ci2-android-6-1/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-6-1/syz-executor322605284 <...> Warning: Permanently added '10.128.0.227' (ED25519) to the list of known hosts. execve("ci2-android-6-1/syz-executor322605284", ["ci2-android-6-1/syz-executor322605284"], 0x7ffdde99ae20 /* 10 vars */) = 0 brk(NULL) = 0x55555d11b000 brk(0x55555d11bd40) = 0x55555d11bd40 arch_prctl(ARCH_SET_FS, 0x55555d11b3c0) = 0 set_tid_address(0x55555d11b690) = 305 set_robust_list(0x55555d11b6a0, 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}, 32, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlinkat(AT_FDCWD, "/proc/self/exe", "/root/ci2-android-6-1/syz-executor322605284", 4096) = 43 getrandom("\xbe\x3c\xea\x1d\xf0\x2f\x1a\x40", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555d11bd40 brk(0x55555d13cd40) = 0x55555d13cd40 brk(0x55555d13d000) = 0x55555d13d000 mprotect(0x7f27d3bbf000, 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 getrandom("\x19\x5f\x6e\x4f\x0b\xd3\xff\xc5", 8, GRND_NONBLOCK) = 8 mkdir("./syzkaller.DG5dly", 0700) = 0 chmod("./syzkaller.DG5dly", 0777) = 0 chdir("./syzkaller.DG5dly") = 0 unshare(CLONE_NEWPID) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555d11b690) = 306 ci2-android-6-1/strace-static-x86_64: Process 306 attached [pid 305] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 306] set_robust_list(0x55555d11b6a0, 24) = 0 [pid 306] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 306] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 306] getppid() = 0 [pid 306] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 306] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 306] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 306] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 306] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 306] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 306] unshare(CLONE_NEWNS) = 0 [pid 306] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 306] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 306] unshare(CLONE_NEWCGROUP) = 0 [pid 306] unshare(CLONE_NEWUTS) = 0 [pid 306] unshare(CLONE_SYSVSEM) = 0 [pid 306] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 306] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 306] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 306] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 306] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 306] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 306] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 306] getpid() = 1 [pid 306] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b eb 86 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 5e ff ff ff 4c [ 30.383365][ T306] RSP: 0018:ffffc90000e67b60 EFLAGS: 00010293 [ 30.389563][ T306] RAX: ffffffff81c63ee5 RBX: ffff88810fa28448 RCX: ffff888125873cc0 [ 30.397663][ T306] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 30.405688][ T306] RBP: ffffc90000e67b88 R08: 0000000000000003 R09: 0000000000000004 [ 30.413850][ T306] R10: dffffc0000000000 R11: fffff520001ccf5c R12: dffffc0000000000 [ 30.421856][ T306] R13: 1ffff11021f45092 R14: ffff88810fa28490 R15: 0000000000000000 [ 30.429865][ T306] FS: 000055555d11b3c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 30.438899][ T306] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.445580][ T306] CR2: 0000558a13a6b758 CR3: 0000000120de7000 CR4: 00000000003506b0 [ 30.453613][ T306] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.461608][ T306] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.469635][ T306] Call Trace: [ 30.472932][ T306] [ 30.475866][ T306] shmem_rmdir+0x5b/0x90 [ 30.480142][ T306] vfs_rmdir+0x381/0x4f0 [ 30.484425][ T306] incfs_kill_sb+0xfe/0x210 [ 30.489255][ T306] deactivate_locked_super+0xb5/0x120 [ 30.494644][ T306] deactivate_super+0xaf/0xe0 [ 30.499346][ T306] cleanup_mnt+0x45e/0x4e0 [ 30.503772][ T306] __cleanup_mnt+0x19/0x20 [ 30.508182][ T306] task_work_run+0x1e1/0x250 [ 30.512796][ T306] ? __cfi_task_work_run+0x10/0x10 [ 30.518011][ T306] ? path_umount+0x345/0xf60 [ 30.522614][ T306] ? __kasan_slab_free+0x11/0x20 [ 30.527650][ T306] ptrace_notify+0x23f/0x270 [ 30.532256][ T306] ? __cfi_path_umount+0x10/0x10 [ 30.537232][ T306] ? __cfi_ptrace_notify+0x10/0x10 [ 30.542650][ T306] ? user_path_at_empty+0x162/0x1c0 [ 30.547896][ T306] ? __x64_sys_umount+0x12d/0x170 [ 30.553414][ T306] ? __cfi___x64_sys_umount+0x10/0x10 [ 30.559008][ T306] ? fpregs_restore_userregs+0x128/0x260 [ 30.564651][ T306] syscall_exit_work+0x84/0x140 [ 30.569520][ T306] syscall_exit_to_user_mode_prepare+0x1c/0x20 [ 30.575777][ T306] syscall_exit_to_user_mode+0xd/0x30 [ 30.581163][ T306] do_syscall_64+0x58/0xa0 [ 30.585613][ T306] ? clear_bhb_loop+0x30/0x80 [ 30.590298][ T306] ? clear_bhb_loop+0x30/0x80 [ 30.594991][ T306] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 30.600899][ T306] RIP: 0033:0x7f27d3b2c527 [ 30.605320][ T306] Code: bf 41 4d 56 53 b8 9d 00 00 00 0f 05 83 f8 ea 75 a2 c7 05 64 85 09 00 00 00 00 00 eb 96 e8 b1 05 00 00 90 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 d8 ff ff ff f7 d8 64 89 02 b8 [ 30.625066][ T306] RSP: 002b:00007fff67b96b08 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 30.633605][ T306] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f27d3b2c527 [ 30.641603][ T306] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff67b96bc0 [ 30.649769][ T306] RBP: 00007fff67b96bc0 R08: 00007fff67b97bc0 R09: 00000000ffffffff [ 30.657769][ T306] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fff67b97c30 [ 30.665854][ T306] R13: 000055555d11c720 R14: 00007fff67b97c30 R15: 0000000000000001 [ 30.673848][ T306] [ 30.676857][ T306] ---[ end trace 0000000000000000 ]--- [ 30.682654][ T306] ================================================================== [ 30.690917][ T306] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60 [ 30.697161][ T306] Write of size 4 at addr 0000000000000170 by task syz-executor322/306 [ 30.705382][ T306] [ 30.707699][ T306] CPU: 0 PID: 306 Comm: syz-executor322 Tainted: G W syzkaller #0 [ 30.716881][ T306] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 30.726926][ T306] Call Trace: [ 30.730197][ T306] [ 30.733119][ T306] __dump_stack+0x21/0x24 [ 30.737457][ T306] dump_stack_lvl+0x110/0x170 [ 30.742123][ T306] ? __cfi_dump_stack_lvl+0x8/0x8 [ 30.747226][ T306] ? __cfi_call_rcu+0x10/0x10 [ 30.751894][ T306] ? ihold+0x20/0x60 [ 30.755795][ T306] ? ihold+0x20/0x60 [ 30.759694][ T306] print_report+0x3d/0x60 [ 30.764118][ T306] kasan_report+0x122/0x150 [ 30.768615][ T306] ? ihold+0x20/0x60 [ 30.772501][ T306] kasan_check_range+0x249/0x2a0 [ 30.777431][ T306] __kasan_check_write+0x14/0x20 [ 30.782379][ T306] ihold+0x20/0x60 [ 30.786195][ T306] vfs_rmdir+0x24c/0x4f0 [ 30.790446][ T306] incfs_kill_sb+0xfe/0x210 [ 30.794941][ T306] deactivate_locked_super+0xb5/0x120 [ 30.800402][ T306] deactivate_super+0xaf/0xe0 [ 30.805114][ T306] cleanup_mnt+0x45e/0x4e0 [ 30.809527][ T306] __cleanup_mnt+0x19/0x20 [ 30.813931][ T306] task_work_run+0x1e1/0x250 [ 30.818512][ T306] ? __cfi_task_work_run+0x10/0x10 [ 30.823614][ T306] ? path_umount+0x345/0xf60 [ 30.828298][ T306] ? __kasan_slab_free+0x11/0x20 [ 30.833225][ T306] ptrace_notify+0x23f/0x270 [ 30.837806][ T306] ? __cfi_path_umount+0x10/0x10 [ 30.842741][ T306] ? __cfi_ptrace_notify+0x10/0x10 [ 30.847860][ T306] ? user_path_at_empty+0x162/0x1c0 [ 30.853180][ T306] ? __x64_sys_umount+0x12d/0x170 [ 30.858208][ T306] ? __cfi___x64_sys_umount+0x10/0x10 [ 30.863585][ T306] ? fpregs_restore_userregs+0x128/0x260 [ 30.869213][ T306] syscall_exit_work+0x84/0x140 [ 30.874055][ T306] syscall_exit_to_user_mode_prepare+0x1c/0x20 [ 30.880200][ T306] syscall_exit_to_user_mode+0xd/0x30 [ 30.885583][ T306] do_syscall_64+0x58/0xa0 [ 30.889986][ T306] ? clear_bhb_loop+0x30/0x80 [ 30.894650][ T306] ? clear_bhb_loop+0x30/0x80 [ 30.899322][ T306] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 30.905224][ T306] RIP: 0033:0x7f27d3b2c527 [ 30.909640][ T306] Code: bf 41 4d 56 53 b8 9d 00 00 00 0f 05 83 f8 ea 75 a2 c7 05 64 85 09 00 00 00 00 00 eb 96 e8 b1 05 00 00 90 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 d8 ff ff ff f7 d8 64 89 02 b8 [ 30.929853][ T306] RSP: 002b:00007fff67b96b08 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 30.938280][ T306] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f27d3b2c527 [ 30.946250][ T306] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff67b96bc0 [ 30.954221][ T306] RBP: 00007fff67b96bc0 R08: 00007fff67b97bc0 R09: 00000000ffffffff [ 30.962363][ T306] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fff67b97c30 [ 30.970336][ T306] R13: 000055555d11c720 R14: 00007fff67b97c30 R15: 0000000000000001 [ 30.978309][ T306] [ 30.981375][ T306] ================================================================== [ 30.989711][ T306] Disabling lock debugging due to kernel taint [ 30.995950][ T306] BUG: kernel NULL pointer dereference, address: 0000000000000170 [ 31.003759][ T306] #PF: supervisor write access in kernel mode [ 31.009826][ T306] #PF: error_code(0x0002) - not-present page [ 31.015799][ T306] PGD 0 P4D 0 [ 31.019206][ T306] Oops: 0002 [#1] PREEMPT SMP KASAN [ 31.024401][ T306] CPU: 0 PID: 306 Comm: syz-executor322 Tainted: G B W syzkaller #0 [ 31.033603][ T306] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 31.043689][ T306] RIP: 0010:ihold+0x26/0x60 [ 31.048198][ T306] Code: 33 36 7c df 55 48 89 e5 41 56 53 48 89 fb e8 c1 1e ab ff 48 8d bb 70 01 00 00 be 04 00 00 00 e8 00 ac f0 ff 41 be 01 00 00 00 44 0f c1 b3 70 01 00 00 41 ff c6 bf 02 00 00 00 44 89 f6 e8 b1 [ 31.067892][ T306] RSP: 0018:ffffc90000e67ba0 EFLAGS: 00010246 [ 31.074046][ T306] RAX: ffff888125873c00 RBX: 0000000000000000 RCX: ffff888125873cc0 [ 31.082016][ T306] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 31.089982][ T306] RBP: ffffc90000e67bb0 R08: ffffffff87b757e7 R09: 1ffffffff0f6eafc [ 31.097971][ T306] R10: dffffc0000000000 R11: fffffbfff0f6eafd R12: ffff88810fa28454 [ 31.105964][ T306] R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000000 [ 31.113947][ T306] FS: 000055555d11b3c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 31.122973][ T306] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 31.129560][ T306] CR2: 0000000000000170 CR3: 0000000120de7000 CR4: 00000000003506b0 [ 31.137556][ T306] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.145526][ T306] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.153497][ T306] Call Trace: [ 31.156772][ T306] [ 31.159790][ T306] vfs_rmdir+0x24c/0x4f0 [ 31.164042][ T306] incfs_kill_sb+0xfe/0x210 [ 31.168727][ T306] deactivate_locked_super+0xb5/0x120 [ 31.174102][ T306] deactivate_super+0xaf/0xe0 [ 31.178780][ T306] cleanup_mnt+0x45e/0x4e0 [ 31.183200][ T306] __cleanup_mnt+0x19/0x20 [ 31.187612][ T306] task_work_run+0x1e1/0x250 [ 31.192208][ T306] ? __cfi_task_work_run+0x10/0x10 [ 31.197333][ T306] ? path_umount+0x345/0xf60 [ 31.201924][ T306] ? __kasan_slab_free+0x11/0x20 [ 31.206863][ T306] ptrace_notify+0x23f/0x270 [ 31.211456][ T306] ? __cfi_path_umount+0x10/0x10 [ 31.216483][ T306] ? __cfi_ptrace_notify+0x10/0x10 [ 31.221684][ T306] ? user_path_at_empty+0x162/0x1c0 [ 31.227091][ T306] ? __x64_sys_umount+0x12d/0x170 [ 31.232115][ T306] ? __cfi___x64_sys_umount+0x10/0x10 [ 31.237488][ T306] ? fpregs_restore_userregs+0x128/0x260 [ 31.243122][ T306] syscall_exit_work+0x84/0x140 [ 31.247970][ T306] syscall_exit_to_user_mode_prepare+0x1c/0x20 [ 31.254123][ T306] syscall_exit_to_user_mode+0xd/0x30 [ 31.259492][ T306] do_syscall_64+0x58/0xa0 [ 31.263910][ T306] ? clear_bhb_loop+0x30/0x80 [ 31.268865][ T306] ? clear_bhb_loop+0x30/0x80 [ 31.273540][ T306] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 31.279524][ T306] RIP: 0033:0x7f27d3b2c527 [ 31.283946][ T306] Code: bf 41 4d 56 53 b8 9d 00 00 00 0f 05 83 f8 ea 75 a2 c7 05 64 85 09 00 00 00 00 00 eb 96 e8 b1 05 00 00 90 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 d8 ff ff ff f7 d8 64 89 02 b8 [ 31.303557][ T306] RSP: 002b:00007fff67b96b08 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 31.312078][ T306] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f27d3b2c527 [ 31.320057][ T306] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff67b96bc0 [ 31.328126][ T306] RBP: 00007fff67b96bc0 R08: 00007fff67b97bc0 R09: 00000000ffffffff [ 31.336092][ T306] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fff67b97c30 [ 31.344058][ T306] R13: 000055555d11c720 R14: 00007fff67b97c30 R15: 0000000000000001 [ 31.352054][ T306] [ 31.355073][ T306] Modules linked in: [ 31.358960][ T306] CR2: 0000000000000170 [ 31.363106][ T306] ---[ end trace 0000000000000000 ]--- [ 31.368642][ T306] RIP: 0010:ihold+0x26/0x60 [ 31.373150][ T306] Code: 33 36 7c df 55 48 89 e5 41 56 53 48 89 fb e8 c1 1e ab ff 48 8d bb 70 01 00 00 be 04 00 00 00 e8 00 ac f0 ff 41 be 01 00 00 00 44 0f c1 b3 70 01 00 00 41 ff c6 bf 02 00 00 00 44 89 f6 e8 b1 [ 31.392838][ T306] RSP: 0018:ffffc90000e67ba0 EFLAGS: 00010246 [ 31.398900][ T306] RAX: ffff888125873c00 RBX: 0000000000000000 RCX: ffff888125873cc0 [ 31.406868][ T306] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 31.414833][ T306] RBP: ffffc90000e67bb0 R08: ffffffff87b757e7 R09: 1ffffffff0f6eafc [ 31.422818][ T306] R10: dffffc0000000000 R11: fffffbfff0f6eafd R12: ffff88810fa28454 [ 31.430792][ T306] R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000000 [ 31.438848][ T306] FS: 000055555d11b3c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 31.448059][ T306] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 31.454642][ T306] CR2: 0000000000000170 CR3: 0000000120de7000 CR4: 00000000003506b0 [ 31.462625][ T306] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.470765][ T306] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.478764][ T306] Kernel panic - not syncing: Fatal exception [ 31.485090][ T306] Kernel Offset: disabled [ 31.489404][ T306] Rebooting in 86400 seconds..