ci-upstream-kasan-gce-smack-root/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci-upstream-kasan-gce-smack-root/syz-executor633854845 <...> Warning: Permanently added '10.128.0.14' (ED25519) to the list of known hosts. execve("ci-upstream-kasan-gce-smack-root/syz-executor633854845", ["ci-upstream-kasan-gce-smack-root/syz-executor633854845"], 0x7ffc2904f2d0 /* 10 vars */) = 0 brk(NULL) = 0x555564009000 brk(0x555564009d80) = 0x555564009d80 arch_prctl(ARCH_SET_FS, 0x555564009400) = 0 set_tid_address(0x5555640096d0) = 5616 set_robust_list(0x5555640096e0, 24) = 0 rseq({cpu_id_start=0, cpu_id=RSEQ_CPU_ID_UNINITIALIZED, rseq_cs=NULL, flags=0, node_id=0, mm_cid=0, slice_ctrl={request=0, granted=0, __reserved=0}, __reserved=0}, 33, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlinkat(AT_FDCWD, "/proc/self/exe", "/root/ci-upstream-kasan-gce-smack-root/syz-executor633854845", 4096) = 60 getrandom("\xd7\xbd\xea\x9b\xae\xd6\xd0\x7e", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555564009d80 brk(0x55556402ad80) = 0x55556402ad80 brk(0x55556402b000) = 0x55556402b000 mprotect(0x7f978d750000, 20480, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci-upstream-kasan-gce-smack-root/strace-static-x86_64: Process 5617 attached , child_tidptr=0x5555640096d0) = 5617 [pid 5617] set_robust_list(0x5555640096e0, 24) = 0 [pid 5617] rt_sigprocmask(SIG_SETMASK, [] [pid 5616] rt_sigprocmask(SIG_SETMASK, [] [pid 5617] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5616] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5617] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5617] setpgid(0, 0) = 0 [pid 5617] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5617] write(3, "1000", 4) = 4 [pid 5617] close(3) = 0 [pid 5617] write(1, "executing program\n", 18) = 18 executing program [pid 5617] mkdirat(AT_FDCWD, "./sys", 0777) = 0 [pid 5617] mount(NULL, "./sys", "sysfs", 0, NULL) = 0 [pid 5617] openat(AT_FDCWD, "./sys/bus/platform/devices/pcspkr/driver_override", O_WRONLY) = 3 [pid 5617] write(3, "\x73\x6e\x64\x5f\x64\x75\x6d\x6d\x79\x00", 10) = 10 [pid 5617] openat(AT_FDCWD, "./sys/bus/platform/drivers/snd_dummy/bind", O_WRONLY) = 4 [ 99.286460][ T5617] ------------[ cut here ]-[ 99.286460][ T5617] ------------[ cut here ]------------ [ 99.286472][ T5617] UBSAN: array-index-out-of-bounds in sound/drivers/dummy.c:1020:40 [ 99.286486][ T5617] index -1 is out of range for type 'int[8]' [ 99.286509][ T5617] CPU: 0 UID: 0 PID: 5617 Comm: syz-executor633 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 99.286531][ T5617] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 99.286547][ T5617] Call Trace: [ 99.286553][ T5617] [ 99.286560][ T5617] dump_stack_lvl+0xe8/0x150 [ 99.286609][ T5617] ubsan_epilogue+0xa/0x30 [ 99.286628][ T5617] __ubsan_handle_out_of_bounds+0xe8/0xf0 [ 99.286652][ T5617] ? __pfx_of_clk_set_defaults+0x10/0x10 [ 99.286671][ T5617] snd_dummy_probe+0x12c6/0x18f0 [ 99.286701][ T5617] ? _raw_spin_unlock_irqrestore+0x4c/0x80 [ 99.286727][ T5617] ? up_write+0x5a/0x190 [ 99.286754][ T5617] ? __pfx_snd_dummy_probe+0x10/0x10 [ 99.286777][ T5617] ? kernfs_put+0x7bc/0x820 [ 99.286796][ T5617] ? is_acpi_device_node+0x26/0x70 [ 99.286810][ T5617] ? acpi_dev_pm_attach+0xe9/0x240 [ 99.286852][ T5617] ? dev_pm_domain_attach+0xbd/0xf0 [ 99.286888][ T5617] ? __pfx_snd_dummy_probe+0x10/0x10 [ 99.286919][ T5617] platform_probe+0xf9/0x190 [ 99.286953][ T5617] ? __pfx_platform_probe+0x10/0x10 [ 99.286972][ T5617] really_probe+0x254/0xae0 [ 99.287000][ T5617] __driver_probe_device+0x1e8/0x360 [ 99.287026][ T5617] device_driver_attach+0xe0/0x1d0 [ 99.287052][ T5617] bind_store+0x1d3/0x220 [ 99.287077][ T5617] ? __pfx_sysfs_kf_write+0x10/0x10 [ 99.287090][ T5617] kernfs_fop_write_iter+0x3a5/0x540 [ 99.287117][ T5617] vfs_write+0x61e/0xbb0 [ 99.287145][ T5617] ? __pfx_vfs_write+0x10/0x10 [ 99.287168][ T5617] ? rt_spin_unlock+0x157/0x200 [ 99.287188][ T5617] ? rt_spin_unlock+0x163/0x200 [ 99.287212][ T5617] ksys_write+0x156/0x270 [ 99.287234][ T5617] ? __pfx_ksys_write+0x10/0x10 [ 99.287260][ T5617] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 99.287276][ T5617] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 99.287293][ T5617] do_syscall_64+0x174/0x580 [ 99.287314][ T5617] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 99.287331][ T5617] ? clear_bhb_loop+0x40/0x90 [ 99.287350][ T5617] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 99.287368][ T5617] RIP: 0033:0x7f978d6bd609 [ 99.287388][ T5617] Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 0f 1f 44 00 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 d8 ff ff ff f7 d8 64 89 01 48 [ 99.287401][ T5617] RSP: 002b:00007ffc5d9d4028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 99.287418][ T5617] RAX: ffffffffffffffda RBX: 0000200000000000 RCX: 00007f978d6bd609 [ 99.287429][ T5617] RDX: 0000000000000007 RSI: 0000200000000180 RDI: 0000000000000004 [ 99.287439][ T5617] RBP: 0000000000000001 R08: 0000000000000006 R09: 0000000000000006 [ 99.287447][ T5617] R10: 0000000000000006 R11: 0000000000000246 R12: 00007ffc5d9d4198 [ 99.287457][ T5617] R13: 0000200000000004 R14: 00007f978d750c40 R15: 0000000000000002 [ 99.287481][ T5617] [ 99.289008][ T5617] ---[ end trace ]--- [ 99.289046][ T5617] Kernel panic - not syncing: UBSAN: panic_on_warn set ... [ 99.289063][ T5617] CPU: 0 UID: 0 PID: 5617 Comm: syz-executor633 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 99.289085][ T5617] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 99.289098][ T5617] Call Trace: [ 99.289106][ T5617] [ 99.289115][ T5617] vpanic+0x56c/0xa60 [ 99.289143][ T5617] ? __pfx_vpanic+0x10/0x10 [ 99.289167][ T5617] ? irqentry_exit+0x218/0x8f0 [ 99.289207][ T5617] panic+0xc5/0xd0 [ 99.289228][ T5617] ? __pfx_panic+0x10/0x10 [ 99.289266][ T5617] check_panic_on_warn+0x89/0xb0 [ 99.289292][ T5617] __ubsan_handle_out_of_bounds+0xe8/0xf0 [ 99.289325][ T5617] ? __pfx_of_clk_set_defaults+0x10/0x10 [ 99.289352][ T5617] snd_dummy_probe+0x12c6/0x18f0 [ 99.289387][ T5617] ? _raw_spin_unlock_irqrestore+0x4c/0x80 [ 99.289419][ T5617] ? up_write+0x5a/0x190 [ 99.289456][ T5617] ? __pfx_snd_dummy_probe+0x10/0x10 [ 99.289489][ T5617] ? kernfs_put+0x7bc/0x820 [ 99.289515][ T5617] ? is_acpi_device_node+0x26/0x70 [ 99.289537][ T5617] ? acpi_dev_pm_attach+0xe9/0x240 [ 99.289565][ T5617] ? dev_pm_domain_attach+0xbd/0xf0 [ 99.289594][ T5617] ? __pfx_snd_dummy_probe+0x10/0x10 [ 99.289625][ T5617] platform_probe+0xf9/0x190 [ 99.289659][ T5617] ? __pfx_platform_probe+0x10/0x10 [ 99.289687][ T5617] really_probe+0x254/0xae0 [ 99.289726][ T5617] __driver_probe_device+0x1e8/0x360 [ 99.289763][ T5617] device_driver_attach+0xe0/0x1d0 [ 99.289800][ T5617] bind_store+0x1d3/0x220 [ 99.289947][ T5617] ? __pfx_sysfs_kf_write+0x10/0x10 [ 99.290013][ T5617] kernfs_fop_write_iter+0x3a5/0x540 [ 99.290142][ T5617] vfs_write+0x61e/0xbb0 [ 99.290213][ T5617] ? __pfx_vfs_write+0x10/0x10 [ 99.290300][ T5617] ? rt_spin_unlock+0x157/0x200 [ 99.290336][ T5617] ? rt_spin_unlock+0x163/0x200 [ 99.290427][ T5617] ksys_write+0x156/0x270 [ 99.290515][ T5617] ? __pfx_ksys_write+0x10/0x10 [ 99.290609][ T5617] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 99.290674][ T5617] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 99.290738][ T5617] do_syscall_64+0x174/0x580 [ 99.290807][ T5617] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 99.290884][ T5617] ? clear_bhb_loop+0x40/0x90 [ 99.290959][ T5617] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 99.291014][ T5617] RIP: 0033:0x7f978d6bd609 [ 99.291069][ T5617] Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 0f 1f 44 00 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 d8 ff ff ff f7 d8 64 89 01 48 [ 99.291113][ T5617] RSP: 002b:00007ffc5d9d4028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 99.291179][ T5617] RAX: ffffffffffffffda RBX: 0000200000000000 RCX: 00007f978d6bd609 [ 99.291222][ T5617] RDX: 0000000000000007 RSI: 0000200000000180 RDI: 0000000000000004 [ 99.291264][ T5617] RBP: 0000000000000001 R08: 0000000000000006 R09: 0000000000000006 [ 99.291310][ T5617] R10: 0000000000000006 R11: 0000000000000246 R12: 00007ffc5d9d4198 [ 99.291370][ T5617] R13: 0000200000000004 R14: 00007f978d750c40 R15: 0000000000000002 [ 99.291463][ T5617] [ 99.291645][ T5617] Kernel Offset: disabled