ci2-upstream-fs/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-upstream-fs/syz-executor998259853 <...> no interfaces have a carrier [ 54.727222][ T5249] 8021q: adding VLAN 0 to HW filter on device bond0 [ 54.777691][ T5249] eql: remember to turn off Van-Jacobson compression on your slave devices Starting crond: OK Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.18' (ED25519) to the list of known hosts. execve("ci2-upstream-fs/syz-executor998259853", ["ci2-upstream-fs/syz-executor998259853"], 0x7ffce71a7fa0 /* 10 vars */) = 0 brk(NULL) = 0x55555f6d6000 brk(0x55555f6d6d80) = 0x55555f6d6d80 arch_prctl(ARCH_SET_FS, 0x55555f6d6400) = 0 set_tid_address(0x55555f6d66d0) = 5599 set_robust_list(0x55555f6d66e0, 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-executor998259853", 4096) = 43 getrandom("\xba\xc1\xbe\x53\xab\xa4\x73\x83", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555f6d6d80 brk(0x55555f6f7d80) = 0x55555f6f7d80 brk(0x55555f6f8000) = 0x55555f6f8000 mprotect(0x7f4944961000, 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 5600 attached [pid 5600] set_robust_list(0x55555f6d66e0, 24 [pid 5599] <... clone resumed>, child_tidptr=0x55555f6d66d0) = 5600 [pid 5600] <... set_robust_list resumed>) = 0 [pid 5599] rt_sigprocmask(SIG_SETMASK, [] [pid 5600] rt_sigprocmask(SIG_SETMASK, [] [pid 5599] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5600] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5600] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5600] setpgid(0, 0) = 0 [pid 5600] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5600] write(3, "1000", 4) = 4 [pid 5600] close(3) = 0 [pid 5600] write(1, "executing program\n", 18) = 18 executing program [pid 5600] mkdirat(AT_FDCWD, "./config", 0777) = 0 [pid 5600] mount(NULL, "./config", "configfs", 0, NULL) = 0 [pid 5600] mkdirat(AT_FDCWD, "./config/usb_gadget/g1", 0777) = 0 [pid 5600] mkdirat(AT_FDCWD, "./config/usb_gadget/g1/configs/c1.1", 0777) = 0 [pid 5600] mkdirat(AT_FDCWD, "./config/usb_gadget/g1/functions/hid.usb0", 0777) = 0 [pid 5600] symlinkat("./config/usb_gadget/g1/functions/hid.usb0", AT_FDCWD, "./config/usb_gadget/g1/configs/c1.1/hid.usb0") = 0 [pid 5600] openat(AT_FDCWD, "./config/usb_gadget/g1/UDC", O_WRONLY) = 3 [pid 5600] write(3, "dummy_udc.0", 11) = 11 [pid 5600] exit_group(0) = ? [pid 5600] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5600, si_uid=0, si_status=0, si_utime=0, si_stime=6 /* 0.06 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 5603 attached , child_tidptr=0x55555f6d66d0) = 5603 [pid 5599] rt_sigprocmask(SIG_SETMASK, [] [pid 5603] set_robust_list(0x55555f6d66e0, 24) = 0 [pid 5599] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5603] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5603] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5603] setpgid(0, 0) = 0 [pid 5603] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5603] write(3, "1000", 4) = 4 [pid 5603] close(3) = 0 executing program [pid 5603] write(1, "executing program\n", 18) = 18 [pid 5603] mkdirat(AT_FDCWD, "./config", 0777) = -1 EEXIST (File exists) [pid 5603] mount(NULL, "./config", "configfs", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5603] mkdirat(AT_FDCWD, "./config/usb_gadget/g1", 0777) = -1 EEXIST (File exists) [pid 5603] mkdirat(AT_FDCWD, "./config/usb_gadget/g1/configs/c1.1", 0777) = -1 EEXIST (File exists) [pid 5603] mkdirat(AT_FDCWD, "./config/usb_gadget/g1/functions/hid.usb0", 0777) = -1 EEXIST (File exists) [pid 5603] symlinkat("./config/usb_gadget/g1/functions/hid.usb0", AT_FDCWD, "./config/usb_gadget/g1/configs/c1.1/hid.usb0") = -1 EEXIST (File exists) [pid 5603] openat(AT_FDCWD, "./config/usb_gadget/g1/UDC", O_WRONLY) = 3 [pid 5603] write(3, "dummy_udc.0", 11) = -1 EBUSY (Device or resource busy) [pid 5603] exit_group(0) = ? [pid 5603] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5603, 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 5604 attached , child_tidptr=0x55555f6d66d0) = 5604 [pid 5604] set_robust_list(0x55555f6d66e0, 24 [pid 5599] rt_sigprocmask(SIG_SETMASK, [] [pid 5604] <... set_robust_list resumed>) = 0 [pid 5599] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5604] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5604] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5604] setpgid(0, 0) = 0 [pid 5604] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5604] write(3, "1000", 4) = 4 [pid 5604] close(3) = 0 syzkaller login: [ 82.539398][ T10] usb 1-1: new high-speed USB device number 2 using dummy_hcd [pid 5604] write(1, "executing program\n", 18) = 18 executing program [pid 5604] mkdirat(AT_FDCWD, "./config", 0777) = -1 EEXIST (File exists) [pid 5604] mount(NULL, "./config", "configfs", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5604] mkdirat(AT_FDCWD, "./config/usb_gadget/g1", 0777) = -1 EEXIST (File exists) [pid 5604] mkdirat(AT_FDCWD, "./config/usb_gadget/g1/configs/c1.1", 0777) = -1 EEXIST (File exists) [pid 5604] mkdirat(AT_FDCWD, "./config/usb_gadget/g1/functions/hid.usb0", 0777) = -1 EEXIST (File exists) [pid 5604] symlinkat("./config/usb_gadget/g1/functions/hid.usb0", AT_FDCWD, "./config/usb_gadget/g1/configs/c1.1/hid.usb0") = -1 EEXIST (File exists) [pid 5604] openat(AT_FDCWD, "./config/usb_gadget/g1/UDC", O_WRONLY) = 3 [pid 5604] write(3, "dummy_udc.0", 11) = -1 EBUSY (Device or resource busy) [pid 5604] exit_group(0) = ? [pid 5604] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5604, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 82.689673][ T10] usb 1-1: New USB device found, idVendor=0000, idProduct=0000, bcdDevice= 7.02 [ 82.696179][ T10] usb 1-1: config 1 interface 0 altsetting 0 endpoint 0x81 has invalid wMaxPacketSize 0 [ 82.696208][ T10] usb 1-1: config 1 interface 0 altsetting 0 endpoint 0x2 has invalid wMaxPacketSize 0 [ 82.696242][ T10] usb 1-1: Dual-Role OTG device on HNP port [ 82.696658][ T10] usb 1-1: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 