ci2-upstream-fs/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-upstream-fs/syz-executor3804291418 <...> Warning: Permanently added '10.128.0.170' (ED25519) to the list of known hosts. execve("ci2-upstream-fs/syz-executor3804291418", ["ci2-upstream-fs/syz-executor3804291418"], 0x7ffe6cc99090 /* 10 vars */) = 0 brk(NULL) = 0x55556c9f0000 brk(0x55556c9f0d80) = 0x55556c9f0d80 arch_prctl(ARCH_SET_FS, 0x55556c9f0400) = 0 set_tid_address(0x55556c9f06d0) = 5609 set_robust_list(0x55556c9f06e0, 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/ci2-upstream-fs/syz-executor3804291418", 4096) = 44 getrandom("\x4b\xc3\x34\x6b\x1e\x69\xc9\xdd", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556c9f0d80 brk(0x55556ca11d80) = 0x55556ca11d80 brk(0x55556ca12000) = 0x55556ca12000 mprotect(0x7fc7f4c62000, 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|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5610 attached , child_tidptr=0x55556c9f06d0) = 5610 [pid 5609] rt_sigprocmask(SIG_SETMASK, [] [pid 5610] set_robust_list(0x55556c9f06e0, 24 [pid 5609] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5610] <... set_robust_list resumed>) = 0 [pid 5610] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5610] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5610] setpgid(0, 0) = 0 [pid 5610] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5610] write(3, "1000", 4) = 4 [pid 5610] close(3) = 0 [pid 5610] write(1, "executing program\n", 18) = 18 executing program [pid 5610] mkdirat(AT_FDCWD, "./config", 0777) = 0 [pid 5610] mount(NULL, "./config", "configfs", 0, NULL) = 0 [pid 5610] mkdirat(AT_FDCWD, "./config/usb_gadget/g1", 0777) = 0 [pid 5610] mkdirat(AT_FDCWD, "./config/usb_gadget/g1/configs/c.1", 0777) = 0 [pid 5610] mkdirat(AT_FDCWD, "./config/usb_gadget/g1/functions/hid.usb0", 0777) = 0 [pid 5610] symlinkat("./config/usb_gadget/g1/functions/hid.usb0", AT_FDCWD, "./config/usb_gadget/g1/configs/c.1/hid.usb0") = 0 [pid 5610] openat(AT_FDCWD, "./config/usb_gadget/g1/UDC", O_RDWR) = 3 [pid 5610] write(3, "dummy_udc.0\n", 12) = 12 [pid 5610] exit_group(0) = ? [pid 5610] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5610, si_uid=0, si_status=0, si_utime=0, si_stime=4 /* 0.04 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5614 attached , child_tidptr=0x55556c9f06d0) = 5614 [pid 5614] set_robust_list(0x55556c9f06e0, 24 [pid 5609] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5614] <... set_robust_list resumed>) = 0 [pid 5614] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5614] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5614] setpgid(0, 0) = 0 [pid 5614] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5614] write(3, "1000", 4) = 4 [pid 5614] close(3) = 0 [pid 5614] write(1, "executing program\n", 18) = 18 executing program [pid 5614] mkdirat(AT_FDCWD, "./config", 0777) = -1 EEXIST (File exists) [pid 5614] mount(NULL, "./config", "configfs", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5614] mkdirat(AT_FDCWD, "./config/usb_gadget/g1", 0777) = -1 EEXIST (File exists) [pid 5614] mkdirat(AT_FDCWD, "./config/usb_gadget/g1/configs/c.1", 