watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz-executor.1:18042]
Modules linked in:
CPU: 0 PID: 18042 Comm: syz-executor.1 Tainted: G W 5.10.186-syzkaller-01315-g59b65efafe20 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
RIP: 0010:native_restore_fl arch/x86/include/asm/irqflags.h:41 [inline]
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:84 [inline]
RIP: 0010:kvm_wait+0xfc/0x150 arch/x86/kernel/kvm.c:926
Code: 38 f0 75 26 41 f7 c7 00 02 00 00 75 0f 0f 1f 44 00 00 0f 00 2d 05 48 d5 03 f4 eb 0e 0f 1f 44 00 00 0f 00 2d f6 47 d5 03 fb f4 <4c> 89 7c 24 18 ff 74 24 18 9d 48 c7 44 24 20 0e 36 e0 45 49 c7 04
RSP: 0018:ffffc900064aeb00 EFLAGS: 00000246
RAX: 0000000000000003 RBX: 1ffff92000c95d64 RCX: ffffffff8150a3c4
RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffffc900064aeb40
RBP: ffffc900064aebb0 R08: dffffc0000000000 R09: ffffed10262e2e96
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: ffff8881317174ac R14: 0000000000000003 R15: 0000000000000246
FS: 00007f11b1fd4700(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc28bf2a6be CR3: 0000000114cfa000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
pv_wait arch/x86/include/asm/paravirt.h:564 [inline]
pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline]
__pv_queued_spin_lock_slowpath+0x72f/0xc70 kernel/locking/qspinlock.c:508
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:554 [inline]
queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
do_raw_spin_lock include/linux/spinlock.h:183 [inline]
__raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline]
_raw_spin_lock_bh+0x139/0x1b0 kernel/locking/spinlock.c:175
spin_lock_bh include/linux/spinlock.h:359 [inline]
get_dist_table+0x207/0x2e0 net/sched/sch_netem.c:798
netem_change+0x9d7/0x1fb0 net/sched/sch_netem.c:995
netem_init+0x5b/0xb0 net/sched/sch_netem.c:1075
qdisc_create+0x879/0x12d0 net/sched/sch_api.c:1264
tc_modify_qdisc+0x8a4/0x13f0
rtnetlink_rcv_msg+0x955/0xc50 net/core/rtnetlink.c:5571
netlink_rcv_skb+0x1cf/0x410 net/netlink/af_netlink.c:2496
rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:5589
netlink_unicast_kernel net/netlink/af_netlink.c:1322 [inline]
netlink_unicast+0x8df/0xac0 net/netlink/af_netlink.c:1348
netlink_sendmsg+0xa46/0xd00 net/netlink/af_netlink.c:1915
sock_sendmsg_nosec net/socket.c:652 [inline]
sock_sendmsg net/socket.c:672 [inline]
____sys_sendmsg+0x59e/0x8f0 net/socket.c:2357
___sys_sendmsg+0x252/0x2e0 net/socket.c:2411
__sys_sendmsg net/socket.c:2440 [inline]
__do_sys_sendmsg net/socket.c:2449 [inline]
__se_sys_sendmsg+0x1b1/0x280 net/socket.c:2447
__x64_sys_sendmsg+0x7b/0x90 net/socket.c:2447
do_syscall_64+0x34/0x70
entry_SYSCALL_64_after_hwframe+0x61/0xc6
RIP: 0033:0x7f11b3261389
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:00007f11b1fd4168 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f11b3380f80 RCX: 00007f11b3261389
RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000005
RBP: 00007f11b32ac493 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdcbd1f36f R14: 00007f11b1fd4300 R15: 0000000000022000
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 9 Comm: kworker/u4:1 Tainted: G W 5.10.186-syzkaller-01315-g59b65efafe20 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:229 [inline]
RIP: 0010:smp_call_function_single+0x278/0x510 kernel/smp.c:517
Code: 0f 85 18 02 00 00 44 8b 6c 24 48 44 89 ee 83 e6 01 31 ff e8 ca e7 0a 00 41 83 e5 01 75 0a e8 0f e4 0a 00 e9 eb 00 00 00 f3 90 <42> 0f b6 04 23 84 c0 75 15 f7 44 24 48 01 00 00 00 0f 84 cd 00 00
RSP: 0018:ffffc90000097720 EFLAGS: 00000293
RAX: ffffffff815fa3f4 RBX: 1ffff92000012eed RCX: ffff8881002493c0
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90000097810 R08: ffffffff815fa3c6 R09: ffffed103ee0aec9
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000001 R14: ffffc90000097768 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0013d3000 CR3: 000000000660f000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
smp_call_function_many_cond+0x94e/0xa30 kernel/smp.c:653
smp_call_function_many kernel/smp.c:716 [inline]
smp_call_function kernel/smp.c:738 [inline]
on_each_cpu+0xa8/0x1a0 kernel/smp.c:837
text_poke_sync arch/x86/kernel/alternative.c:1300 [inline]
text_poke_bp_batch+0x1d4/0x600 arch/x86/kernel/alternative.c:1491
text_poke_flush arch/x86/kernel/alternative.c:1659 [inline]
text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:1666
arch_jump_label_transform_apply+0x15/0x30 arch/x86/kernel/jump_label.c:126
__jump_label_update+0x36a/0x380 kernel/jump_label.c:459
jump_label_update+0x379/0x400 kernel/jump_label.c:825
static_key_disable_cpuslocked+0xcd/0x1b0 kernel/jump_label.c:207
static_key_disable+0x1a/0x30 kernel/jump_label.c:215
toggle_allocation_gate+0x3b4/0x450 mm/kfence/core.c:638
process_one_work+0x6dc/0xbd0 kernel/workqueue.c:2298
worker_thread+0xaea/0x1510 kernel/workqueue.c:2444
kthread+0x34b/0x3d0 kernel/kthread.c:313
ret_from_fork+0x1f/0x30 :299