rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-...!: (39 ticks this GP) idle=c85/1/0x4000000000000000 softirq=186855/186855 fqs=20
(detected by 1, t=10502 jiffies, g=322669, q=141)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 7219 Comm: syz-executor.1 Not tainted 5.16.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:check_preemption_disabled+0x3/0x1c0 lib/smp_processor_id.c:13
Code: cc cc cc cc cc cc cc 0f 1f 44 00 00 48 c7 c7 20 49 d5 8a 48 c7 c6 60 49 d5 8a eb 0b 66 2e 0f 1f 84 00 00 00 00 00 90 55 41 57 <41> 56 41 55 41 54 53 48 83 ec 10 49 89 f6 49 89 ff 65 48 8b 04 25
RSP: 0018:ffffc90000007b28 EFLAGS: 00000046
RAX: 1ffff11002639400 RBX: 1ffff92000000f7e RCX: 0000000080010001
RDX: 0000000000000000 RSI: ffffffff8a6f1100 RDI: ffffffff8ad549a0
RBP: ffffc90000007c70 R08: dffffc0000000000 R09: fffffbfff1bfd1b6
R10: fffffbfff1bfd1b6 R11: 0000000000000000 R12: dffffc0000000000
R13: 1ffff92000000f74 R14: ffffffff88584905 R15: 0000000000000046
FS: 00007f2f15058700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020004038 CR3: 000000004dfe1000 CR4: 00000000003506f0
Call Trace:
lockdep_recursion_inc kernel/locking/lockdep.c:433 [inline]
lock_release+0x141/0x810 kernel/locking/lockdep.c:5656
rcu_read_unlock include/linux/rcupdate.h:721 [inline]
advance_sched+0x7be/0x930 net/sched/sch_taprio.c:769
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x50b/0xa60 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x3b3/0x1040 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0xf9/0x270 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:lock_release+0x592/0x810 kernel/locking/lockdep.c:5661
Code: 3c 23 00 74 08 4c 89 f7 e8 3b 3c 6a 00 f6 84 24 91 00 00 00 02 75 68 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 04 2c 00 00 00 00 4b c7 44 2c 08 00 00 00 00 65 48 8b 04 25
RSP: 0018:ffffc90002e97440 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff920005d2e9a RCX: dffffc0000000000
RDX: 1ffff920005d2e98 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90002e97568 R08: dffffc0000000000 R09: fffffbfff1bfd1b6
R10: fffffbfff1bfd1b6 R11: 0000000000000000 R12: dffffc0000000000
R13: 1ffff920005d2e94 R14: ffffc90002e974d0 R15: 0000000000000246
rcu_read_unlock include/linux/rcupdate.h:721 [inline]
packet_cached_dev_get+0x1c0/0x230 net/packet/af_packet.c:291
packet_snd net/packet/af_packet.c:2935 [inline]
packet_sendmsg+0x469/0x6750 net/packet/af_packet.c:3079
sock_sendmsg_nosec net/socket.c:704 [inline]
sock_sendmsg net/socket.c:724 [inline]
____sys_sendmsg+0x5b9/0x910 net/socket.c:2409
___sys_sendmsg net/socket.c:2463 [inline]
__sys_sendmmsg+0x3ba/0x750 net/socket.c:2549
__do_sys_sendmmsg net/socket.c:2578 [inline]
__se_sys_sendmmsg net/socket.c:2575 [inline]
__x64_sys_sendmmsg+0x9c/0xb0 net/socket.c:2575
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f2f160e2af9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2f15058188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f2f161f5f60 RCX: 00007f2f160e2af9
RDX: 000000000400004e RSI: 0000000020000d00 RDI: 0000000000000006
RBP: 00007f2f1613cff7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe99d0833f R14: 00007f2f15058300 R15: 0000000000022000
rcu: rcu_preempt kthread starved for 10462 jiffies! g322669 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:26576 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xb72/0x1460 kernel/sched/core.c:6253
