INFO: task syz-executor.0:6443 blocked for more than 143 seconds.
Not tainted 6.1.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:23008 pid:6443 ppid:3661 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5209 [inline]
__schedule+0x8c9/0xd70 kernel/sched/core.c:6521
schedule+0xcb/0x190 kernel/sched/core.c:6597
request_wait_answer fs/fuse/dev.c:407 [inline]
__fuse_request_send fs/fuse/dev.c:426 [inline]
fuse_simple_request+0x1034/0x1870 fs/fuse/dev.c:511
fuse_send_open fs/fuse/file.c:48 [inline]
fuse_file_open+0x564/0xbd0 fs/fuse/file.c:145
fuse_do_open fs/fuse/file.c:172 [inline]
fuse_open_common+0x2f2/0x670 fs/fuse/file.c:251
do_dentry_open+0x85f/0x11b0 fs/open.c:882
do_open fs/namei.c:3557 [inline]
path_openat+0x25fc/0x2df0 fs/namei.c:3714
do_filp_open+0x264/0x4f0 fs/namei.c:3741
do_sys_openat2+0x124/0x4e0 fs/open.c:1310
do_sys_open fs/open.c:1326 [inline]
__do_sys_open fs/open.c:1334 [inline]
__se_sys_open fs/open.c:1330 [inline]
__x64_sys_open+0x221/0x270 fs/open.c:1330
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: 0033:0x7f6ea268c0d9
RSP: 002b:00007f6ea3481168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f6ea27ac050 RCX: 00007f6ea268c0d9
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000020000100
RBP: 00007f6ea26e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc389ef2cf R14: 00007f6ea3481300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d127330 (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: ffffffff8d127b30 (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: ffffffff8d127160 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
4 locks held by kworker/u4:2/33:
#0: ffff8880b9839dd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:537
#1: ffff8880b9827788 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x611/0x9a0 kernel/sched/psi.c:909
#2: ffffffff91de1ef0 (&p->sequence){+.-.}-{0:0}, at: fprop_fraction_percpu+0x78/0x240 lib/flex_proportions.c:232
#3: ffff88801f12a6c8 (&p->pi_lock){-.-.}-{2:2}, at: try_to_wake_up+0x9c/0xac0 kernel/sched/core.c:4076
2 locks held by getty/3313:
#0: ffff88814aaf1098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900031262f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x53b/0x1650 drivers/tty/n_tty.c:2177
1 lock held by syz-executor.2/3677:
2 locks held by kworker/u4:7/20030:
2 locks held by kworker/1:15/1483:
1 lock held by syz-executor.4/8070:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.1.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1b1/0x28e 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+0xcf5/0xd40 kernel/hung_task.c:377
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2987 Comm: klogd Not tainted 6.1.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:mod_node_state mm/vmstat.c:618 [inline]
RIP: 0010:mod_node_page_state+0x3c/0x150 mm/vmstat.c:666
Code: fe 48 8d 9f 40 50 00 00 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 c7 e4 1b 00 48 8b 2b <45> 89 fd 41 83 ff 2c 0f 83 b6 00 00 00 41 8d 47 fb 83 f8 01 77 11
RSP: 0018:ffffc9000314f650 EFLAGS: 00000246
RAX: 1ffff11027fffe08 RBX: ffff88813ffff040 RCX: dffffc0000000000
RDX: ffffffffffff8000 RSI: 0000000000000006 RDI: ffff88813fffa000
RBP: 0000000000040940 R08: dffffc0000000000 R09: ffffed1002508139
R10: ffffed1002508139 R11: 1ffff11002508138 R12: ffffffffffff8000
R13: ffff88813fffa000 R14: ffff88813fffa000 R15: 0000000000000006
FS: 00007fcdd39df800(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd5da9fe000 CR3: 000000007efce000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
unaccount_slab mm/slab.h:647 [inline]
__free_slab+0x144/0x320 mm/slub.c:2015
free_slab mm/slub.c:2031 [inline]
discard_slab mm/slub.c:2037 [inline]
__unfreeze_partials+0x1ab/0x200 mm/slub.c:2586
put_cpu_partial+0x106/0x170 mm/slub.c:2662
qlist_free_all+0x2b/0x70 mm/kasan/quarantine.c:187
kasan_quarantine_reduce+0x169/0x180 mm/kasan/quarantine.c:294
__kasan_slab_alloc+0x1f/0x70 mm/kasan/common.c:302
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slab.h:737 [inline]
slab_alloc_node mm/slub.c:3398 [inline]
kmem_cache_alloc_node+0x1ca/0x340 mm/slub.c:3443
__alloc_skb+0xcf/0x2b0 net/core/skbuff.c:497
alloc_skb include/linux/skbuff.h:1267 [inline]
alloc_skb_with_frags+0xb4/0x780 net/core/skbuff.c:6126
sock_alloc_send_pskb+0x938/0xa70 net/core/sock.c:2719
unix_dgram_sendmsg+0x5ab/0x2010 net/unix/af_unix.c:1943
sock_sendmsg_nosec net/socket.c:714 [inline]
sock_sendmsg net/socket.c:734 [inline]
__sys_sendto+0x46e/0x5f0 net/socket.c:2117
__do_sys_sendto net/socket.c:2129 [inline]
__se_sys_sendto net/socket.c:2125 [inline]
__x64_sys_sendto+0xda/0xf0 net/socket.c:2125
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: 0033:0x7fcdd3b7b0ac
Code: 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 19 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 64 c3 0f 1f 00 55 48 83 ec 20 48 89 54 24 10
RSP: 002b:00007ffc42413b38 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcdd3b7b0ac
RDX: 000000000000004a RSI: 0000556d64522860 RDI: 0000000000000003
RBP: 0000556d64519910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000014
R13: 0000000000000001 R14: 00007fcdd3cf677d R15: 00007ffc42413c48