ci2-android-6-1/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-6-1/syz-executor2175936133 <...> Warning: Permanently added '10.128.1.70' (ED25519) to the list of known hosts. execve("ci2-android-6-1/syz-executor2175936133", ["ci2-android-6-1/syz-executor2175936133"], 0x7fff832a8c10 /* 10 vars */) = 0 brk(NULL) = 0x55558a0bb000 brk(0x55558a0bbd40) = 0x55558a0bbd40 arch_prctl(ARCH_SET_FS, 0x55558a0bb3c0) = 0 set_tid_address(0x55558a0bb690) = 305 set_robust_list(0x55558a0bb6a0, 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-executor2175936133", 4096) = 44 getrandom("\x49\x92\xa9\x4e\xbf\xb6\xbf\xff", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558a0bbd40 brk(0x55558a0dcd40) = 0x55558a0dcd40 brk(0x55558a0dd000) = 0x55558a0dd000 mprotect(0x7f93f4e25000, 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("\x03\x27\x71\x01\xb9\x74\x30\xc7", 8, GRND_NONBLOCK) = 8 mkdir("./syzkaller.zHvH2M", 0700) = 0 chmod("./syzkaller.zHvH2M", 0777) = 0 chdir("./syzkaller.zHvH2M") = 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=0x55558a0bb690) = 306 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-6-1/strace-static-x86_64: Process 306 attached [pid 306] set_robust_list(0x55558a0bb6a0, 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 [ 25.549393][ T306] RSP: 0018:ffffc90000e47b60 EFLAGS: 00010293 [ 25.555552][ T306] RAX: ffffffff81c63ee5 RBX: ffff888110168810 RCX: ffff88810fe90000 [ 25.563545][ T306] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 25.571611][ T306] RBP: ffffc90000e47b88 R08: 0000000000000003 R09: 0000000000000004 [ 25.579662][ T306] R10: dffffc0000000000 R11: fffff520001c8f5c R12: dffffc0000000000 [ 25.587697][ T306] R13: 1ffff1102202d10b R14: ffff888110168858 R15: 0000000000000000 [ 25.595784][ T306] FS: 000055558a0bb3c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 25.604774][ T306] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.611608][ T306] CR2: 000055558a0cc798 CR3: 0000000123434000 CR4: 00000000003506a0 [ 25.619856][ T306] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.627975][ T306] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.636126][ T306] Call Trace: [ 25.639508][ T306] [ 25.642446][ T306] shmem_rmdir+0x5b/0x90 [ 25.646761][ T306] vfs_rmdir+0x381/0x4f0 [ 25.651034][ T306] incfs_kill_sb+0xfe/0x210 [ 25.655628][ T306] deactivate_locked_super+0xb5/0x120 [ 25.661028][ T306] deactivate_super+0xaf/0xe0 [ 25.665765][ T306] cleanup_mnt+0x45e/0x4e0 [ 25.670211][ T306] __cleanup_mnt+0x19/0x20 [ 25.674653][ T306] task_work_run+0x1e1/0x250 [ 25.679300][ T306] ? __cfi_task_work_run+0x10/0x10 [ 25.684435][ T306] ? path_umount+0x345/0xf60 [ 25.689086][ T306] ? __kasan_slab_free+0x11/0x20 [ 25.694052][ T306] ptrace_notify+0x23f/0x270 [ 25.698708][ T306] ? __cfi_path_umount+0x10/0x10 [ 25.703697][ T306] ? __cfi_ptrace_notify+0x10/0x10 [ 25.708872][ T306] ? user_path_at_empty+0x162/0x1c0 [ 25.714103][ T306] ? __x64_sys_umount+0x12d/0x170 [ 25.719230][ T306] ? __cfi___x64_sys_umount+0x10/0x10 [ 25.724649][ T306] ? fpregs_restore_userregs+0x128/0x260 [ 25.730379][ T306] syscall_exit_work+0x84/0x140 [ 25.735261][ T306] syscall_exit_to_user_mode_prepare+0x1c/0x20 [ 25.741525][ T306] syscall_exit_to_user_mode+0xd/0x30 [ 25.746961][ T306] do_syscall_64+0x58/0xa0 [ 25.751409][ T306] ? clear_bhb_loop+0x30/0x80 [ 25.756136][ T306] ? clear_bhb_loop+0x30/0x80 [ 25.760853][ T306] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 25.766924][ T306] RIP: 0033:0x7f93f4d92527 [ 25.771381][ 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 [ 25.791069][ T306] RSP: 002b:00007ffd99863148 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 25.799563][ T306] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f93f4d92527 [ 25.807694][ T306] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd99863200 [ 25.815727][ T306] RBP: 00007ffd99863200 R08: 00007ffd99864200 R09: 00000000ffffffff [ 25.823735][ T306] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffd99864270 [ 25.831778][ T306] R13: 000055558a0bc720 R14: 00007ffd99864270 R15: 0000000000000001 [ 25.840096][ T306] [ 25.843127][ T306] ---[ end trace 0000000000000000 ]--- [ 25.848710][ T306] ================================================================== [ 25.856781][ T306] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60 [ 25.863025][ T306] Write of size 4 at addr 0000000000000170 by task syz-executor217/306 [ 25.871261][ T306] [ 25.873603][ T306] CPU: 1 PID: 306 Comm: syz-executor217 Tainted: G W syzkaller #0 [ 25.882801][ T306] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 25.892942][ T306] Call Trace: [ 25.896237][ T306] [ 25.899180][ T306] __dump_stack+0x21/0x24 [ 25.903517][ T306] dump_stack_lvl+0x110/0x170 [ 25.908293][ T306] ? __cfi_dump_stack_lvl+0x8/0x8 [ 25.913324][ T306] ? __cfi_call_rcu+0x10/0x10 [ 25.918009][ T306] ? ihold+0x20/0x60 [ 25.921901][ T306] ? ihold+0x20/0x60 [ 25.925794][ T306] print_report+0x3d/0x60 [ 25.930121][ T306] kasan_report+0x122/0x150 [ 25.934626][ T306] ? ihold+0x20/0x60 [ 25.938517][ T306] kasan_check_range+0x249/0x2a0 [ 25.943464][ T306] __kasan_check_write+0x14/0x20 [ 25.948395][ T306] ihold+0x20/0x60 [ 25.952114][ T306] vfs_rmdir+0x24c/0x4f0 [ 25.956358][ T306] incfs_kill_sb+0xfe/0x210 [ 25.960864][ T306] deactivate_locked_super+0xb5/0x120 [ 25.966233][ T306] deactivate_super+0xaf/0xe0 [ 25.970995][ T306] cleanup_mnt+0x45e/0x4e0 [ 25.975414][ T306] __cleanup_mnt+0x19/0x20 [ 25.979847][ T306] task_work_run+0x1e1/0x250 [ 25.984456][ T306] ? __cfi_task_work_run+0x10/0x10 [ 25.989571][ T306] ? path_umount+0x345/0xf60 [ 25.994172][ T306] ? __kasan_slab_free+0x11/0x20 [ 25.999110][ T306] ptrace_notify+0x23f/0x270 [ 26.003711][ T306] ? __cfi_path_umount+0x10/0x10 [ 26.008653][ T306] ? __cfi_ptrace_notify+0x10/0x10 [ 26.013780][ T306] ? user_path_at_empty+0x162/0x1c0 [ 26.019063][ T306] ? __x64_sys_umount+0x12d/0x170 [ 26.024089][ T306] ? __cfi___x64_sys_umount+0x10/0x10 [ 26.029475][ T306] ? fpregs_restore_userregs+0x128/0x260 [ 26.035107][ T306] syscall_exit_work+0x84/0x140 [ 26.039956][ T306] syscall_exit_to_user_mode_prepare+0x1c/0x20 [ 26.046114][ T306] syscall_exit_to_user_mode+0xd/0x30 [ 26.051592][ T306] do_syscall_64+0x58/0xa0 [ 26.056014][ T306] ? clear_bhb_loop+0x30/0x80 [ 26.060698][ T306] ? clear_bhb_loop+0x30/0x80 [ 26.065387][ T306] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 26.071493][ T306] RIP: 0033:0x7f93f4d92527 [ 26.075907][ 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 [ 26.095543][ T306] RSP: 002b:00007ffd99863148 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 26.103956][ T306] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f93f4d92527 [ 26.111926][ T306] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd99863200 [ 26.119895][ T306] RBP: 00007ffd99863200 R08: 00007ffd99864200 R09: 00000000ffffffff [ 26.127865][ T306] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffd99864270 [ 26.135849][ T306] R13: 000055558a0bc720 R14: 00007ffd99864270 R15: 0000000000000001 [ 26.143850][ T306] [ 26.146899][ T306] ================================================================== [ 26.155122][ T306] Disabling lock debugging due to kernel taint [ 26.161365][ T306] BUG: kernel NULL pointer dereference, address: 0000000000000170 [ 26.169187][ T306] #PF: supervisor write access in kernel mode [ 26.175265][ T306] #PF: error_code(0x0002) - not-present page [ 26.181254][ T306] PGD 0 P4D 0 [ 26.184647][ T306] Oops: 0002 [#1] PREEMPT SMP KASAN [ 26.189852][ T306] CPU: 1 PID: 306 Comm: syz-executor217 Tainted: G B W syzkaller #0 [ 26.199050][ T306] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 26.209117][ T306] RIP: 0010:ihold+0x26/0x60 [ 26.213685][ 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 [ 26.233300][ T306] RSP: 0018:ffffc90000e47ba0 EFLAGS: 00010246 [ 26.239385][ T306] RAX: ffff88810fe90000 RBX: 