INFO: task syz-executor.5:15696 blocked for more than 143 seconds.
Not tainted 6.1.0-rc5-syzkaller-00320-gb6e7fdfd6f6a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:26120 pid:15696 ppid:3667 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5191 [inline]
__schedule+0x8fc/0xda0 kernel/sched/core.c:6503
schedule+0xcb/0x190 kernel/sched/core.c:6579
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6638
__mutex_lock_common+0xecf/0x26c0 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799
__do_sys_io_uring_register io_uring/io_uring.c:4067 [inline]
__se_sys_io_uring_register+0x192/0x1100 io_uring/io_uring.c:4048
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f3d1d68b639
RSP: 002b:00007f3d1e3de168 EFLAGS: 00000246 ORIG_RAX: 00000000000001ab
RAX: ffffffffffffffda RBX: 00007f3d1d7ac050 RCX: 00007f3d1d68b639
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 0000000000000003
RBP: 00007f3d1d6e6ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcd858a27f R14: 00007f3d1e3de300 R15: 0000000000022000
INFO: task syz-executor.5:15700 blocked for more than 144 seconds.
Not tainted 6.1.0-rc5-syzkaller-00320-gb6e7fdfd6f6a #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.5 state:D stack:26936 pid:15700 ppid:3667 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5191 [inline]
__schedule+0x8fc/0xda0 kernel/sched/core.c:6503
schedule+0xcb/0x190 kernel/sched/core.c:6579
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6638
__mutex_lock_common+0xecf/0x26c0 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799
__do_sys_io_uring_register io_uring/io_uring.c:4067 [inline]
__se_sys_io_uring_register+0x192/0x1100 io_uring/io_uring.c:4048
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f3d1d68b639
RSP: 002b:00007f3d1e3bd168 EFLAGS: 00000246 ORIG_RAX: 00000000000001ab
RAX: ffffffffffffffda RBX: 00007f3d1d7ac120 RCX: 00007f3d1d68b639
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 0000000000000003
RBP: 00007f3d1d6e6ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcd858a27f R14: 00007f3d1e3bd300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8d323ff0 (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: ffffffff8d3247f0 (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: ffffffff8d323e20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
4 locks held by kworker/u4:5/2434:
#0: ffff8880b9839dd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:537
#1: ffffc9000c3cfd00 ((work_completion)(&(&bat_priv->orig_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffff8880b9828358 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x12a/0x270 kernel/time/timer.c:999
#3: ffffffff92204d48 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_activate+0x97/0x6a0 lib/debugobjects.c:658
2 locks held by getty/3311:
#0: ffff8880293ab098 (&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+0x6e8/0x1e50 drivers/tty/n_tty.c:2177
2 locks held by kworker/0:3/3335:
#0: ffff888012866538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc9000389fd00 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
6 locks held by kworker/u4:19/7295:
#0: ffff8880129c3138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
#1: ffffc9000332fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
#2: ffffffff8e471c50 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xf0/0xc50 net/core/net_namespace.c:563
#3: ffff88809295f2f8 (&devlink->lock_key#7){+.+.}-{3:3}, at: devlink_pernet_pre_exit+0x13e/0x2f0 net/core/devlink.c:12509
#4: ffffffff8e47df88 (rtnl_mutex){+.+.}-{3:3}, at: nsim_destroy+0x3a/0x140 drivers/net/netdevsim/netdev.c:381
#5: ffffffff8d3293b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:292 [inline]
#5: ffffffff8d3293b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x3a6/0x890 kernel/rcu/tree_exp.h:946
1 lock held by syz-executor.5/15694:
1 lock held by syz-executor.5/15696:
#0: ffff888078cf50a8 (&ctx->uring_lock){+.+.}-{3:3}, at: __do_sys_io_uring_register io_uring/io_uring.c:4067 [inline]
#0: ffff888078cf50a8 (&ctx->uring_lock){+.+.}-{3:3}, at: __se_sys_io_uring_register+0x192/0x1100 io_uring/io_uring.c:4048
1 lock held by syz-executor.5/15700:
#0: ffff888078cf50a8 (&ctx->uring_lock){+.+.}-{3:3}, at: __do_sys_io_uring_register io_uring/io_uring.c:4067 [inline]
#0: ffff888078cf50a8 (&ctx->uring_lock){+.+.}-{3:3}, at: __se_sys_io_uring_register+0x192/0x1100 io_uring/io_uring.c:4048
2 locks held by kworker/0:4/15734:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.1.0-rc5-syzkaller-00320-gb6e7fdfd6f6a #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+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x4e3/0x560 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x19b/0x3e0 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: 16814 Comm: sed Not tainted 6.1.0-rc5-syzkaller-00320-gb6e7fdfd6f6a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:85 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:102 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x84/0x2e0 mm/kasan/generic.c:189
Code: da 4d 89 d6 4d 29 ce 49 83 fe 10 7f 30 4d 85 f6 0f 84 8e 01 00 00 4c 89 cb 4c 29 d3 66 2e 0f 1f 84 00 00 00 00 00 41 80 39 00 <0f> 85 e7 01 00 00 49 ff c1 48 ff c3 75 ee e9 67 01 00 00 44 89 cd
RSP: 0018:ffffc9000319fa58 EFLAGS: 00000246
RAX: f204f204f1f1f101 RBX: ffffffffffffffff RCX: ffffffff81d548c9
RDX: 0000000000000001 RSI: 0000000000000028 RDI: ffffc9000319fb00
RBP: 000000000001ffff R08: dffffc0000000000 R09: fffff52000633f64
R10: fffff52000633f65 R11: 1ffff92000633f60 R12: 00000000000d20c0
R13: 1ffff92000633f5c R14: 0000000000000005 R15: 1ffff92000633f58
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fea67d5c270 CR3: 0000000039912000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
memset+0x1f/0x40 mm/kasan/shadow.c:44
__alloc_pages+0xb9/0x560 mm/page_alloc.c:5525
alloc_slab_page+0x70/0xf0 mm/slub.c:1794
allocate_slab+0x5e/0x4b0 mm/slub.c:1939
new_slab mm/slub.c:1992 [inline]
___slab_alloc+0x7f4/0xeb0 mm/slub.c:3180
__slab_alloc mm/slub.c:3279 [inline]
slab_alloc_node mm/slub.c:3364 [inline]
slab_alloc mm/slub.c:3406 [inline]
__kmem_cache_alloc_lru mm/slub.c:3413 [inline]
kmem_cache_alloc+0x24c/0x300 mm/slub.c:3422
getname_flags+0xb8/0x4e0 fs/namei.c:139
do_sys_openat2+0xd2/0x500 fs/open.c:1304
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x243/0x290 fs/open.c:1337
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fea6801a064
Code: f9 41 89 f0 41 83 e2 40 75 2c 89 f0 25 00 00 41 00 3d 00 00 41 00 74 1e 44 89 c2 4c 89 ce bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 2c c3 0f 1f 00 48 8d 44 24 08 c7 44 24 b8 10
RSP: 002b:00007ffdcdb044d8 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fea6801a064
RDX: 0000000000080000 RSI: 00007ffdcdb04550 RDI: 00000000ffffff9c
RBP: 00007ffdcdb04540 R08: 0000000000080000 R09: 00007ffdcdb04550
R10: 0000000000000000 R11: 0000000000000287 R12: 00007ffdcdb0473f
R13: 00007ffdcdb04550 R14: 00007ffdcdb0455b R15: 00007ffdcdb04750