ci2-android-5-10/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-5-10/syz-executor3647785753 <...> Warning: Permanently added '10.128.1.64' (ED25519) to the list of known hosts. execve("ci2-android-5-10/syz-executor3647785753", ["ci2-android-5-10/syz-executor3647785753"], 0x7ffebd093aa0 /* 10 vars */) = 0 brk(NULL) = 0x555590d2a000 brk(0x555590d2ad40) = 0x555590d2ad40 arch_prctl(ARCH_SET_FS, 0x555590d2a3c0) = 0 set_tid_address(0x555590d2a690) = 297 set_robust_list(0x555590d2a6a0, 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-executor3647785753", 4096) = 45 getrandom("\x9d\xc6\xef\xf0\x80\x60\x7a\x87", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555590d2ad40 brk(0x555590d4bd40) = 0x555590d4bd40 brk(0x555590d4c000) = 0x555590d4c000 mprotect(0x7fef5f573000, 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("\x7f\x63\x87\x86\x03\xa3\x69\x98", 8, GRND_NONBLOCK) = 8 mkdir("./syzkaller.HJlD4f", 0700) = 0 chmod("./syzkaller.HJlD4f", 0777) = 0 chdir("./syzkaller.HJlD4f") = 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=0x555590d2a690) = 298 ci2-android-5-10/strace-static-x86_64: Process 298 attached [pid 298] set_robust_list(0x555590d2a6a0, 24) = 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 [pid 297] rt_sigprocmask(SIG_SETMASK, [] [pid 298] <... mount resumed>) = 0 [pid 297] <... rt_sigprocmask resumed>, NULL, 8) = 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 [ 26.550984][ T298] RSP: 0018:ffffc9000093fc10 EFLAGS: 00010293 [ 26.557235][ T298] RAX: ffffffff81ad1d65 RBX: ffff888121d95d60 RCX: ffff88810ae03b40 [ 26.566348][ T298] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 26.574549][ T298] RBP: ffffc9000093fc38 R08: 0000000000000003 R09: 0000000000000004 [ 26.583680][ T298] R10: dffffc0000000000 R11: fffff52000127f70 R12: dffffc0000000000 [ 26.591949][ T298] R13: 1ffff110243b2bb5 R14: ffff888121d95da8 R15: 0000000000000000 [ 26.600922][ T298] FS: 0000555590d2a3c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 26.611330][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.618381][ T298] CR2: 0000555590d3b798 CR3: 000000011e222000 CR4: 00000000003506a0 [ 26.626486][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.634558][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.643335][ T298] Call Trace: [ 26.647119][ T298] shmem_rmdir+0x5b/0x90 [ 26.651612][ T298] vfs_rmdir+0x1ab/0x3c0 [ 26.656648][ T298] incfs_kill_sb+0xf7/0x200 [ 26.661230][ T298] deactivate_locked_super+0xa0/0x100 [ 26.666727][ T298] deactivate_super+0xaf/0xe0 [ 26.672228][ T298] cleanup_mnt+0x44f/0x500 [ 26.677186][ T298] __cleanup_mnt+0x19/0x20 [ 26.681813][ T298] task_work_run+0x127/0x190 [ 26.687245][ T298] ptrace_notify+0x230/0x270 [ 26.691966][ T298] ? do_notify_parent+0x810/0x810 [ 26.697981][ T298] ? user_path_at_empty+0x43/0x50 [ 26.704897][ T298] ? __x64_sys_umount+0x12d/0x170 [ 26.710325][ T298] ? path_umount+0xfa0/0xfa0 [ 26.715077][ T298] syscall_exit_work+0x6e/0x140 [ 26.721584][ T298] syscall_exit_to_user_mode+0x2f/0x40 [ 26.727173][ T298] do_syscall_64+0x3d/0x40 [ 26.731760][ T298] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 26.737934][ T298] RIP: 0033:0x7fef5f4e0527 [ 26.742960][ 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 [ 26.765424][ T298] RSP: 002b:00007fffb442ef38 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 26.774357][ T298] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fef5f4e0527 [ 26.782604][ T298] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffb442eff0 [ 26.790692][ T298] RBP: 00007fffb442eff0 R08: 00007fffb442fff0 R09: 00000000ffffffff [ 26.798797][ T298] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffb4430060 [ 26.806904][ T298] R13: 0000555590d2b720 R14: 00007fffb4430060 R15: 0000000000000001 [ 26.815249][ T298] ---[ end trace a77dc6f2cf6f27be ]--- [ 26.820954][ T298] ================================================================== [ 26.829179][ T298] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60 [ 26.835517][ T298] Write of size 4 at addr 0000000000000170 by task syz-executor364/298 [ 26.843774][ T298] [ 26.846408][ T298] CPU: 1 PID: 298 Comm: syz-executor364 Tainted: G W syzkaller #0 [ 26.855523][ T298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 26.866378][ T298] Call Trace: [ 26.869712][ T298] __dump_stack+0x21/0x24 [ 26.874617][ T298] dump_stack_lvl+0x1a7/0x208 [ 26.879293][ T298] ? thaw_kernel_threads+0x220/0x220 [ 26.884580][ T298] ? show_regs_print_info+0x18/0x18 [ 26.889923][ T298] ? _raw_spin_lock+0x94/0xf0 [ 26.895070][ T298] ? _raw_spin_trylock_bh+0x150/0x150 [ 26.900465][ T298] ? ihold+0x20/0x60 [ 26.905180][ T298] kasan_report+0xbd/0x140 [ 26.909608][ T298] ? ihold+0x20/0x60 [ 26.913522][ T298] kasan_check_range+0x249/0x2a0 [ 26.918585][ T298] __kasan_check_write+0x14/0x20 [ 26.923717][ T298] ihold+0x20/0x60 [ 26.928013][ T298] vfs_rmdir+0x2d5/0x3c0 [ 26.932266][ T298] incfs_kill_sb+0xf7/0x200 [ 26.936781][ T298] deactivate_locked_super+0xa0/0x100 [ 26.942178][ T298] deactivate_super+0xaf/0xe0 [ 26.946866][ T298] cleanup_mnt+0x44f/0x500 [ 26.951289][ T298] __cleanup_mnt+0x19/0x20 [ 26.955754][ T298] task_work_run+0x127/0x190 [ 26.960538][ T298] ptrace_notify+0x230/0x270 [ 26.965167][ T298] ? do_notify_parent+0x810/0x810 [ 26.970890][ T298] ? user_path_at_empty+0x43/0x50 [ 26.976576][ T298] ? __x64_sys_umount+0x12d/0x170 [ 26.981629][ T298] ? path_umount+0xfa0/0xfa0 [ 26.986354][ T298] syscall_exit_work+0x6e/0x140 [ 26.991208][ T298] syscall_exit_to_user_mode+0x2f/0x40 [ 26.996664][ T298] do_syscall_64+0x3d/0x40 [ 27.001074][ T298] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 27.006972][ T298] RIP: 0033:0x7fef5f4e0527 [ 27.011388][ 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 [ 27.032583][ T298] RSP: 002b:00007fffb442ef38 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 27.041086][ T298] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fef5f4e0527 [ 27.049080][ T298] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffb442eff0 [ 27.057074][ T298] RBP: 00007fffb442eff0 R08: 00007fffb442fff0 R09: 00000000ffffffff [ 27.065048][ T298] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffb4430060 [ 27.073207][ T298] R13: 0000555590d2b720 R14: 00007fffb4430060 R15: 0000000000000001 [ 27.081297][ T298] ================================================================== [ 27.089381][ T298] Disabling lock debugging due to kernel taint [ 27.095788][ T298] BUG: kernel NULL pointer dereference, address: 0000000000000170 [ 27.103710][ T298] #PF: supervisor write access in kernel mode [ 27.109994][ T298] #PF: error_code(0x0002) - not-present page [ 27.115992][ T298] PGD 0 P4D 0 [ 27.119392][ T298] Oops: 0002 [#1] PREEMPT SMP KASAN [ 27.124601][ T298] CPU: 1 PID: 298 Comm: syz-executor364 Tainted: G B W syzkaller #0 [ 27.133714][ T298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 27.143793][ T298] RIP: 0010:ihold+0x26/0x60 [ 27.148313][ T298] 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 [ 27.168247][ T298] RSP: 