]
setxattr+0x25d/0x2f0 fs/xattr.c:653
path_setxattr+0x1c0/0x2a0 fs/xattr.c:672
__do_sys_setxattr fs/xattr.c:688 [inline]
__se_sys_setxattr fs/xattr.c:684 [inline]
__x64_sys_setxattr+0xbb/0xd0 fs/xattr.c:684
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd838a8c389
RSP: 002b:00007fd8397fa168 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007fd838babf80 RCX: 00007fd838a8c389
RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000020000140
RBP: 00007fd838ad7493 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffebcdfd58f R14: 00007fd8397fa300 R15: 0000000000022000
INFO: task syz-executor.2:30479 blocked for more than 148 seconds.
Not tainted 6.4.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:24512 pid:30479 ppid:5027 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
__wait_on_freeing_inode fs/inode.c:2196 [inline]
find_inode_fast+0x319/0x450 fs/inode.c:950
iget_locked+0xcb/0x830 fs/inode.c:1273
__ext4_iget+0x261/0x3f30 fs/ext4/inode.c:4696
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+0x219f/0x3e80 fs/ext4/xattr.c:1719
ext4_xattr_block_set+0xb12/0x3630 fs/ext4/xattr.c:2025
ext4_xattr_set_handle+0xcd4/0x15c0 fs/ext4/xattr.c:2442
ext4_xattr_set+0x241/0x3d0 fs/ext4/xattr.c:2544
__vfs_setxattr+0x460/0x4a0 fs/xattr.c:201
__vfs_setxattr_noperm+0x12e/0x5e0 fs/xattr.c:235
vfs_setxattr+0x221/0x420 fs/xattr.c:322
do_setxattr fs/xattr.c:630 [inline]
setxattr+0x25d/0x2f0 fs/xattr.c:653
path_setxattr+0x1c0/0x2a0 fs/xattr.c:672
__do_sys_setxattr fs/xattr.c:688 [inline]
__se_sys_setxattr fs/xattr.c:684 [inline]
__x64_sys_setxattr+0xbb/0xd0 fs/xattr.c:684
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd838a8c389
RSP: 002b:00007fd8397d9168 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007fd838bac050 RCX: 00007fd838a8c389
RDX: 00000000200005c0 RSI: 0000000020000180 RDI: 00000000200000c0
RBP: 00007fd838ad7493 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000002000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffebcdfd58f R14: 00007fd8397d9300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/13:
#0: ffffffff8cf276f0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518
1 lock held by rcu_tasks_trace/14:
#0: ffffffff8cf27ab0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x29/0xd20 kernel/rcu/tasks.h:518
1 lock held by khungtaskd/28:
#0: ffffffff8cf27520 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/4745:
#0: ffff888029202098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900015902f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2176
1 lock held by syz-executor.0/5016:
#0: ffffffff8cf2cbf8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
#0: ffffffff8cf2cbf8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x46c/0x890 kernel/rcu/tree_exp.h:992
2 locks held by kworker/1:0/14310:
#0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x77e/0x10e0 kernel/workqueue.c:2381
#1: ffffc9000ae7fd20 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7c8/0x10e0 kernel/workqueue.c:2383
5 locks held by kworker/u4:2/18027:
1 lock held by syz-executor.4/28635:
#0: ffffffff8cf2cbf8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:293 [inline]
#0: ffffffff8cf2cbf8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a3/0x890 kernel/rcu/tree_exp.h:992
5 locks held by syz-executor.1/28882:
4 locks held by kworker/u4:5/29699:
3 locks held by syz-executor.2/30453:
#0: ffff88802a940460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:394
#1: ffff8880796ac000 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline]
#1: ffff8880796ac000 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: vfs_setxattr+0x1e1/0x420 fs/xattr.c:321
#2: ffff8880796abcc8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
#2: ffff8880796abcc8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_xattr_set_handle+0x274/0x15c0 fs/ext4/xattr.c:2357
3 locks held by syz-executor.2/30479:
#0: ffff88802a940460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:394
#1: ffff8880588fac00 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:775 [inline]
#1: ffff8880588fac00 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: vfs_setxattr+0x1e1/0x420 fs/xattr.c:321
#2: ffff8880588fa8c8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
#2: ffff8880588fa8c8 (&ei->xattr_sem){++++}-{3:3}, at: ext4_xattr_set_handle+0x274/0x15c0 fs/ext4/xattr.c:2357
1 lock held by syz-executor.5/32119:
#0: ffff888021085cb8 (&nft_net->commit_mutex){+.+.}-{3:3}, at: nf_tables_valid_genid+0x2b/0xb0 net/netfilter/nf_tables_api.c:10075
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.4.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x187/0x300 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+0xec2/0xf00 kernel/hung_task.c:379
kthread+0x2b8/0x350 kernel/kthread.c:379
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: 18027 Comm: kworker/u4:2 Not tainted 6.4.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:get_current arch/x86/include/asm/current.h:41 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:235 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x8/0x90 kernel/kcov.c:304
Code: 00 00 00 48 89 44 0a 10 48 89 74 0a 18 4c 89 44 0a 20 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 f3 0f 1e fa 4c 8b 04 24 <65> 48 8b 15 d0 2c 78 7e 65 8b 05 d1 2c 78 7e a9 00 01 ff 00 74 10
RSP: 0018:ffffc9000ca3f7b8 EFLAGS: 00000293
RAX: ffffffff818087d1 RBX: 0000000000000001 RCX: ffff8880505c8000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffc9000ca3f9c0 R08: ffffffff8180709b R09: fffffbfff1cabbc6
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000002
R13: 0000000000000001 R14: dffffc0000000000 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0a80db9718 CR3: 000000000cd30000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
smp_call_function_many_cond+0x115b/0x1f60 kernel/smp.c:809
on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:996
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:1770 [inline]
text_poke_bp_batch+0x2bf/0x950 arch/x86/kernel/alternative.c:1970
text_poke_flush arch/x86/kernel/alternative.c:2161 [inline]
text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:2168
arch_jump_label_transform_apply+0x17/0x30 arch/x86/kernel/jump_label.c:146
static_key_enable_cpuslocked+0x132/0x250 kernel/jump_label.c:205
static_key_enable+0x1a/0x20 kernel/jump_label.c:218
toggle_allocation_gate+0xb5/0x250 mm/kfence/core.c:831
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2408
worker_thread+0xa63/0x1210 kernel/workqueue.c:2555
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308