0000000000000000 RCX: ffff88810fe90000 [ 26.247373][ T306] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 26.255361][ T306] RBP: ffffc90000e47bb0 R08: ffffffff87b757e7 R09: 1ffffffff0f6eafc [ 26.263348][ T306] R10: dffffc0000000000 R11: fffffbfff0f6eafd R12: ffff88811016881c [ 26.271331][ T306] R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000000 [ 26.279319][ T306] FS: 000055558a0bb3c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 26.288281][ T306] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.294875][ T306] CR2: 0000000000000170 CR3: 0000000123434000 CR4: 00000000003506a0 [ 26.302858][ T306] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.310840][ T306] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.318820][ T306] Call Trace: [ 26.322106][ T306] [ 26.325050][ T306] vfs_rmdir+0x24c/0x4f0 [ 26.329312][ T306] incfs_kill_sb+0xfe/0x210 [ 26.333834][ T306] deactivate_locked_super+0xb5/0x120 [ 26.339220][ T306] deactivate_super+0xaf/0xe0 [ 26.343911][ T306] cleanup_mnt+0x45e/0x4e0 [ 26.348336][ T306] __cleanup_mnt+0x19/0x20 [ 26.352762][ T306] task_work_run+0x1e1/0x250 [ 26.357363][ T306] ? __cfi_task_work_run+0x10/0x10 [ 26.362497][ T306] ? path_umount+0x345/0xf60 [ 26.367101][ T306] ? __kasan_slab_free+0x11/0x20 [ 26.372051][ T306] ptrace_notify+0x23f/0x270 [ 26.376657][ T306] ? __cfi_path_umount+0x10/0x10 [ 26.381637][ T306] ? __cfi_ptrace_notify+0x10/0x10 [ 26.386771][ T306] ? user_path_at_empty+0x162/0x1c0 [ 26.392014][ T306] ? __x64_sys_umount+0x12d/0x170 [ 26.397059][ T306] ? __cfi___x64_sys_umount+0x10/0x10 [ 26.402446][ T306] ? fpregs_restore_userregs+0x128/0x260 [ 26.408096][ T306] syscall_exit_work+0x84/0x140 [ 26.412957][ T306] syscall_exit_to_user_mode_prepare+0x1c/0x20 [ 26.419122][ T306] syscall_exit_to_user_mode+0xd/0x30 [ 26.424505][ T306] do_syscall_64+0x58/0xa0 [ 26.428940][ T306] ? clear_bhb_loop+0x30/0x80 [ 26.433634][ T306] ? clear_bhb_loop+0x30/0x80 [ 26.438319][ T306] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 26.444231][ T306] RIP: 0033:0x7f93f4d92527 [ 26.448658][ 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 [ 26.468269][ T306] RSP: 002b:00007ffd99863148 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 26.476696][ T306] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f93f4d92527 [ 26.484673][ T306] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd99863200 [ 26.492652][ T306] RBP: 00007ffd99863200 R08: 00007ffd99864200 R09: 00000000ffffffff [ 26.500637][ T306] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffd99864270 [ 26.508623][ T306] R13: 000055558a0bc720 R14: 00007ffd99864270 R15: 0000000000000001 [ 26.516611][ T306] [ 26.519634][ T306] Modules linked in: [ 26.523553][ T306] CR2: 0000000000000170 [ 26.527708][ T306] ---[ end trace 0000000000000000 ]--- [ 26.533164][ T306] RIP: 0010:ihold+0x26/0x60 [ 26.537687][ 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 [ 26.557305][ T306] RSP: 0018:ffffc90000e47ba0 EFLAGS: 00010246 [ 26.563386][ T306] RAX: ffff88810fe90000 RBX: 0000000000000000 RCX: ffff88810fe90000 [ 26.571364][ T306] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 26.579374][ T306] RBP: ffffc90000e47bb0 R08: ffffffff87b757e7 R09: 1ffffffff0f6eafc [ 26.587368][ T306] R10: dffffc0000000000 R11: fffffbfff0f6eafd R12: ffff88811016881c [ 26.595354][ T306] R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000000 [ 26.603340][ T306] FS: 000055558a0bb3c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 26.612370][ T306] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.618968][ T306] CR2: 0000000000000170 CR3: 0000000123434000 CR4: 00000000003506a0 [ 26.626951][ T306] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.634933][ T306] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.642918][ T306] Kernel panic - not syncing: Fatal exception [ 26.649543][ T306] Kernel Offset: disabled [ 26.653865][ T306] Rebooting in 86400 seconds..