0777) = -1 EEXIST (File exists) [pid 5614] mkdirat(AT_FDCWD, "./config/usb_gadget/g1/functions/hid.usb0", 0777) = -1 EEXIST (File exists) [pid 5614] symlinkat("./config/usb_gadget/g1/functions/hid.usb0", AT_FDCWD, "./config/usb_gadget/g1/configs/c.1/hid.usb0") = -1 EEXIST (File exists) [pid 5614] openat(AT_FDCWD, "./config/usb_gadget/g1/UDC", O_RDWR) = 3 [pid 5614] write(3, "dummy_udc.0\n", 12) = -1 EBUSY (Device or resource busy) [pid 5614] exit_group(0) = ? [pid 5614] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5614, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5615 attached , child_tidptr=0x55556c9f06d0) = 5615 [pid 5615] set_robust_list(0x55556c9f06e0, 24) = 0 [pid 5609] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5615] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5615] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5615] setpgid(0, 0) = 0 [pid 5615] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5615] write(3, "1000", 4) = 4 [pid 5615] close(3) = 0 executing program [pid 5615] write(1, "executing program\n", 18) = 18 [pid 5615] mkdirat(AT_FDCWD, "./config", 0777) = -1 EEXIST (File exists) [pid 5615] mount(NULL, "./config", "configfs", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5615] mkdirat(AT_FDCWD, "./config/usb_gadget/g1", 0777) = -1 EEXIST (File exists) [pid 5615] mkdirat(AT_FDCWD, "./config/usb_gadget/g1/configs/c.1", 0777) = -1 EEXIST (File exists) [pid 5615] mkdirat(AT_FDCWD, "./config/usb_gadget/g1/functions/hid.usb0", 0777) = -1 EEXIST (File exists) [pid 5615] symlinkat("./config/usb_gadget/g1/functions/hid.usb0", AT_FDCWD, "./config/usb_gadget/g1/configs/c.1/hid.usb0") = -1 EEXIST (File exists) [pid 5615] openat(AT_FDCWD, "./config/usb_gadget/g1/UDC", O_RDWR) = 3 [pid 5615] write(3, "dummy_udc.0\n", 12) = -1 EBUSY (Device or resource busy) [pid 5615] exit_group(0) = ? [pid 5615] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5615, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5616 attached , child_tidptr=0x55556c9f06d0) = 5616 [pid 5616] set_robust_list(0x55556c9f06e0, 24 [pid 5609] rt_sigprocmask(SIG_SETMASK, [] [pid 5616] <... set_robust_list resumed>) = 0 [pid 5609] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5616] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5616] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5616] setpgid(0, 0) = 0 [pid 5616] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5616] write(3, "1000", 4) = 4 [pid 5616] close(3) = 0 executing program [pid 5616] write(1, "executing program\n", 18) = 18 [pid 5616] mkdirat(AT_FDCWD, "./config", 0777) = -1 EEXIST (File exists) [pid 5616] mount(NULL, "./config", "configfs", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5616] mkdirat(AT_FDCWD, "./config/usb_gadget/g1", 0777) = -1 EEXIST (File exists) [pid 5616] mkdirat(AT_FDCWD, "./config/usb_gadget/g1/configs/c.1", 0777) = -1 EEXIST (File exists) [pid 5616] mkdirat(AT_FDCWD, "./config/usb_gadget/g1/functions/hid.usb0", 0777) = -1 EEXIST (File exists) [pid 5616] symlinkat("./config/usb_gadget/g1/functions/hid.usb0", AT_FDCWD, "./config/usb_gadget/g1/configs/c.1/hid.usb0") = -1 