INFO: task syz-executor.2:18330 blocked for more than 146 seconds.
Not tainted 6.2.0-rc8-syzkaller-00098-gec35307e18ba #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:27864 pid:18330 ppid:5099 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0xbdd/0x54f0 kernel/sched/core.c:6606
schedule+0xde/0x1b0 kernel/sched/core.c:6682
request_wait_answer+0x46d/0x850 fs/fuse/dev.c:407
__fuse_request_send fs/fuse/dev.c:426 [inline]
fuse_simple_request+0x711/0xe80 fs/fuse/dev.c:511
fuse_flush+0x4cc/0x6b0 fs/fuse/file.c:521
filp_close+0xb8/0x160 fs/open.c:1420
close_fd+0x7a/0xa0 fs/file.c:664
__do_sys_close fs/open.c:1439 [inline]
__se_sys_close fs/open.c:1437 [inline]
__x64_sys_close+0x33/0xa0 fs/open.c:1437
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: 0033:0x7f9d3ac3dfab
RSP: 002b:00007ffdfb09ab30 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00007f9d3ac3dfab
RDX: 0000001b31820000 RSI: 00007f9d3a400000 RDI: 0000000000000005
RBP: 00007f9d3adad980 R08: 0000000000000000 R09: 000000002144fcba
R10: 00007ffdfb17d090 R11: 0000000000000293 R12: 00000000002cd51a
R13: 00007ffdfb09ac30 R14: 00007f9d3adac1f0 R15: 0000000000000032
INFO: task syz-executor.2:18341 blocked for more than 146 seconds.
Not tainted 6.2.0-rc8-syzkaller-00098-gec35307e18ba #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:27768 pid:18341 ppid:5099 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0xbdd/0x54f0 kernel/sched/core.c:6606
schedule+0xde/0x1b0 kernel/sched/core.c:6682
request_wait_answer+0x46d/0x850 fs/fuse/dev.c:407
__fuse_request_send fs/fuse/dev.c:426 [inline]
fuse_simple_request+0x711/0xe80 fs/fuse/dev.c:511
fuse_flush+0x4cc/0x6b0 fs/fuse/file.c:521
filp_close+0xb8/0x160 fs/open.c:1420
close_files fs/file.c:432 [inline]
put_files_struct fs/file.c:447 [inline]
put_files_struct+0x1d4/0x350 fs/file.c:444
exit_files+0x82/0xb0 fs/file.c:464
copy_process+0x323f/0x7530 kernel/fork.c:2543
kernel_clone+0xeb/0x9f0 kernel/fork.c:2681
__do_sys_clone3+0x1cd/0x2e0 kernel/fork.c:2980
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: 0033:0x7f9d3ac8c0f9
RSP: 002b:00007f9d3b986038 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3
RAX: ffffffffffffffda RBX: 00007f9d3adac120 RCX: 00007f9d3ac8c0f9
RDX: 0000000000000000 RSI: 0000000000000058 RDI: 00007f9d3b986050
RBP: 00007f9d3ace7ae9 R08: 0000000000000000 R09: 0000000000000058
R10: 00007f9d3b986050 R11: 0000000000000246 R12: 0000000000000058
R13: 00007ffdfb09aacf R14: 00007f9d3b986300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/11:
#0: ffffffff8c78e790 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/12:
#0: ffffffff8c78e490 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/27:
#0: ffffffff8c78f2e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x57/0x264 kernel/locking/lockdep.c:6494
2 locks held by getty/4738:
#0: ffff88814b150098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc900020582f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177
2 locks held by kworker/u4:15/5398:
3 locks held by kworker/1:9/11496:
#0: ffff888012469d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888012469d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888012469d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888012469d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff888012469d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff888012469d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260
#1: ffffc9000b677da8 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264
#2: ffffffff8e0d6d68 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xf/0x70 net/core/link_watch.c:277
2 locks held by syz-executor.5/18776:
5 locks held by syz-executor.3/18782:
1 lock held by syz-executor.4/18787:
1 lock held by syz-executor.4/18792:
#0: ffffffff8e0d6d68 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:75 [inline]
#0: ffffffff8e0d6d68 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x3e9/0xca0 net/core/rtnetlink.c:6138
1 lock held by syz-executor.1/18780:
#0: ffff888035efed18 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:136 [inline]
#0: ffff888035efed18 (&mm->mmap_lock){++++}-{3:3}, at: do_user_addr_fault+0x276/0x1210 arch/x86/mm/fault.c:1369
2 locks held by syz-executor.0/18785:
1 lock held by syz-executor.2/18793:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 6.2.0-rc8-syzkaller-00098-gec35307e18ba #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x24/0x18a lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x333/0x3c0 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+0xc75/0xfc0 kernel/hung_task.c:377
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: 18773 Comm: syz-executor.5 Not tainted 6.2.0-rc8-syzkaller-00098-gec35307e18ba #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
RIP: 0033:0x7f184ac3921a
Code: 49 89 dd 48 39 cf 72 2f 48 83 e8 08 48 39 d1 73 14 0f 1f 80 00 00 00 00 48 8b 50 f8 48 83 e8 08 48 39 ca 77 f3 48 39 c3 73 3e <48> 89 13 48 8b 50 f8 48 89 38 49 8b 0e 48 8b 3e 48 83 c3 08 48 83
RSP: 002b:00007ffd505e9900 EFLAGS: 00000293
RAX: 00007f184a4c95d8 RBX: 00007f184a4c9530 RCX: ffffffff84060271
RDX: ffffffff84060271 RSI: 00007f184a4c9538 RDI: ffffffff84060271
RBP: 00007f184a4c9360 R08: 00007f184a4c9830 R09: 000000003e09a32f
R10: 0000000000000000 R11: 0000000000000000 R12: 00007f184a4c9358
R13: 00007f184a4c9530 R14: 00007f184a4c9350 R15: 0000000000000012
FS: 0000555557401400 GS: 0000000000000000