INFO: task syz-executor.3:10235 blocked for more than 143 seconds.
Not tainted 6.3.0-rc2-syzkaller-00050-g9c1bec9c0b08 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:29296 pid:10235 ppid:24170 flags:0x00000004
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
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6757
rwsem_down_write_slowpath+0x3e2/0x1220 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x1d2/0x200 kernel/locking/rwsem.c:1574
inode_lock include/linux/fs.h:758 [inline]
open_last_lookups fs/namei.c:3481 [inline]
path_openat+0x90f/0x2750 fs/namei.c:3712
do_filp_open+0x1ba/0x410 fs/namei.c:3742
do_sys_openat2+0x16d/0x4c0 fs/open.c:1348
do_sys_open fs/open.c:1364 [inline]
__do_sys_creat fs/open.c:1440 [inline]
__se_sys_creat fs/open.c:1434 [inline]
__x64_sys_creat+0xcd/0x120 fs/open.c:1434
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: 0033:0x7f6b9e68c0f9
RSP: 002b:00007f6b9f313168 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007f6b9e7ac050 RCX: 00007f6b9e68c0f9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000040
RBP: 00007f6b9e6e7b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffcf03aa2f R14: 00007f6b9f313300 R15: 0000000000022000
Showing all locks held in the system:
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
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
2 locks held by getty/4753:
#0: ffff88802c4f4098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
4 locks held by syz-executor.3/10203:
2 locks held by syz-executor.3/10235:
#0: ffff8880b2af6460 (sb_writers#14){.+.+}-{0:0}, at: open_last_lookups fs/namei.c:3473 [inline]
#0: ffff8880b2af6460 (sb_writers#14){.+.+}-{0:0}, at: path_openat+0x2716/0x2750 fs/namei.c:3712
#1: ffff88802f26af80 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock include/linux/fs.h:758 [inline]
#1: ffff88802f26af80 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: open_last_lookups fs/namei.c:3481 [inline]
#1: ffff88802f26af80 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: path_openat+0x90f/0x2750 fs/namei.c:3712
2 locks held by syz-executor.2/15209:
2 locks held by syz-executor.5/15212:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.3.0-rc2-syzkaller-00050-g9c1bec9c0b08 #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: 15178 Comm: syz-executor.4 Not tainted 6.3.0-rc2-syzkaller-00050-g9c1bec9c0b08 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
RIP: 0010:lookup_chain_cache kernel/locking/lockdep.c:3726 [inline]
RIP: 0010:lookup_chain_cache_add kernel/locking/lockdep.c:3745 [inline]
RIP: 0010:validate_chain kernel/locking/lockdep.c:3800 [inline]
RIP: 0010:__lock_acquire+0x1949/0x5d40 kernel/locking/lockdep.c:5056
Code: db 74 58 48 83 eb 08 74 52 48 bd 00 00 00 00 00 fc ff df eb 06 48 83 eb 08 74 40 48 8d 7b 18 48 89 f8 48 c1 e8 03 80 3c 28 00 <0f> 85 9a 3b 00 00 48 8b 43 18 49 39 c7 0f 84 51 f3 ff ff 48 8d 7b
RSP: 0018:ffffc90015007098 EFLAGS: 00000046
RAX: 1ffffffff207350b RBX: ffffffff9039a840 RCX: ffffffff8164627c
RDX: 1ffffffff22813ff RSI: 0000000000000008 RDI: ffffffff9039a858
RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff914d9b8f
R10: fffffbfff229b371 R11: 0000000000000000 R12: ffff888083bb2778
R13: ffff888083bb1d40 R14: 0000000000000001 R15: 381b898d1068a33d
FS: 00007f9121510700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f212bbf7d38 CR3: 0000000030202000 CR4: 0000000000350ef0
Call Trace:
lock_acquire kernel/locking/lockdep.c:5669 [inline]
lock_acquire+0x1af/0x520 kernel/locking/lockdep.c:5634
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
spin_lock include/linux/spinlock.h:350 [inline]
preload_this_cpu_lock mm/vmalloc.c:1569 [inline]
alloc_vmap_area+0x1a7/0x1e00 mm/vmalloc.c:1611
__get_vm_area_node+0x145/0x3f0 mm/vmalloc.c:2495
__vmalloc_node_range+0x250/0x1300 mm/vmalloc.c:3141
__vmalloc_node mm/vmalloc.c:3246 [inline]
vmalloc+0x6b/0x80 mm/vmalloc.c:3279
netlink_alloc_large_skb net/netlink/af_netlink.c:1216 [inline]
netlink_sendmsg+0x69e/0xe30 net/netlink/af_netlink.c:1917
sock_sendmsg_nosec net/socket.c:724 [inline]
sock_sendmsg+0xde/0x190 net/socket.c:747
sock_no_sendpage+0x10c/0x160 net/core/sock.c:3235
kernel_sendpage.part.0+0x1d5/0x700 net/socket.c:3580
kernel_sendpage net/socket.c:3577 [inline]
sock_sendpage+0xe7/0x180 net/socket.c:1080
pipe_to_sendpage+0x2b1/0x380 fs/splice.c:454
splice_from_pipe_feed fs/splice.c:508 [inline]
__splice_from_pipe+0x449/0x8a0 fs/splice.c:652
splice_from_pipe fs/splice.c:687 [inline]
generic_splice_sendpage+0xd8/0x140 fs/splice.c:835
do_splice_from fs/splice.c:856 [inline]
direct_splice_actor+0x114/0x180 fs/splice.c:1022
splice_direct_to_actor+0x335/0x8a0 fs/splice.c:977
do_splice_direct+0x1ab/0x280 fs/splice.c:1065
do_sendfile+0xb19/0x12c0 fs/read_write.c:1255
__do_sys_sendfile64 fs/read_write.c:1323 [inline]
__se_sys_sendfile64 fs/read_write.c:1309 [inline]
__x64_sys_sendfile64+0x1d0/0x210 fs/read_write.c:1309
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: 0033:0x7f912088c0f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9121510168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f91209abf80 RCX: 00007f912088c0f9
RDX: 0000000000000000 RSI: 000000000000000a RDI: 000000000000000b
RBP: 00007f91208e7b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000100000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe6ac6e77f R14: 00007f9121510300 R15: 0000000000022000