EEXIST (File exists) [pid 5616] openat(AT_FDCWD, "./config/usb_gadget/g1/UDC", O_RDWR) = 3 [pid 5616] write(3, "dummy_udc.0\n", 12) = -1 EBUSY (Device or resource busy) [pid 5616] exit_group(0) = ? [pid 5616] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5616, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5618 attached , child_tidptr=0x55556c9f06d0) = 5618 [pid 5618] set_robust_list(0x55556c9f06e0, 24) = 0 [pid 5609] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5618] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5618] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5618] setpgid(0, 0) = 0 [pid 5618] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5618] write(3, "1000", 4) = 4 [pid 5618] close(3) = 0 [pid 5618] write(1, "executing program\n", 18) = 18 executing program [pid 5618] mkdirat(AT_FDCWD, "./config", 0777) = -1 EEXIST (File exists) [pid 5618] mount(NULL, "./config", "configfs", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5618] mkdirat(AT_FDCWD, "./config/usb_gadget/g1", 0777) = -1 EEXIST (File exists) [pid 5618] mkdirat(AT_FDCWD, "./config/usb_gadget/g1/configs/c.1", 0777) = -1 EEXIST (File exists) [pid 5618] mkdirat(AT_FDCWD, "./config/usb_gadget/g1/functions/hid.usb0", 0777) = -1 EEXIST (File exists) [pid 5618] symlinkat("./config/usb_gadget/g1/functions/hid.usb0", AT_FDCWD, "./config/usb_gadget/g1/configs/c.1/hid.usb0") = -1 EEXIST (File exists) [pid 5618] openat(AT_FDCWD, "./config/usb_gadget/g1/UDC", O_RDWR) = 3 [pid 5618] write(3, "dummy_udc.0\n", 12) = -1 EBUSY (Device or resource busy) [pid 5618] exit_group(0) = ? [ 99.536667][ T10] usb 1-1: new high-speed USB device number 2 using dummy_hcd [pid 5618] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5618, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5619 attached , child_tidptr=0x55556c9f06d0) = 5619 [pid 5609] rt_sigprocmask(SIG_SETMASK, [] [pid 5619] set_robust_list(0x55556c9f06e0, 24 [pid 5609] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5619] <... set_robust_list resumed>) = 0 [pid 5619] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5619] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5619] setpgid(0, 0) = 0 [pid 5619] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5619] write(3, "1000", 4) = 4 [pid 5619] close(3) = 0 executing program [pid 5619] write(1, "executing program\n", 18) = 18 [pid 5619] mkdirat(AT_FDCWD, "./config", 0777) = -1 EEXIST (File exists) [pid 5619] mount(NULL, "./config", "configfs", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5619] mkdirat(AT_FDCWD, "./config/usb_gadget/g1", 0777) = -1 EEXIST (File exists) [pid 5619] mkdirat(AT_FDCWD, "./config/usb_gadget/g1/configs/c.1", 0777) = -1 EEXIST (File exists) [pid 5619] mkdirat(AT_FDCWD, "./config/usb_gadget/g1/functions/hid.usb0", 0777) = -1 EEXIST (File exists) [pid 5619] symlinkat("./config/usb_gadget/g1/functions/hid.usb0", AT_FDCWD, "./config/usb_gadget/g1/configs/c.1/hid.usb0") = -1 EEXIST (File exists) [pid 5619] openat(AT_FDCWD, "./config/usb_gadget/g1/UDC", O_RDWR) = 3 [pid 5619] write(3, "dummy_udc.0\n", 