ci2-android-5-10/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-5-10/syz-executor2889677354 <...> Warning: Permanently added '10.128.0.155' (ED25519) to the list of known hosts. execve("ci2-android-5-10/syz-executor2889677354", ["ci2-android-5-10/syz-executor2889677354"], 0x7ffd362c0cd0 /* 10 vars */) = 0 brk(NULL) = 0x5555857c8000 brk(0x5555857c8d40) = 0x5555857c8d40 arch_prctl(ARCH_SET_FS, 0x5555857c83c0) = 0 set_tid_address(0x5555857c8690) = 298 set_robust_list(0x5555857c86a0, 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-5-10/syz-executor2889677354", 4096) = 45 getrandom("\xa5\x96\x51\x6a\x98\x38\x05\xea", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555857c8d40 brk(0x5555857e9d40) = 0x5555857e9d40 brk(0x5555857ea000) = 0x5555857ea000 mprotect(0x7f2ee7f3f000, 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("\x38\x3d\x4c\x90\xe8\x18\x50\x92", 8, GRND_NONBLOCK) = 8 mkdir("./syzkaller.Wa0FtE", 0700) = 0 chmod("./syzkaller.Wa0FtE", 0777) = 0 chdir("./syzkaller.Wa0FtE") = 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=0x5555857c8690) = 299 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-5-10/strace-static-x86_64: Process 299 attached [pid 299] set_robust_list(0x5555857c86a0, 24) = 0 [pid 299] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 299] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 299] getppid() = 0 [pid 299] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 299] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 299] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 299] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 299] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 299] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 299] unshare(CLONE_NEWNS) = 0 [pid 299] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 299] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 299] unshare(CLONE_NEWCGROUP) = 0 [pid 299] unshare(CLONE_NEWUTS) = 0 [pid 299] unshare(CLONE_SYSVSEM) = 0 [pid 299] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 299] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 299] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 299] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 299] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 299] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 299] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 299] getpid() = 1 [pid 299] 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 [ 24.961748][ T299] RSP: 0018:ffffc90000b27c10 EFLAGS: 00010293 [ 24.968890][ T299] RAX: ffffffff81ad1fe5 RBX: ffff88811e35e100 RCX: ffff88811bdb13c0 [ 24.977089][ T299] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 24.985771][ T299] RBP: ffffc90000b27c38 R08: 0000000000000003 R09: 0000000000000004 [ 24.993890][ T299] R10: dffffc0000000000 R11: fffff52000164f70 R12: dffffc0000000000 [ 25.002398][ T299] R13: 1ffff11023c6bc29 R14: ffff88811e35e148 R15: 0000000000000000 [ 25.010903][ T299] FS: 00005555857c83c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 25.022954][ T299] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.030427][ T299] CR2: 00005640bea4f738 CR3: 000000010ad47000 CR4: 00000000003506b0 [ 25.039297][ T299] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.048561][ T299] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.057634][ T299] Call Trace: [ 25.061159][ T299] shmem_rmdir+0x5b/0x90 [ 25.065488][ T299] vfs_rmdir+0x1ab/0x3c0 [ 25.070130][ T299] incfs_kill_sb+0xf7/0x200 [ 25.078365][ T299] deactivate_locked_super+0xa0/0x100 [ 25.084585][ T299] deactivate_super+0xaf/0xe0 [ 25.090047][ T299] cleanup_mnt+0x44f/0x500 [ 25.095275][ T299] __cleanup_mnt+0x19/0x20 [ 25.101003][ T299] task_work_run+0x127/0x190 [ 25.105995][ T299] ptrace_notify+0x230/0x270 [ 25.111395][ T299] ? do_notify_parent+0x810/0x810 [ 25.116765][ T299] ? user_path_at_empty+0x43/0x50 [ 25.122637][ T299] ? __x64_sys_umount+0x12d/0x170 [ 25.128736][ T299] ? path_umount+0xfa0/0xfa0 [ 25.134651][ T299] syscall_exit_work+0x6e/0x140 [ 25.142392][ T299] syscall_exit_to_user_mode+0x2f/0x40 [ 25.148999][ T299] do_syscall_64+0x3d/0x40 [ 25.154868][ T299] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 25.162098][ T299] RIP: 0033:0x7f2ee7eac527 [ 25.167358][ T299] 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 [ 25.192807][ T299] RSP: 002b:00007ffd4276b0c8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 25.202050][ T299] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f2ee7eac527 [ 25.211182][ T299] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd4276b180 [ 25.221634][ T299] RBP: 00007ffd4276b180 R08: 00007ffd4276c180 R09: 00000000ffffffff [ 25.230298][ T299] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffd4276c1f0 [ 25.238447][ T299] R13: 00005555857c9720 R14: 00007ffd4276c1f0 R15: 0000000000000001 [ 25.246721][ T299] ---[ end trace c07cf407e9cedac1 ]--- [ 25.252475][ T299] ================================================================== [ 25.260708][ T299] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60 [ 25.267557][ T299] Write of size 4 at addr 0000000000000170 by task syz-executor288/299 [ 25.275793][ T299] [ 25.278198][ T299] CPU: 0 PID: 299 Comm: syz-executor288 Tainted: G W syzkaller #0 [ 25.287635][ T299] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 25.298404][ T299] Call Trace: [ 25.302184][ T299] __dump_stack+0x21/0x24 [ 25.306698][ T299] dump_stack_lvl+0x1a7/0x208 [ 25.311459][ T299] ? thaw_kernel_threads+0x220/0x220 [ 25.316853][ T299] ? show_regs_print_info+0x18/0x18 [ 25.322149][ T299] ? _raw_spin_lock+0x94/0xf0 [ 25.327085][ T299] ? _raw_spin_trylock_bh+0x150/0x150 [ 25.332670][ T299] ? ihold+0x20/0x60 [ 25.336653][ T299] kasan_report+0xbd/0x140 [ 25.341490][ T299] ? ihold+0x20/0x60 [ 25.345569][ T299] kasan_check_range+0x249/0x2a0 [ 25.350628][ T299] __kasan_check_write+0x14/0x20 [ 25.355806][ T299] ihold+0x20/0x60 [ 25.359768][ T299] vfs_rmdir+0x2d5/0x3c0 [ 25.364284][ T299] incfs_kill_sb+0xf7/0x200 [ 25.369466][ T299] deactivate_locked_super+0xa0/0x100 [ 25.375903][ T299] deactivate_super+0xaf/0xe0 [ 25.380806][ T299] cleanup_mnt+0x44f/0x500 [ 25.385421][ T299] __cleanup_mnt+0x19/0x20 [ 25.390922][ T299] task_work_run+0x127/0x190 [ 25.395496][ T299] ptrace_notify+0x230/0x270 [ 25.400605][ T299] ? do_notify_parent+0x810/0x810 [ 25.405934][ T299] ? user_path_at_empty+0x43/0x50 [ 25.411261][ T299] ? __x64_sys_umount+0x12d/0x170 [ 25.416281][ T299] ? path_umount+0xfa0/0xfa0 [ 25.421162][ T299] syscall_exit_work+0x6e/0x140 [ 25.426361][ T299] syscall_exit_to_user_mode+0x2f/0x40 [ 25.432100][ T299] do_syscall_64+0x3d/0x40 [ 25.437187][ T299] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 25.443391][ T299] RIP: 0033:0x7f2ee7eac527 [ 25.448412][ T299] 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 [ 25.470139][ T299] RSP: 002b:00007ffd4276b0c8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 25.478540][ T299] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f2ee7eac527 [ 25.486496][ T299] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd4276b180 [ 25.495877][ T299] RBP: 00007ffd4276b180 R08: 00007ffd4276c180 R09: 00000000ffffffff [ 25.504016][ T299] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffd4276c1f0 [ 25.511984][ T299] R13: 00005555857c9720 R14: 00007ffd4276c1f0 R15: 0000000000000001 [ 25.520298][ T299] ================================================================== [ 25.528618][ T299] Disabling lock debugging due to kernel taint [ 25.535097][ T299] BUG: kernel NULL pointer dereference, address: 0000000000000170 [ 25.543153][ T299] #PF: supervisor write access in kernel mode [ 25.549403][ T299] #PF: error_code(0x0002) - not-present page [ 25.555624][ T299] PGD 0 P4D 0 [ 25.559008][ T299] Oops: 0002 [#1] PREEMPT SMP KASAN [ 25.564187][ T299] CPU: 0 PID: 299 Comm: syz-executor288 Tainted: G B W syzkaller #0 [ 25.573443][ T299] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 