schedule+0x12b/0x1f0 kernel/sched/core.c:6326
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x1fd/0x770 kernel/rcu/tree.c:1955
rcu_gp_kthread+0xa5/0x350 kernel/rcu/tree.c:2128
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
rcu: Stack dump where RCU GP kthread last ran:
NMI backtrace for cpu 1
CPU: 1 PID: 7243 Comm: syz-executor.0 Not tainted 5.16.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1dc/0x2d8 lib/dump_stack.c:106
nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x16a/0x280 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_check_gp_kthread_starvation+0x1ff/0x270 kernel/rcu/tree_stall.h:481
print_other_cpu_stall kernel/rcu/tree_stall.h:586 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:729 [inline]
rcu_pending kernel/rcu/tree.c:3878 [inline]
rcu_sched_clock_irq+0x23d5/0x2bc0 kernel/rcu/tree.c:2597
update_process_times+0x197/0x200 kernel/time/timer.c:1785
tick_sched_handle kernel/time/tick-sched.c:226 [inline]
tick_sched_timer+0x27d/0x420 kernel/time/tick-sched.c:1428
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x4cb/0xa60 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x3b3/0x1040 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0xf9/0x270 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20
RIP: 0010:csd_lock_wait kernel/smp.c:440 [inline]
RIP: 0010:smp_call_function_many_cond+0xbb2/0xda0 kernel/smp.c:969
Code: 83 e6 01 31 ff e8 fe b7 0b 00 41 83 e7 01 49 bf 00 00 00 00 00 fc ff df 75 0e e8 d9 b3 0b 00 eb 4c 0f 1f 80 00 00 00 00 f3 90 <42> 0f b6 04 3b 84 c0 75 11 41 f7 45 00 01 00 00 00 74 2b e8 b6 b3
RSP: 0018:ffffc90003257b40 EFLAGS: 00000246
RAX: ffffffff8178e3ca RBX: 1ffff1101734831d RCX: 0000000000040000
RDX: ffffc9000ac52000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc90003257c70 R08: ffffffff8178e392 R09: ffffffff844a3b20
R10: 0000000000000009 R11: ffff8880226bd700 R12: 0000000000000000
R13: ffff8880b9a418e8 R14: ffff8880b9b3a640 R15: dffffc0000000000
clock_was_set+0x86e/0x940 kernel/time/hrtimer.c:974
do_settimeofday64+0x618/0x7a0 kernel/time/timekeeping.c:1327
__do_sys_clock_settime kernel/time/posix-timers.c:1079 [inline]
__se_sys_clock_settime kernel/time/posix-timers.c:1067 [inline]
__x64_sys_clock_settime+0x23d/0x280 kernel/time/posix-timers.c:1067
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f3b38c4eaf9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3b37ba3188 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3
RAX: ffffffffffffffda RBX: 00007f3b38d62028 RCX: 00007f3b38c4eaf9
RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000000
RBP: 00007f3b38ca8ff7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff6f9080ef R14: 00007f3b37ba3300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: cc int3
1: cc int3
2: cc int3
3: cc int3
4: cc int3
5: cc int3
6: cc int3
7: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
c: 48 c7 c7 20 49 d5 8a mov $0xffffffff8ad54920,%rdi
13: 48 c7 c6 60 49 d5 8a mov $0xffffffff8ad54960,%rsi
1a: eb 0b jmp 0x27
1c: 66 2e 0f 1f 84 00 00 nopw %cs:0x0(%rax,%rax,1)
23: 00 00 00
26: 90 nop
27: 55 push %rbp
28: 41 57 push %r15
* 2a: 41 56 push %r14 <-- trapping instruction
2c: 41 55 push %r13
2e: 41 54 push %r12
30: 53 push %rbx
31: 48 83 ec 10 sub $0x10,%rsp
35: 49 89 f6 mov %rsi,%r14
38: 49 89 ff mov %rdi,%r15
3b: 65 gs
3c: 48 rex.W
3d: 8b .byte 0x8b
3e: 04 25 add $0x25,%al