12) = -1 EBUSY (Device or resource busy) [pid 5619] exit_group(0) = ? [pid 5619] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5619, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5620 attached [pid 5620] set_robust_list(0x55556c9f06e0, 24 [pid 5609] <... clone resumed>, child_tidptr=0x55556c9f06d0) = 5620 [pid 5620] <... set_robust_list resumed>) = 0 [pid 5609] rt_sigprocmask(SIG_SETMASK, [] [pid 5620] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5609] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5620] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5620] setpgid(0, 0) = 0 [pid 5620] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5620] write(3, "1000", 4) = 4 [pid 5620] close(3) = 0 [pid 5620] write(1, "executing program\n", 18) = 18 executing program [pid 5620] mkdirat(AT_FDCWD, "./config", 0777) = -1 EEXIST (File exists) [pid 5620] mount(NULL, "./config", "configfs", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5620] mkdirat(AT_FDCWD, "./config/usb_gadget/g1", 0777) = -1 EEXIST (File exists) [pid 5620] mkdirat(AT_FDCWD, "./config/usb_gadget/g1/configs/c.1", 0777) = -1 EEXIST (File exists) [pid 5620] mkdirat(AT_FDCWD, "./config/usb_gadget/g1/functions/hid.usb0", 0777) = -1 EEXIST (File exists) [pid 5620] symlinkat("./config/usb_gadget/g1/functions/hid.usb0", AT_FDCWD, "./config/usb_gadget/g1/configs/c.1/hid.usb0") = -1 EEXIST (File exists) [pid 5620] openat(AT_FDCWD, "./config/usb_gadget/g1/UDC", O_RDWR) = 3 [pid 5620] write(3, "dummy_udc.0\n", 12) = -1 EBUSY (Device or resource busy) [pid 5620] exit_group(0) = ? [pid 5620] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5620, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 99.706731][ T10] usb 1-1: New USB device found, idVendor=0000, idProduct=0000, bcdDevice= 7.03 [ 99.713175][ T10] usb 1-1: config 1 interface 0 altsetting 0 endpoint 0x81 has invalid wMaxPacketSize 0 [ 99.713200][ T10] usb 1-1: config 1 interface 0 altsetting 0 endpoint 0x2 has invalid wMaxPacketSize 0 [ 99.713229][ T10] usb 1-1: Dual-Role OTG device on HNP port [ 99.713518][ T10] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55556c9f06d0) = 5621 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-upstream-fs/strace-static-x86_64: Process 5621 attached [ 99.775038][ C0] ------------[ cut here ]------------ [ 99.775056][ C0] usb_ep_enable: ep129 (ep1in-bulk) has maxpacket 0 [ 99.775077][ C0] WARNING: drivers/usb/gadget/udc/core.c:125 at usb_ep_enable+0x148/0x480, CPU#0: ktimers/0/16 [ 99.798179][ C0] Modules linked in: [ 99.802142][ C0] CPU: 0 UID: 0 PID: 16 Comm: ktimers/0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 99.811759][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [pid 5621] set_robust_list(0x55556c9f06e0, 24) = 0 [pid 5621] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5621] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5621] setpgid(0, 0) = 0 [ 99.821895][ C0] RIP: 0010:usb_ep_enable+0x1bc/0x480 [ 99.827353][ C0] Code: 2a d9 f8 fa 49 83 3f 00 48 c7 c0 40 e6 21 8c 49 c7 c0 60 e6 21 8c 4c 0f 44 c0 4c 89 f7 48 c7 c6 cf 20 b4 8d 44 89 