./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3812762492
<...>
Warning: Permanently added '10.128.1.20' (ED25519) to the list of known hosts.
execve("./syz-executor3812762492", ["./syz-executor3812762492"], 0x7fff9926a4c0 /* 10 vars */) = 0
brk(NULL) = 0x55556dd2b000
brk(0x55556dd2bd00) = 0x55556dd2bd00
arch_prctl(ARCH_SET_FS, 0x55556dd2b380) = 0
set_tid_address(0x55556dd2b650) = 5231
set_robust_list(0x55556dd2b660, 24) = 0
rseq(0x55556dd2bca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor3812762492", 4096) = 28
getrandom("\x48\x74\xe7\x84\xfe\x66\x15\xf5", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x55556dd2bd00
brk(0x55556dd4cd00) = 0x55556dd4cd00
brk(0x55556dd4d000) = 0x55556dd4d000
mprotect(0x7f4ab599b000, 16384, PROT_READ) = 0
mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000
mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000
mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55556dd2b650) = 5232
./strace-static-x86_64: Process 5232 attached
[pid 5232] set_robust_list(0x55556dd2b660, 24) = 0
[pid 5232] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5232] setpgid(0, 0) = 0
[pid 5232] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5232] write(3, "1000", 4) = 4
[pid 5232] close(3) = 0
[pid 5232] write(1, "executing program\n", 18executing program
) = 18
[pid 5232] openat(AT_FDCWD, "blkio.bfq.io_service_bytes_recursive", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3
[pid 5232] socket(AF_INET6, SOCK_STREAM, IPPROTO_IP) = 4
[ 117.758823][ T19] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2690 jiffies s: 397 root: 0x1/.
[ 117.770561][ T19] rcu: blocking rcu_node structures (internal RCU debug):
[ 117.777692][ T19] Sending NMI from CPU 1 to CPUs 0:
[ 117.782987][ C0] NMI backtrace for cpu 0
[ 117.783016][ C0] CPU: 0 UID: 0 PID: 5232 Comm: syz-executor381 Not tainted 6.12.0-rc2-syzkaller-00527-gc531f2269a53 #0
[ 117.783035][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
[ 117.783050][ C0] RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x18/0x90
[ 117.783098][ C0] Code: 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 4c 8b 04 24 65 48 8b 0c 25 c0 d7 03 00 65 8b 05 80 eb 6e 7e <25> 00 01 ff 00 74 10 3d 00 01 00 00 75 57 83 b9 1c 16 00 00 00 74
[ 117.783111][ C0] RSP: 0018:ffffc90003c57788 EFLAGS: 00000246
[ 117.783125][ C0] RAX: 0000000000000201 RBX: 0000000000000003 RCX: ffff88802b26bc00
[ 117.783136][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[ 117.783145][ C0] RBP: 0000000000000000 R08: ffffffff8bc1a4b6 R09: 0000000000000000
[ 117.783156][ C0] R10: ffffc90003c57940 R11: fffff5200078af2b R12: ffffc90003c57920
[ 117.783167][ C0] R13: 0000000000000003 R14: ffffc90003c57938 R15: 1ffff9200078af27
[ 117.783179][ C0] FS: 000055556dd2b380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
[ 117.783192][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 117.783204][ C0] CR2: 00007f4ab599f0d0 CR3: 000000007d002000 CR4: 00000000003526f0
[ 117.783217][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 117.783226][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 117.783236][ C0] Call Trace:
[ 117.783244][ C0]
[ 117.783251][ C0] ? nmi_cpu_backtrace+0x3c2/0x4d0
[ 117.783275][ C0] ? __pfx_lock_acquire+0x10/0x10
[ 117.783297][ C0] ? __pfx_nmi_cpu_backtrace+0x10/0x10
[ 117.783315][ C0] ? nmi_handle+0x2a/0x5a0
[ 117.783337][ C0] ? nmi_cpu_backtrace_handler+0xc/0x20
[ 117.783355][ C0] ? nmi_handle+0x14f/0x5a0
[ 117.783370][ C0] ? nmi_handle+0x2a/0x5a0
[ 117.783386][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x90
[ 117.783404][ C0] ? default_do_nmi+0x63/0x160
[ 117.783423][ C0] ? exc_nmi+0x123/0x1f0
[ 117.783442][ C0] ? end_repeat_nmi+0xf/0x53
[ 117.783461][ C0] ? xas_start+0x76/0x7b0
[ 117.783477][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x90
[ 117.783495][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x90
[ 117.783515][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x90
[ 117.783533][ C0]
[ 117.783538][ C0]
[ 117.783543][ C0] xas_start+0x76/0x7b0
[ 117.783558][ C0] ? xas_load+0x24/0x5c0
[ 117.783574][ C0] xas_load+0x2c/0x5c0
[ 117.783593][ C0] xas_store+0xa7/0x1890
[ 117.783611][ C0] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 117.783634][ C0] __xa_erase+0x135/0x220
[ 117.783651][ C0] ? __pfx___xa_erase+0x10/0x10
[ 117.783674][ C0] sock_devmem_dontneed+0x37b/0x740
[ 117.783695][ C0] ? __pfx_sock_devmem_dontneed+0x10/0x10
[ 117.783726][ C0] ? __might_fault+0xc6/0x120
[ 117.783743][ C0] sk_setsockopt+0x73c/0x33b0
[ 117.783762][ C0] ? __pfx_sk_setsockopt+0x10/0x10
[ 117.783776][ C0] ? do_raw_spin_lock+0x14f/0x370
[ 117.783796][ C0] ? aa_sk_perm+0x96d/0xab0
[ 117.783819][ C0] ? __pfx_aa_sk_perm+0x10/0x10
[ 117.783835][ C0] ? aa_sock_opt_perm+0x79/0x120
[ 117.783854][ C0] do_sock_setsockopt+0x2fb/0x720
[ 117.783873][ C0] ? __pfx_do_sock_setsockopt+0x10/0x10
[ 117.783889][ C0] ? _raw_spin_unlock_irq+0x2e/0x50
[ 117.783905][ C0] ? ptrace_notify+0x279/0x380
[ 117.783924][ C0] ? __pfx_ptrace_notify+0x10/0x10
[ 117.783944][ C0] __sys_setsockopt+0x1a2/0x250
[ 117.783962][ C0] __x64_sys_setsockopt+0xb5/0xd0
[ 117.783980][ C0] do_syscall_64+0xf3/0x230
[ 117.783997][ C0] ? clear_bhb_loop+0x35/0x90
[ 117.784014][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 117.784030][ C0] RIP: 0033:0x7f4ab5928a39
[ 117.784048][ C0] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 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
[ 117.784059][ C0] RSP: 002b:00007fff917ce128 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
[ 117.784075][ C0] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f4ab5928a39
[ 117.784086][ C0] RDX: 0000000000000050 RSI: 0000000000000001 RDI: 0000000000000004
[ 117.784095][ C0] RBP: 00007f4ab599b5f0 R08: 0000000000000010 R09: 0000000000000006
[ 117.784105][ C0] R10: 0000000020000000 R11: 0000000000000246 R12: 0000000000000001
[ 117.784115][ C0] R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001
[ 117.784132][ C0]
[ 117.784140][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.158 msecs