rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-...!: (10499 ticks this GP) idle=3ef/1/0x4000000000000000 softirq=141822/141822 fqs=22
(t=10501 jiffies g=258709 q=1121)
rcu: rcu_preempt kthread starved for 10417 jiffies! g258709 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:28688 pid: 14 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:4969 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6250
schedule+0xd2/0x260 kernel/sched/core.c:6323
schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881
rcu_gp_fqs_loop+0x186/0x810 kernel/rcu/tree.c:1955
rcu_gp_kthread+0x1de/0x320 kernel/rcu/tree.c:2128
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 4991 Comm: syz-executor.4 Not tainted 5.15.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__sanitizer_cov_trace_const_cmp1+0x1/0x80 kernel/kcov.c:272
Code: fe 72 1f 48 83 c2 01 4c 89 44 38 e8 48 c7 44 38 e0 06 00 00 00 48 89 4c 38 f0 4e 89 54 c8 20 48 89 10 c3 66 0f 1f 44 00 00 53 <41> 89 fb 41 89 f1 bf 03 00 00 00 65 48 8b 0c 25 40 70 02 00 48 89
RSP: 0018:ffffc900173478a8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff88807d123380 RCX: ffffc900127f1000
RDX: 0000000000000005 RSI: 0000000000000001 RDI: 0000000000000000
RBP: dffffc0000000000 R08: 0000000000000000 R09: 000000000000000a
R10: ffffffff885e267f R11: 000000000000000a R12: ffffc90017347948
R13: ffff888077e2a098 R14: ffffffff8d3f7ba0 R15: 0000000000000001
FS: 00007f382fa87700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f382fa66718 CR3: 000000006fd16000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
sctp_bind_addr_state+0xe1/0x1d0 net/sctp/bind_addr.c:405
sctp_copy_local_addr_list+0x1fe/0x4f0 net/sctp/protocol.c:162
sctp_copy_one_addr net/sctp/bind_addr.c:460 [inline]
sctp_bind_addr_copy+0xde/0x460 net/sctp/bind_addr.c:56
sctp_connect_new_asoc+0x1cd/0x770 net/sctp/socket.c:1092
sctp_sendmsg_new_asoc net/sctp/socket.c:1690 [inline]
sctp_sendmsg+0x13bc/0x1d30 net/sctp/socket.c:2000
inet_sendmsg+0x99/0xe0 net/ipv4/af_inet.c:820
sock_sendmsg_nosec net/socket.c:704 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:724
__sys_sendto+0x21c/0x320 net/socket.c:2036
__do_sys_sendto net/socket.c:2048 [inline]
__se_sys_sendto net/socket.c:2044 [inline]
__x64_sys_sendto+0xdd/0x1b0 net/socket.c:2044
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f38325b6ae9
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:00007f382fa87188 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f38326ca320 RCX: 00007f38325b6ae9
RDX: 0000000000034000 RSI: 0000000020847fff RDI: 0000000000000005
RBP: 00007f3832610f6d R08: 000000002005ffe4 R09: 000000000000001c
R10: 00000000000003f3 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffea05ab36f R14: 00007f382fa87300 R15: 0000000000022000
NMI backtrace for cpu 0
CPU: 0 PID: 4969 Comm: syz-executor.4 Not tainted 5.15.0-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+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
rcu_dump_cpu_stacks+0x25e/0x3f0 kernel/rcu/tree_stall.h:343
print_cpu_stall kernel/rcu/tree_stall.h:627 [inline]
check_cpu_stall kernel/rcu/tree_stall.h:711 [inline]
rcu_pending kernel/rcu/tree.c:3878 [inline]
rcu_sched_clock_irq.cold+0x9d/0x746 kernel/rcu/tree.c:2597
update_process_times+0x16d/0x200 kernel/time/timer.c:1785
tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226
tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1421
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x1c0/0xe50 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x31c/0x790 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1086 [inline]
__sysvec_apic_timer_interrupt+0x146/0x530 arch/x86/kernel/apic/apic.c:1103
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1097
asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:__sanitizer_cov_trace_pc+0x37/0x60 kernel/kcov.c:200
Code: 81 e1 00 01 00 00 65 48 8b 14 25 40 70 02 00 a9 00 01 ff 00 74 0e 85 c9 74 35 8b 82 a4 15 00 00 85 c0 74 2b 8b 82 80 15 00 00 <83> f8 02 75 20 48 8b 8a 88 15 00 00 8b 92 84 15 00 00 48 8b 01 48
RSP: 0018:ffffc900172278b0 EFLAGS: 00000246
RAX: 0000000000000002 RBX: ffff88808a997380 RCX: 0000000000000000
RDX: ffff888086561d00 RSI: ffffffff885e2621 RDI: 0000000000000003
RBP: dffffc0000000000 R08: 0000000000000000 R09: 000000000000000a
R10: ffffffff885e267f R11: 000000000000000a R12: ffffc90017227948
R13: ffff888019642098 R14: ffffffff8d3f7ba0 R15: 0000000000000000
sctp_bind_addr_state+0xb1/0x1d0 net/sctp/bind_addr.c:405
sctp_copy_local_addr_list+0x1fe/0x4f0 net/sctp/protocol.c:162
sctp_copy_one_addr net/sctp/bind_addr.c:460 [inline]
sctp_bind_addr_copy+0xde/0x460 net/sctp/bind_addr.c:56
sctp_connect_new_asoc+0x1cd/0x770 net/sctp/socket.c:1092
sctp_sendmsg_new_asoc net/sctp/socket.c:1690 [inline]
sctp_sendmsg+0x13bc/0x1d30 net/sctp/socket.c:2000
inet_sendmsg+0x99/0xe0 net/ipv4/af_inet.c:820
sock_sendmsg_nosec net/socket.c:704 [inline]
sock_sendmsg+0xcf/0x120 net/socket.c:724
__sys_sendto+0x21c/0x320 net/socket.c:2036
__do_sys_sendto net/socket.c:2048 [inline]
__se_sys_sendto net/socket.c:2044 [inline]
__x64_sys_sendto+0xdd/0x1b0 net/socket.c:2044
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f38325b6ae9
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:00007f382faea188 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f38326ca0e0 RCX: 00007f38325b6ae9
RDX: 0000000000034000 RSI: 0000000020847fff RDI: 0000000000000005
RBP: 00007f3832610f6d R08: 000000002005ffe4 R09: 000000000000001c
R10: 00000000000003f3 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffea05ab36f R14: 00007f382faea300 R15: 0000000000022000
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 72 1f jb 0x21
2: 48 83 c2 01 add $0x1,%rdx
6: 4c 89 44 38 e8 mov %r8,-0x18(%rax,%rdi,1)
b: 48 c7 44 38 e0 06 00 movq $0x6,-0x20(%rax,%rdi,1)
12: 00 00
14: 48 89 4c 38 f0 mov %rcx,-0x10(%rax,%rdi,1)
19: 4e 89 54 c8 20 mov %r10,0x20(%rax,%r9,8)
1e: 48 89 10 mov %rdx,(%rax)
21: c3 retq
22: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1)
28: 53 push %rbx
* 29: 41 89 fb mov %edi,%r11d <-- trapping instruction
2c: 41 89 f1 mov %esi,%r9d
2f: bf 03 00 00 00 mov $0x3,%edi
34: 65 48 8b 0c 25 40 70 mov %gs:0x27040,%rcx
3b: 02 00
3d: 48 rex.W
3e: 89 .byte 0x89