ea 4c 89 e1 <67> 48 0f b9 3a bd ea ff ff ff 0f 1f 44 00 00 e8 d0 13 8c fa 65 8b [ 99.847014][ C0] RSP: 0018:ffffc900001576b8 EFLAGS: 00010282 [ 99.853138][ C0] RAX: ffffffff8c21e640 RBX: ffff888028244120 RCX: ffffffff8c2204c0 [ 99.861197][ C0] RDX: 0000000000000081 RSI: ffffffff8db420cf RDI: ffffffff90bf0350 [pid 5621] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5621] write(3, "1000", 4) = 4 [pid 5621] close(3) = 0 [pid 5621] write(1, "executing program\n", 18) = 18 executing program [pid 5621] mkdirat(AT_FDCWD, "./config", 0777) = -1 EEXIST (File exists) [pid 5621] mount(NULL, "./config", "configfs", 0, NULL) = -1 EBUSY (Device or resource busy) [ 99.869220][ C0] RBP: dffffc0000000000 R08: ffffffff8c21e660 R09: 0000000000000100 [ 99.877258][ C0] R10: 0000000000000100 R11: 0000000000000003 R12: ffffffff8c2204c0 [ 99.885281][ C0] R13: 0000000000000081 R14: ffffffff90bf0350 R15: ffff888028244138 [ 99.893290][ C0] FS: 0000000000000000(0000) GS:ffff8881249bb000(0000) knlGS:0000000000000000 [ 99.902289][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 99.908946][ C0] CR2: 00007ffe505d7770 CR3: 000000002c862000 CR4: 00000000003526f0 [ 99.917004][ C0] Call Trace: [ 99.920324][ C0] [pid 5621] mkdirat(AT_FDCWD, "./config/usb_gadget/g1", 0777) = -1 EEXIST (File exists) [pid 5621] mkdirat(AT_FDCWD, "./config/usb_gadget/g1/configs/c.1", 0777) = -1 EEXIST (File exists) [pid 5621] mkdirat(AT_FDCWD, "./config/usb_gadget/g1/functions/hid.usb0", 0777) = -1 EEXIST (File exists) [pid 5621] symlinkat("./config/usb_gadget/g1/functions/hid.usb0", AT_FDCWD, "./config/usb_gadget/g1/configs/c.1/hid.usb0") = -1 EEXIST (File exists) [pid 5621] openat(AT_FDCWD, "./config/usb_gadget/g1/UDC", O_RDWR) = 3 [ 99.923297][ C0] hidg_set_alt+0x12a/0xa50 [ 99.927887][ C0] ? rcu_is_watching+0x16/0xb0 [ 99.932705][ C0] set_config+0x749/0x1160 [ 99.937229][ C0] composite_setup+0x1de7/0x3480 [ 99.942241][ C0] configfs_composite_setup+0xbd/0x100 [ 99.947784][ C0] dummy_timer+0x2f5d/0x4d30 [ 99.952460][ C0] ? rtlock_slowlock_locked+0xfb/0x3c20 [ 99.958095][ C0] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 99.963498][ C0] ? __pfx_dummy_timer+0x10/0x10 [ 99.968491][ C0] ? _raw_spin_unlock_irqrestore+0x30/0x80 [pid 5621] write(3, "dummy_udc.0\n", 12) = -1 EBUSY (Device or resource busy) [pid 5621] exit_group(0) = ? [pid 5621] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5621, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 99.974347][ C0] ? __pfx_dummy_timer+0x10/0x10 [ 99.979366][ C0] __hrtimer_run_queues+0x3eb/0xaf0 [ 99.984619][ C0] hrtimer_run_softirq+0x1e1/0x2e0 [ 99.989831][ C0] handle_softirqs+0x1da/0x6d0 [ 99.994678][ C0] ? smpboot_thread_fn+0x4e/0xa70 [ 99.999807][ C0] run_ktimerd+0x6a/0x100 [ 100.004192][ C0] smpboot_thread_fn+0x565/0xa70 [ 100.009211][ C0] ? smpboot_thread_fn+0x4e/0xa70 [ 100.014285][ C0] kthread+0x38b/0x470 [ 100.018433][ C0] ? __pfx_smpboot_thread_fn+0x10/0x10 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [ 100.023945][ C0] ? __pfx_kthread+0x10/0x10 [ 100.028596][ C0] ret_from_fork+0x514/0xb70 [ 100.033205][ C0] ? __pfx_ret_from_fork+0x10/0x10 [ 100.038354][ C0] ? __switch_to+0xc89/0x1420 [ 100.043068][ C0] ? __pfx_kthread+0x10/0x10 [ 100.047745][ C0] ret_from_fork_asm+0x1a/0x30 [ 100.052574][ C0] [ 100.055627][ C0] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 100.062944][ C0] CPU: 0 UID: 0 PID: 16 Comm: ktimers/0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55556c9f06d0) = 5622 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [ 100.072516][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 100.082605][ C0] Call Trace: [ 100.085928][ C0] [ 100.088886][ C0] vpanic+0x56d/0xa60 [ 100.092901][ C0] ? __pfx__printk+0x10/0x10 [ 100.097530][ C0] ? __pfx_vpanic+0x10/0x10 [ 100.102063][ C0] ? is_bpf_text_address+0x292/0x2b0 [ 100.107391][ C0] ? is_bpf_text_address+0x26/0x2b0 [ 100.112628][ C0] panic+0xc5/0xd0 [ 100.116379][ C0] ? __pfx_panic+0x10/0x10 [ 100.120833][ C0] ? ret_from_fork_asm+0x1a/0x30 ci2-upstream-fs/strace-static-x86_64: Process 5622 attached [pid 5622] set_robust_list(0x55556c9f06e0, 24) = 0 [pid 5622] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5622] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5622] setpgid(0, 0) = 0 [pid 5622] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5622] write(3, "1000", 4) = 4 [pid 5622] close(3) = 0 [pid 5622] write(1, "executing program\n", 18) = 18 executing program [ 100.125804][ C0] __warn+0x315/0x4c0 [ 100.129818][ C0] ? usb_ep_enable+0x148/0x480 [ 100.134637][ C0] ? usb_ep_enable+0x148/0x480 [ 100.139449][ C0] __report_bug+0x276/0x570 [ 100.143996][ C0] ? usb_ep_enable+0x148/0x480 [ 100.148803][ C0] ? __pfx___report_bug+0x10/0x10 [ 100.153898][ C0] report_bug_entry+0x19b/0x290 [ 100.158810][ C0] ? usb_ep_enable+0x1bc/0x480 [ 100.163666][ C0] ? usb_ep_enable+0x1c1/0x480 [ 100.168480][ C0] handle_bug+0xce/0x200 [pid 5622] mkdirat(AT_FDCWD, "./config", 0777) = -1 EEXIST (File exists) [pid 5622] mount(NULL, "./config", "configfs", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5622] mkdirat(AT_FDCWD, "./config/usb_gadget/g1", 0777) = -1 EEXIST (File exists) [pid 5622] mkdirat(AT_FDCWD, "./config/usb_gadget/g1/configs/c.1", 0777) = -1 EEXIST (File exists) [pid 5622] mkdirat(AT_FDCWD, "./config/usb_gadget/g1/functions/hid.usb0", 0777) = -1 EEXIST (File exists) [pid 5622] symlinkat("./config/usb_gadget/g1/functions/hid.usb0", AT_FDCWD, "./config/usb_gadget/g1/configs/c.1/hid.usb0") = -1 EEXIST (File exists) [pid 5622] openat(AT_FDCWD, "./config/usb_gadget/g1/UDC", O_RDWR) = 3 [pid 5622] write(3, "dummy_udc.0\n", 12) = -1 EBUSY (Device or resource busy) [pid 5622] exit_group(0) = ? [ 100.172794][ C0] exc_invalid_op+0x1a/0x50 [ 100.177336][ C0] asm_exc_invalid_op+0x1a/0x20 [ 100.182253][ C0] RIP: 0010:usb_ep_enable+0x1bc/0x480 [ 100.187666][ C0] Code: 2a d9 f8 fa 49 83 3f 00 48 c7 c0 40 e6 21 8c 49 c7 c0 60 e6 21 8c 4c 0f 44 c0 4c 89 f7 48 c7 c6 cf 20 b4 8d 44 89 ea 4c 89 e1 <67> 48 0f b9 3a bd ea ff ff ff 0f 1f 44 00 00 e8 d0 13 8c fa 65 8b [ 100.207303][ C0] RSP: 0018:ffffc900001576b8 EFLAGS: 00010282 [ 100.213419][ C0] RAX: ffffffff8c21e640 RBX: ffff888028244120 RCX: ffffffff8c2204c0 [pid 