82.740962][ C0] ------------[ cut here ]------------ [ 82.740985][ C0] usb_ep_enable: ep129 (ep1in-bulk) has maxpacket 0 [ 82.741009][ C0] WARNING: drivers/usb/gadget/udc/core.c:125 at usb_ep_enable+0x148/0x480, CPU#0: ktimers/0/16 [ 82.741069][ C0] Modules linked in: [ 82.741111][ C0] CPU: 0 UID: 0 PID: 16 Comm: ktimers/0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 82.741138][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 82.741151][ C0] RIP: 0010:usb_ep_enable+0x1bc/0x480 [ 82.741175][ C0] Code: 9a 2e 04 fb 49 83 3f 00 48 c7 c0 a0 6b 1f 8c 49 c7 c0 c0 6b 1f 8c 4c 0f 44 c0 4c 89 f7 48 c7 c6 c5 fb af 8d 44 89 ea 4c 89 e1 <67> 48 0f b9 3a bd ea ff ff ff 0f 1f 44 00 00 e8 c0 b7 9a fa 65 8b [ 82.741192][ C0] RSP: 0018:ffffc900001576b8 EFLAGS: 00010286 [ 82.741210][ C0] RAX: ffffffff8c1f6ba0 RBX: ffff888027ccc120 RCX: ffffffff8c1f8a20 [ 82.741226][ C0] RDX: 0000000000000081 RSI: ffffffff8daffbc5 RDI: ffffffff8fbc58f0 [ 82.741240][ C0] RBP: dffffc0000000000 R08: ffffffff8c1f6bc0 R09: 0000000000000100 [ 82.741255][ C0] R10: 0000000000000100 R11: 0000000000000003 R12: ffffffff8c1f8a20 [ 82.741269][ C0] R13: 0000000000000081 R14: ffffffff8fbc58f0 R15: ffff888027ccc138 [ 82.741284][ C0] FS: 0000000000000000(0000) GS:ffff888125c45000(0000) knlGS:0000000000000000 [ 82.741302][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 82.741316][ C0] CR2: 00007f8a96dfd5e0 CR3: 0000000028d08000 CR4: 00000000003526f0 [ 82.741338][ C0] Call Trace: [ 82.741346][ C0] [ 82.741359][ C0] hidg_set_alt+0x12a/0xa50 [ 82.741383][ C0] ? rcu_is_watching+0x15/0xb0 [ 82.741419][ C0] set_config+0x749/0x1160 [ 82.741456][ C0] composite_setup+0x1de7/0x3480 [ 82.741492][ C0] configfs_composite_setup+0xbd/0x100 [ 82.741520][ C0] dummy_timer+0x2f77/0x4d50 [ 82.741566][ C0] ? rtlock_slowlock_locked+0xfb/0x3c20 [ 82.741630][ C0] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 82.741671][ C0] ? __pfx_dummy_timer+0x10/0x10 [ 82.741701][ C0] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 82.741732][ C0] ? __pfx_dummy_timer+0x10/0x10 [ 82.741760][ C0] __hrtimer_run_queues+0x3eb/0xaf0 [ 82.741811][ C0] hrtimer_run_softirq+0x18f/0x260 [ 82.741846][ C0] handle_softirqs+0x1d9/0x6c0 [ 82.741883][ C0] run_ktimerd+0x69/0x100 [ 82.741910][ C0] smpboot_thread_fn+0x57c/0xa80 [ 82.741939][ C0] ? smpboot_thread_fn+0x4e/0xa80 [ 82.741974][ C0] kthread+0x388/0x470 [ 82.742009][ C0] ? __pfx_smpboot_thread_fn+0x10/0x10 [ 82.742034][ C0] ? __pfx_kthread+0x10/0x10 [ 82.742062][ C0] ret_from_fork+0x514/0xb70 [ 82.742096][ C0] ? __pfx_ret_from_fork+0x10/0x10 [ 82.742127][ C0] ? __switch_to+0xc89/0x1420 [ 82.742157][ C0] ? __pfx_kthread+0x10/0x10 [ 82.742187][ C0] ret_from_fork_asm+0x1a/0x30 [ 82.742238][ C0] [ 82.742249][ C0] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 82.742263][ C0] CPU: 0 UID: 0 PID: 16 Comm: ktimers/0 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 82.742285][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 82.742296][ C0] Call