ci2-android-5-10/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-5-10/syz-executor151067373 <...> Warning: Permanently added '10.128.1.59' (ED25519) to the list of known hosts. execve("ci2-android-5-10/syz-executor151067373", ["ci2-android-5-10/syz-executor151067373"], 0x7ffc4c985260 /* 10 vars */) = 0 brk(NULL) = 0x55557b051000 brk(0x55557b051d40) = 0x55557b051d40 arch_prctl(ARCH_SET_FS, 0x55557b0513c0) = 0 set_tid_address(0x55557b051690) = 297 set_robust_list(0x55557b0516a0, 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-executor151067373", 4096) = 44 getrandom("\xc0\x84\x67\xf4\xc7\xa0\xe1\x1c", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557b051d40 brk(0x55557b072d40) = 0x55557b072d40 brk(0x55557b073000) = 0x55557b073000 mprotect(0x7f73604f5000, 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("\xad\xc3\x24\xca\xeb\xbe\x8c\xf5", 8, GRND_NONBLOCK) = 8 getrandom("\x6d\x21\x3b\x4f\xb2\x8f\xbc\x3e", 8, GRND_NONBLOCK) = 8 mkdir("./syzkaller.16dIJe", 0700) = 0 chmod("./syzkaller.16dIJe", 0777) = 0 chdir("./syzkaller.16dIJe") = 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=0x55557b051690) = 298 ci2-android-5-10/strace-static-x86_64: Process 298 attached [pid 297] rt_sigprocmask(SIG_SETMASK, [] [pid 298] set_robust_list(0x55557b0516a0, 24 [pid 297] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 298] <... set_robust_list resumed>) = 0 [pid 298] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 298] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 298] getppid() = 0 [pid 298] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 298] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 298] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 298] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 298] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 298] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 298] unshare(CLONE_NEWNS) = 0 [pid 298] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 298] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 298] unshare(CLONE_NEWCGROUP) = 0 [pid 298] unshare(CLONE_NEWUTS) = 0 [pid 298] unshare(CLONE_SYSVSEM) = 0 [pid 298] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 298] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 298] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 298] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 298] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 298] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 298] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 298] getpid() = 1 [pid 298] 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 [ 20.402466][ T298] RSP: 0018:ffffc9000096fc10 EFLAGS: 00010293 [ 20.408516][ T298] RAX: ffffffff81ad4045 RBX: ffff88810acd0400 RCX: ffff888100bcbc00 [ 20.416492][ T298] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 20.424465][ T298] RBP: ffffc9000096fc38 R08: 0000000000000003 R09: 0000000000000004 [ 20.432438][ T298] R10: dffffc0000000000 R11: fffff5200012df70 R12: dffffc0000000000 [ 20.440392][ T298] R13: 1ffff1102159a089 R14: ffff88810acd0448 R15: 0000000000000000 [ 20.448357][ T298] FS: 000055557b0513c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 20.457278][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 20.463856][ T298] CR2: 000055d9e5f46308 CR3: 000000011d2ee000 CR4: 00000000003506a0 [ 20.471831][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 20.479774][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 20.487744][ T298] Call Trace: [ 20.491043][ T298] shmem_rmdir+0x5b/0x90 [ 20.495265][ T298] vfs_rmdir+0x1ab/0x3c0 [ 20.499476][ T298] incfs_kill_sb+0xf7/0x200 [ 20.503975][ T298] deactivate_locked_super+0xa0/0x100 [ 20.509327][ T298] deactivate_super+0xaf/0xe0 [ 20.514002][ T298] cleanup_mnt+0x44f/0x500 [ 20.518401][ T298] __cleanup_mnt+0x19/0x20 [ 20.522817][ T298] task_work_run+0x127/0x190 [ 20.527392][ T298] ptrace_notify+0x230/0x270 [ 20.531978][ T298] ? do_notify_parent+0x810/0x810 [ 20.536986][ T298] ? user_path_at_empty+0x43/0x50 [ 20.542006][ T298] ? __x64_sys_umount+0x12d/0x170 [ 20.547009][ T298] ? path_umount+0xfa0/0xfa0 [ 20.551599][ T298] syscall_exit_work+0x6e/0x140 [ 20.556432][ T298] syscall_exit_to_user_mode+0x2f/0x40 [ 20.561884][ T298] do_syscall_64+0x3d/0x40 [ 20.566285][ T298] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 20.572170][ T298] RIP: 0033:0x7f7360462527 [ 20.576569][ T298] 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 [ 20.596192][ T298] RSP: 002b:00007ffeecba76f8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 20.604869][ T298] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f7360462527 [ 20.612871][ T298] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffeecba77b0 [ 20.620852][ T298] RBP: 00007ffeecba77b0 R08: 00007ffeecba87b0 R09: 00000000ffffffff [ 20.628801][ T298] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffeecba8820 [ 20.636790][ T298] R13: 000055557b052720 R14: 00007ffeecba8820 R15: 0000000000000001 [ 20.644768][ T298] ---[ end trace 8911fba81d3a8d44 ]--- [ 20.650242][ T298] ================================================================== [ 20.658286][ T298] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60 [ 20.664496][ T298] Write of size 4 at addr 0000000000000170 by task syz-executor151/298 [ 20.672694][ T298] [ 20.675015][ T298] CPU: 1 PID: 298 Comm: syz-executor151 Tainted: G W syzkaller #0 [ 20.684087][ T298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 20.694112][ T298] Call Trace: [ 20.697375][ T298] __dump_stack+0x21/0x24 [ 20.701672][ T298] dump_stack_lvl+0x1a7/0x208 [ 20.706329][ T298] ? thaw_kernel_threads+0x220/0x220 [ 20.711582][ T298] ? show_regs_print_info+0x18/0x18 [ 20.716766][ T298] ? _raw_spin_lock+0x94/0xf0 [ 20.721411][ T298] ? _raw_spin_trylock_bh+0x150/0x150 [ 20.726768][ T298] ? ihold+0x20/0x60 [ 20.730631][ T298] kasan_report+0xbd/0x140 [ 20.735015][ T298] ? ihold+0x20/0x60 [ 20.738879][ T298] kasan_check_range+0x249/0x2a0 [ 20.743786][ T298] __kasan_check_write+0x14/0x20 [ 20.748706][ T298] ihold+0x20/0x60 [ 20.752397][ T298] vfs_rmdir+0x2d5/0x3c0 [ 20.756610][ T298] incfs_kill_sb+0xf7/0x200 [ 20.761083][ T298] deactivate_locked_super+0xa0/0x100 [ 20.766423][ T298] deactivate_super+0xaf/0xe0 [ 20.771070][ T298] cleanup_mnt+0x44f/0x500 [ 20.775453][ T298] __cleanup_mnt+0x19/0x20 [ 20.779839][ T298] task_work_run+0x127/0x190 [ 20.784397][ T298] ptrace_notify+0x230/0x270 [ 20.788953][ T298] ? do_notify_parent+0x810/0x810 [ 20.793945][ T298] ? user_path_at_empty+0x43/0x50 [ 20.798945][ T298] ? __x64_sys_umount+0x12d/0x170 [ 20.803934][ T298] ? path_umount+0xfa0/0xfa0 [ 20.808498][ T298] syscall_exit_work+0x6e/0x140 [ 20.813343][ T298] syscall_exit_to_user_mode+0x2f/0x40 [ 20.818775][ T298] do_syscall_64+0x3d/0x40 [ 20.823166][ T298] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 20.829051][ T298] RIP: 0033:0x7f7360462527 [ 20.833938][ T298] 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 [ 20.853551][ T298] RSP: 002b:00007ffeecba76f8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 20.861937][ T298] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f7360462527 [ 20.869905][ T298] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffeecba77b0 [ 20.877886][ T298] RBP: 00007ffeecba77b0 R08: 00007ffeecba87b0 R09: 00000000ffffffff [ 20.885844][ T298] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffeecba8820 [ 20.893851][ T298] R13: 000055557b052720 R14: 00007ffeecba8820 R15: 0000000000000001 [ 20.901803][ T298] ================================================================== [ 20.909837][ T298] Disabling lock debugging due to kernel taint [ 20.916151][ T298] BUG: kernel NULL pointer dereference, address: 0000000000000170 [ 20.923938][ T298] #PF: supervisor write access in kernel mode [ 20.929976][ T298] #PF: error_code(0x0002) - not-present page [ 20.935938][ T298] PGD 0 P4D 0 [ 20.939295][ T298] Oops: 0002 [#1] PREEMPT SMP KASAN [ 20.944470][ T298] CPU: 1 PID: 298 Comm: syz-executor151 