5622] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5622, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [ 100.221456][ C0] RDX: 0000000000000081 RSI: ffffffff8db420cf RDI: ffffffff90bf0350 [ 100.229463][ C0] RBP: dffffc0000000000 R08: ffffffff8c21e660 R09: 0000000000000100 [ 100.237494][ C0] R10: 0000000000000100 R11: 0000000000000003 R12: ffffffff8c2204c0 [ 100.245501][ C0] R13: 0000000000000081 R14: ffffffff90bf0350 R15: ffff888028244138 [ 100.253533][ C0] ? usb_ep_enable+0x12f/0x480 [ 100.258341][ C0] hidg_set_alt+0x12a/0xa50 [ 100.262902][ C0] ? rcu_is_watching+0x16/0xb0 [ 100.267713][ C0] set_config+0x749/0x1160 [ 100.272195][ C0] composite_setup+0x1de7/0x3480 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5623 attached , child_tidptr=0x55556c9f06d0) = 5623 [pid 5609] rt_sigprocmask(SIG_SETMASK, [] [pid 5623] set_robust_list(0x55556c9f06e0, 24 [pid 5609] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5623] <... set_robust_list resumed>) = 0 [pid 5623] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [ 100.277193][ C0] configfs_composite_setup+0xbd/0x100 [ 100.282732][ C0] dummy_timer+0x2f5d/0x4d30 [ 100.287393][ C0] ? rtlock_slowlock_locked+0xfb/0x3c20 [ 100.293002][ C0] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 100.298441][ C0] ? __pfx_dummy_timer+0x10/0x10 [ 100.303425][ C0] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 100.309296][ C0] ? __pfx_dummy_timer+0x10/0x10 [ 100.314291][ C0] __hrtimer_run_queues+0x3eb/0xaf0 [ 100.319559][ C0] hrtimer_run_softirq+0x1e1/0x2e0 [pid 5623] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5623] setpgid(0, 0) = 0 [pid 5623] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5623] write(3, "1000", 4) = 4 [pid 5623] close(3) = 0 [pid 5623] write(1, "executing program\n", 18) = 18 executing program [pid 5623] mkdirat(AT_FDCWD, "./config", 0777) = -1 EEXIST (File exists) [pid 5623] mount(NULL, "./config", "configfs", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5623] mkdirat(AT_FDCWD, "./config/usb_gadget/g1", 0777) = -1 EEXIST (File exists) [pid 5623] mkdirat(AT_FDCWD, "./config/usb_gadget/g1/configs/c.1", 0777) = -1 EEXIST (File exists) [pid 5623] mkdirat(AT_FDCWD, "./config/usb_gadget/g1/functions/hid.usb0", 0777) = -1 EEXIST (File exists) [ 100.324744][ C0] handle_softirqs+0x1da/0x6d0 [ 100.329565][ C0] ? smpboot_thread_fn+0x4e/0xa70 [ 100.334667][ C0] run_ktimerd+0x6a/0x100 [ 100.339044][ C0] smpboot_thread_fn+0x565/0xa70 [ 100.344054][ C0] ? smpboot_thread_fn+0x4e/0xa70 [ 100.349144][ C0] kthread+0x38b/0x470 [ 100.353267][ C0] ? __pfx_smpboot_thread_fn+0x10/0x10 [ 100.358794][ C0] ? __pfx_kthread+0x10/0x10 [ 100.363437][ C0] ret_from_fork+0x514/0xb70 [ 100.368074][ C0] ? __pfx_ret_from_fork+0x10/0x10 [ 100.373229][ C0] ? __switch_to+0xc89/0x1420 [pid 5623] symlinkat("./config/usb_gadget/g1/functions/hid.usb0", AT_FDCWD, "./config/usb_gadget/g1/configs/c.1/hid.usb0") = -1 EEXIST (File exists) [ 100.377972][ C0] ? __pfx_kthread+0x10/0x10 [ 100.382611][ C0] ret_from_fork_asm+0x1a/0x30 [ 100.387441][ C0] [ 100.391107][ C0] Kernel Offset: disabled [ 100.395452][ C0] Rebooting in 86400 seconds..