Trace: [ 82.742304][ C0] [ 82.742312][ C0] vpanic+0x56c/0xa60 [ 82.742345][ C0] ? __pfx__printk+0x10/0x10 [ 82.742368][ C0] ? __pfx_vpanic+0x10/0x10 [ 82.742396][ C0] ? is_bpf_text_address+0x292/0x2b0 [ 82.742419][ C0] ? is_bpf_text_address+0x26/0x2b0 [ 82.742452][ C0] panic+0xc5/0xd0 [ 82.742481][ C0] ? __pfx_panic+0x10/0x10 [ 82.742522][ C0] ? ret_from_fork_asm+0x1a/0x30 [ 82.742560][ C0] __warn+0x315/0x4c0 [ 82.742588][ C0] ? usb_ep_enable+0x148/0x480 [ 82.742614][ C0] ? usb_ep_enable+0x148/0x480 [ 82.742636][ C0] __report_bug+0x276/0x570 [ 82.742671][ C0] ? usb_ep_enable+0x148/0x480 [ 82.742697][ C0] ? __pfx___report_bug+0x10/0x10 [ 82.742749][ C0] report_bug_entry+0x19a/0x290 [ 82.742781][ C0] ? usb_ep_enable+0x1bc/0x480 [ 82.742800][ C0] ? usb_ep_enable+0x1c1/0x480 [ 82.742821][ C0] handle_bug+0xce/0x200 [ 82.742844][ C0] exc_invalid_op+0x1a/0x50 [ 82.742864][ C0] asm_exc_invalid_op+0x1a/0x20 [ 82.742885][ C0] RIP: 0010:usb_ep_enable+0x1bc/0x480 [ 82.742907][ C0] Code: 9a 2e 04 fb 49 83 3f 00 48 c7 c0 a0 6b 1f 8c 49 c7 c0 c0 6b 1f 8c 4c 0f 44 c0 4c 89 f7 48 c7 c6 c5 fb af 8d 44 89 ea 4c 89 e1 <67> 48 0f b9 3a bd ea ff ff ff 0f 1f 44 00 00 e8 c0 b7 9a fa 65 8b [ 82.742924][ C0] RSP: 0018:ffffc900001576b8 EFLAGS: 00010286 [ 82.742941][ C0] RAX: ffffffff8c1f6ba0 RBX: ffff888027ccc120 RCX: ffffffff8c1f8a20 [ 82.742957][ C0] RDX: 0000000000000081 RSI: ffffffff8daffbc5 RDI: ffffffff8fbc58f0 [ 82.742973][ C0] RBP: dffffc0000000000 R08: ffffffff8c1f6bc0 R09: 0000000000000100 [ 82.742993][ C0] R10: 0000000000000100 R11: 0000000000000003 R12: ffffffff8c1f8a20 [ 82.743006][ C0] R13: 0000000000000081 R14: ffffffff8fbc58f0 R15: ffff888027ccc138 [ 82.743039][ C0] ? usb_ep_enable+0x12f/0x480 [ 82.743063][ C0] hidg_set_alt+0x12a/0xa50 [ 82.743080][ C0] ? rcu_is_watching+0x15/0xb0 [ 82.743106][ C0] set_config+0x749/0x1160 [ 82.743138][ C0] composite_setup+0x1de7/0x3480 [ 82.743174][ C0] configfs_composite_setup+0xbd/0x100 [ 82.743204][ C0] dummy_timer+0x2f77/0x4d50 [ 82.743251][ C0] ? rtlock_slowlock_locked+0xfb/0x3c20 [ 82.743307][ C0] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 82.743349][ C0] ? __pfx_dummy_timer+0x10/0x10 [ 82.743382][ C0] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 82.743430][ C0] ? __pfx_dummy_timer+0x10/0x10 [ 82.743459][ C0] __hrtimer_run_queues+0x3eb/0xaf0 [ 82.743510][ C0] hrtimer_run_softirq+0x18f/0x260 [ 82.743547][ C0] handle_softirqs+0x1d9/0x6c0 [ 82.743584][ C0] run_ktimerd+0x69/0x100 [ 82.743612][ C0] smpboot_thread_fn+0x57c/0xa80 [ 82.743644][ C0] ? smpboot_thread_fn+0x4e/0xa80 [ 82.743681][ C0] kthread+0x388/0x470 [ 82.743712][ C0] ? __pfx_smpboot_thread_fn+0x10/0x10 [ 82.743738][ C0] ? __pfx_kthread+0x10/0x10 [ 82.743770][ C0] ret_from_fork+0x514/0xb70 [ 82.743806][ C0] ? __pfx_ret_from_fork+0x10/0x10 [ 82.743836][ C0] ? __switch_to+0xc89/0x1420 [ 82.743867][ C0] ? __pfx_kthread+0x10/0x10 [ 82.743897][ C0] ret_from_fork_asm+0x1a/0x30 [ 82.743940][ C0] [ 82.744211][ C0] Kernel Offset: disabled