25.583789][ T299] RIP: 0010:ihold+0x26/0x60 [ 25.588377][ T299] Code: 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8 11 7e b7 ff 48 8d bb 70 01 00 00 be 04 00 00 00 e8 20 f5 f1 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 91 [ 25.608846][ T299] RSP: 0018:ffffc90000b27c50 EFLAGS: 00010246 [ 25.614998][ T299] RAX: ffff88811bdb1300 RBX: 0000000000000000 RCX: ffff88811bdb13c0 [ 25.623005][ T299] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff [ 25.631171][ T299] RBP: ffffc90000b27c60 R08: 0000000000000003 R09: 0000000000000004 [ 25.639402][ T299] R10: dffffc0000000000 R11: fffffbfff0dcf648 R12: dffffc0000000000 [ 25.647948][ T299] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 [ 25.656465][ T299] FS: 00005555857c83c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 25.665992][ T299] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.673174][ T299] CR2: 0000000000000170 CR3: 000000010ad47000 CR4: 00000000003506b0 [ 25.681832][ T299] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.690981][ T299] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.699187][ T299] Call Trace: [ 25.702589][ T299] vfs_rmdir+0x2d5/0x3c0 [ 25.707102][ T299] incfs_kill_sb+0xf7/0x200 [ 25.711586][ T299] deactivate_locked_super+0xa0/0x100 [ 25.716948][ T299] deactivate_super+0xaf/0xe0 [ 25.721694][ T299] cleanup_mnt+0x44f/0x500 [ 25.726444][ T299] __cleanup_mnt+0x19/0x20 [ 25.730958][ T299] task_work_run+0x127/0x190 [ 25.735553][ T299] ptrace_notify+0x230/0x270 [ 25.740146][ T299] ? do_notify_parent+0x810/0x810 [ 25.745170][ T299] ? user_path_at_empty+0x43/0x50 [ 25.750632][ T299] ? __x64_sys_umount+0x12d/0x170 [ 25.755913][ T299] ? path_umount+0xfa0/0xfa0 [ 25.760872][ T299] syscall_exit_work+0x6e/0x140 [ 25.766102][ T299] syscall_exit_to_user_mode+0x2f/0x40 [ 25.771896][ T299] do_syscall_64+0x3d/0x40 [ 25.776489][ T299] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 25.782916][ T299] RIP: 0033:0x7f2ee7eac527 [ 25.788187][ T299] 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 [ 25.809407][ T299] RSP: 002b:00007ffd4276b0c8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 25.818430][ T299] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f2ee7eac527 [ 25.827760][ T299] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd4276b180 [ 25.836165][ T299] RBP: 00007ffd4276b180 R08: 00007ffd4276c180 R09: 00000000ffffffff [ 25.845291][ T299] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffd4276c1f0 [ 25.853696][ T299] R13: 00005555857c9720 R14: 00007ffd4276c1f0 R15: 0000000000000001 [ 25.861962][ T299] Modules linked in: [ 25.866105][ T299] CR2: 0000000000000170 [ 25.870359][ T299] ---[ end trace c07cf407e9cedac2 ]--- [ 25.875883][ T299] RIP: 0010:ihold+0x26/0x60 [ 25.880475][ T299] Code: 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8 11 7e b7 ff 48 8d bb 70 01 00 00 be 04 00 00 00 e8 20 f5 f1 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 91 [ 25.900909][ T299] RSP: 0018:ffffc90000b27c50 EFLAGS: 00010246 [ 25.907320][ T299] RAX: ffff88811bdb1300 RBX: 0000000000000000 RCX: ffff88811bdb13c0 [ 25.915452][ T299] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff [ 25.924045][ T299] RBP: ffffc90000b27c60 R08: 0000000000000003 R09: 0000000000000004 [ 25.932579][ T299] R10: dffffc0000000000 R11: fffffbfff0dcf648 R12: dffffc0000000000 [ 25.940807][ T299] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 [ 25.948856][ T299] FS: 00005555857c83c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 25.958389][ T299] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.964951][ T299] CR2: 0000000000000170 CR3: 000000010ad47000 CR4: 00000000003506b0 [ 25.973767][ T299] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.982191][ T299] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.990330][ T299] Kernel panic - not syncing: Fatal exception [ 25.998108][ T299] Kernel Offset: disabled [ 26.002450][ T299] Rebooting in 86400 seconds..