0018:ffffc9000093fc50 EFLAGS: 00010246 [ 27.175112][ T298] RAX: ffff88810ae03b00 RBX: 0000000000000000 RCX: ffff88810ae03b40 [ 27.183191][ T298] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff [ 27.191553][ T298] RBP: ffffc9000093fc60 R08: 0000000000000003 R09: 0000000000000004 [ 27.199646][ T298] R10: dffffc0000000000 R11: fffffbfff0dcf648 R12: dffffc0000000000 [ 27.207910][ T298] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 [ 27.216173][ T298] FS: 0000555590d2a3c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 27.225325][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.232942][ T298] CR2: 0000000000000170 CR3: 000000011e222000 CR4: 00000000003506a0 [ 27.240946][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.249015][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.256998][ T298] Call Trace: [ 27.260306][ T298] vfs_rmdir+0x2d5/0x3c0 [ 27.264681][ T298] incfs_kill_sb+0xf7/0x200 [ 27.269287][ T298] deactivate_locked_super+0xa0/0x100 [ 27.274882][ T298] deactivate_super+0xaf/0xe0 [ 27.279585][ T298] cleanup_mnt+0x44f/0x500 [ 27.284518][ T298] __cleanup_mnt+0x19/0x20 [ 27.289201][ T298] task_work_run+0x127/0x190 [ 27.294205][ T298] ptrace_notify+0x230/0x270 [ 27.299135][ T298] ? do_notify_parent+0x810/0x810 [ 27.305492][ T298] ? user_path_at_empty+0x43/0x50 [ 27.310725][ T298] ? __x64_sys_umount+0x12d/0x170 [ 27.316406][ T298] ? path_umount+0xfa0/0xfa0 [ 27.321214][ T298] syscall_exit_work+0x6e/0x140 [ 27.326185][ T298] syscall_exit_to_user_mode+0x2f/0x40 [ 27.331976][ T298] do_syscall_64+0x3d/0x40 [ 27.336493][ T298] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 27.342579][ T298] RIP: 0033:0x7fef5f4e0527 [ 27.347096][ 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 [ 27.367548][ T298] RSP: 002b:00007fffb442ef38 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 27.376000][ T298] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fef5f4e0527 [ 27.383999][ T298] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffb442eff0 [ 27.392181][ T298] RBP: 00007fffb442eff0 R08: 00007fffb442fff0 R09: 00000000ffffffff [ 27.400219][ T298] R10: 0000000000000000 R11: 0000000000000202 R12: 00007fffb4430060 [ 27.408224][ T298] R13: 0000555590d2b720 R14: 00007fffb4430060 R15: 0000000000000001 [ 27.416226][ T298] Modules linked in: [ 27.420183][ T298] CR2: 0000000000000170 [ 27.424385][ T298] ---[ end trace a77dc6f2cf6f27bf ]--- [ 27.429882][ T298] RIP: 0010:ihold+0x26/0x60 [ 27.434424][ T298] 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 [ 27.454398][ T298] RSP: 0018:ffffc9000093fc50 EFLAGS: 00010246 [ 27.460488][ T298] RAX: ffff88810ae03b00 RBX: 0000000000000000 RCX: ffff88810ae03b40 [ 27.468486][ T298] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff [ 27.476471][ T298] RBP: ffffc9000093fc60 R08: 0000000000000003 R09: 0000000000000004 [ 27.484487][ T298] R10: dffffc0000000000 R11: fffffbfff0dcf648 R12: dffffc0000000000 [ 27.492471][ T298] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 [ 27.500464][ T298] FS: 0000555590d2a3c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 27.509414][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.516007][ T298] CR2: 0000000000000170 CR3: 000000011e222000 CR4: 00000000003506a0 [ 27.524540][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.532815][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.540997][ T298] Kernel panic - not syncing: Fatal exception [ 27.547378][ T298] Kernel Offset: disabled [ 27.551830][ T298] Rebooting in 86400 seconds..