Tainted: G B W syzkaller #0 [ 20.953546][ T298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 20.963585][ T298] RIP: 0010:ihold+0x26/0x60 [ 20.968066][ T298] Code: 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8 81 6c b7 ff 48 8d bb 70 01 00 00 be 04 00 00 00 e8 40 ef 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 01 [ 20.987646][ T298] RSP: 0018:ffffc9000096fc50 EFLAGS: 00010246 [ 20.993694][ T298] RAX: ffff888100bcbc00 RBX: 0000000000000000 RCX: ffff888100bcbc00 [ 21.001639][ T298] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff [ 21.009584][ T298] RBP: ffffc9000096fc60 R08: 0000000000000003 R09: 0000000000000004 [ 21.017535][ T298] R10: dffffc0000000000 R11: fffffbfff0dcf848 R12: dffffc0000000000 [ 21.025495][ T298] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 [ 21.033460][ T298] FS: 000055557b0513c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 21.042372][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.048937][ T298] CR2: 0000000000000170 CR3: 000000011d2ee000 CR4: 00000000003506a0 [ 21.056889][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.064853][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.072916][ T298] Call Trace: [ 21.076195][ T298] vfs_rmdir+0x2d5/0x3c0 [ 21.080415][ T298] incfs_kill_sb+0xf7/0x200 [ 21.084900][ T298] deactivate_locked_super+0xa0/0x100 [ 21.090249][ T298] deactivate_super+0xaf/0xe0 [ 21.094905][ T298] cleanup_mnt+0x44f/0x500 [ 21.099296][ T298] __cleanup_mnt+0x19/0x20 [ 21.103686][ T298] task_work_run+0x127/0x190 [ 21.108250][ T298] ptrace_notify+0x230/0x270 [ 21.112819][ T298] ? do_notify_parent+0x810/0x810 [ 21.117991][ T298] ? user_path_at_empty+0x43/0x50 [ 21.122992][ T298] ? __x64_sys_umount+0x12d/0x170 [ 21.127990][ T298] ? path_umount+0xfa0/0xfa0 [ 21.132556][ T298] syscall_exit_work+0x6e/0x140 [ 21.137381][ T298] syscall_exit_to_user_mode+0x2f/0x40 [ 21.142812][ T298] do_syscall_64+0x3d/0x40 [ 21.147203][ T298] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 21.153095][ T298] RIP: 0033:0x7f7360462527 [ 21.157490][ T298] 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 [ 21.177067][ T298] RSP: 002b:00007ffeecba76f8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 21.185456][ T298] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f7360462527 [ 21.193404][ T298] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffeecba77b0 [ 21.201349][ T298] RBP: 00007ffeecba77b0 R08: 00007ffeecba87b0 R09: 00000000ffffffff [ 21.209297][ T298] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffeecba8820 [ 21.217245][ T298] R13: 000055557b052720 R14: 00007ffeecba8820 R15: 0000000000000001 [ 21.225196][ T298] Modules linked in: [ 21.229087][ T298] CR2: 0000000000000170 [ 21.233231][ T298] ---[ end trace 8911fba81d3a8d45 ]--- [ 21.238695][ T298] RIP: 0010:ihold+0x26/0x60 [ 21.243173][ T298] Code: 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8 81 6c b7 ff 48 8d bb 70 01 00 00 be 04 00 00 00 e8 40 ef 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 01 [ 21.262756][ T298] RSP: 0018:ffffc9000096fc50 EFLAGS: 00010246 [ 21.268801][ T298] RAX: ffff888100bcbc00 RBX: 0000000000000000 RCX: ffff888100bcbc00 [ 21.276746][ T298] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff [ 21.284690][ T298] RBP: ffffc9000096fc60 R08: 0000000000000003 R09: 0000000000000004 [ 21.292637][ T298] R10: dffffc0000000000 R11: fffffbfff0dcf848 R12: dffffc0000000000 [ 21.300586][ T298] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 [ 21.308535][ T298] FS: 000055557b0513c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 21.317438][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.324017][ T298] CR2: 0000000000000170 CR3: 000000011d2ee000 CR4: 00000000003506a0 [ 21.331976][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.339923][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.347871][ T298] Kernel panic - not syncing: Fatal exception [ 21.354091][ T298] Kernel Offset: disabled [ 21.358399][ T298] Rebooting in 86400 seconds..