ci2-android-5-15/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-5-15/syz-executor54762395 <...> Warning: Permanently added '10.128.0.123' (ED25519) to the list of known hosts. execve("ci2-android-5-15/syz-executor54762395", ["ci2-android-5-15/syz-executor54762395"], 0x7ffdc9485a00 /* 10 vars */) = 0 brk(NULL) = 0x5555752f9000 brk(0x5555752f9d40) = 0x5555752f9d40 arch_prctl(ARCH_SET_FS, 0x5555752f93c0) = 0 set_tid_address(0x5555752f9690) = 303 set_robust_list(0x5555752f96a0, 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-5-15/syz-executor54762395", 4096) = 43 getrandom("\xf4\xff\x2f\xaa\xf2\xc5\xd4\x9d", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555752f9d40 brk(0x55557531ad40) = 0x55557531ad40 brk(0x55557531b000) = 0x55557531b000 mprotect(0x7fc27b51b000, 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("\x4f\xb2\x12\x00\x67\x45\xd0\x23", 8, GRND_NONBLOCK) = 8 mkdir("./syzkaller.dCpTv5", 0700) = 0 chmod("./syzkaller.dCpTv5", 0777) = 0 chdir("./syzkaller.dCpTv5") = 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=0x5555752f9690) = 304 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-5-15/strace-static-x86_64: Process 304 attached [pid 304] set_robust_list(0x5555752f96a0, 24) = 0 [pid 304] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 304] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 304] getppid() = 0 [pid 304] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 304] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 304] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 304] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 304] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 304] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 304] unshare(CLONE_NEWNS) = 0 [pid 304] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 304] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 304] unshare(CLONE_NEWCGROUP) = 0 [pid 304] unshare(CLONE_NEWUTS) = 0 [pid 304] unshare(CLONE_SYSVSEM) = 0 [pid 304] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 304] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 304] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 304] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 304] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 304] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 304] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 304] getpid() = 1 [pid 304] 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 [ 25.213256][ T304] RSP: 0018:ffffc90000987bd0 EFLAGS: 00010293 [ 25.219405][ T304] RAX: ffffffff81b72215 RBX: ffff88811b9b5b50 RCX: ffff88810ae12780 [ 25.227389][ T304] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 25.235508][ T304] RBP: ffffc90000987bf8 R08: 0000000000000003 R09: 0000000000000004 [ 25.243597][ T304] R10: dffffc0000000000 R11: fffff52000130f68 R12: dffffc0000000000 [ 25.251710][ T304] R13: 1ffff11023736b73 R14: ffff88811b9b5b98 R15: 0000000000000000 [ 25.259717][ T304] FS: 00005555752f93c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 25.268644][ T304] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.275283][ T304] CR2: 000055557530a798 CR3: 0000000123252000 CR4: 00000000003506a0 [ 25.283298][ T304] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.291312][ T304] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.299331][ T304] Call Trace: [ 25.302610][ T304] [ 25.305541][ T304] shmem_rmdir+0x5b/0x90 [ 25.309840][ T304] vfs_rmdir+0x1ae/0x450 [ 25.314101][ T304] incfs_kill_sb+0xfe/0x210 [ 25.318604][ T304] deactivate_locked_super+0xa0/0x100 [ 25.324269][ T304] deactivate_super+0xaf/0xe0 [ 25.328966][ T304] cleanup_mnt+0x44f/0x500 [ 25.333447][ T304] __cleanup_mnt+0x19/0x20 [ 25.337878][ T304] task_work_run+0x127/0x190 [ 25.342513][ T304] ptrace_notify+0x230/0x270 [ 25.347123][ T304] ? do_notify_parent+0x830/0x830 [ 25.352182][ T304] ? user_path_at_empty+0x162/0x1c0 [ 25.357401][ T304] ? __x64_sys_umount+0x12d/0x170 [ 25.362462][ T304] ? path_umount+0xfa0/0xfa0 [ 25.367071][ T304] syscall_exit_work+0x87/0x160 [ 25.371988][ T304] syscall_exit_to_user_mode_prepare+0x1c/0x20 [ 25.378177][ T304] syscall_exit_to_user_mode+0xd/0x30 [ 25.383599][ T304] do_syscall_64+0x58/0xa0 [ 25.388033][ T304] ? clear_bhb_loop+0x50/0xa0 [ 25.392768][ T304] ? clear_bhb_loop+0x50/0xa0 [ 25.397465][ T304] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 25.403413][ T304] RIP: 0033:0x7fc27b488527 [ 25.407874][ T304] 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 [ 25.427548][ T304] RSP: 002b:00007ffe4c1f4b98 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 25.436020][ T304] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fc27b488527 [ 25.444049][ T304] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe4c1f4c50 [ 25.452105][ T304] RBP: 00007ffe4c1f4c50 R08: 00007ffe4c1f5c50 R09: 00000000ffffffff [ 25.460127][ T304] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffe4c1f5cc0 [ 25.468095][ T304] R13: 00005555752fa720 R14: 00007ffe4c1f5cc0 R15: 0000000000000001 [ 25.476140][ T304] [ 25.479215][ T304] ---[ end trace 1c6c4d9da205e740 ]--- [ 25.484760][ T304] ================================================================== [ 25.492840][ T304] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60 [ 25.499085][ T304] Write of size 4 at addr 0000000000000170 by task syz-executor547/304 [ 25.507314][ T304] [ 25.509634][ T304] CPU: 1 PID: 304 Comm: syz-executor547 Tainted: G W syzkaller #0 [ 25.518744][ T304] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 25.528791][ T304] Call Trace: [ 25.532063][ T304] [ 25.534994][ T304] __dump_stack+0x21/0x30 [ 25.539323][ T304] dump_stack_lvl+0x110/0x170 [ 25.544001][ T304] ? show_regs_print_info+0x20/0x20 [ 25.549194][ T304] ? _raw_spin_lock+0x94/0xf0 [ 25.553970][ T304] ? _raw_spin_trylock_bh+0x150/0x150 [ 25.559339][ T304] ? ihold+0x20/0x60 [ 25.563228][ T304] kasan_report+0xcc/0x150 [ 25.567642][ T304] ? ihold+0x20/0x60 [ 25.571530][ T304] kasan_check_range+0x249/0x2a0 [ 25.576477][ T304] __kasan_check_write+0x14/0x20 [ 25.581416][ T304] ihold+0x20/0x60 [ 25.585139][ T304] vfs_rmdir+0x23d/0x450 [ 25.589534][ T304] incfs_kill_sb+0xfe/0x210 [ 25.594062][ T304] deactivate_locked_super+0xa0/0x100 [ 25.599437][ T304] deactivate_super+0xaf/0xe0 [ 25.604124][ T304] cleanup_mnt+0x44f/0x500 [ 25.608544][ T304] __cleanup_mnt+0x19/0x20 [ 25.612965][ T304] task_work_run+0x127/0x190 [ 25.617556][ T304] ptrace_notify+0x230/0x270 [ 25.622258][ T304] ? do_notify_parent+0x830/0x830 [ 25.627278][ T304] ? user_path_at_empty+0x162/0x1c0 [ 25.632470][ T304] ? __x64_sys_umount+0x12d/0x170 [ 25.637486][ T304] ? path_umount+0xfa0/0xfa0 [ 25.642068][ T304] syscall_exit_work+0x87/0x160 [ 25.646912][ T304] syscall_exit_to_user_mode_prepare+0x1c/0x20 [ 25.653060][ T304] syscall_exit_to_user_mode+0xd/0x30 [ 25.658441][ T304] do_syscall_64+0x58/0xa0 [ 25.662850][ T304] ? clear_bhb_loop+0x50/0xa0 [ 25.667521][ T304] ? clear_bhb_loop+0x50/0xa0 [ 25.672192][ T304] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 25.678094][ T304] RIP: 0033:0x7fc27b488527 [ 25.682519][ T304] 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 [ 25.702132][ T304] RSP: 002b:00007ffe4c1f4b98 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 25.710538][ T304] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fc27b488527 [ 25.718518][ T304] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe4c1f4c50 [ 25.726485][ T304] RBP: 00007ffe4c1f4c50 R08: 00007ffe4c1f5c50 R09: 00000000ffffffff [ 25.734641][ T304] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffe4c1f5cc0 [ 25.742607][ T304] R13: 00005555752fa720 R14: 00007ffe4c1f5cc0 R15: 0000000000000001 [ 25.750574][ T304] [ 25.753584][ T304] ================================================================== [ 25.761667][ T304] Disabling lock debugging due to kernel taint [ 25.768052][ T304] BUG: kernel NULL pointer dereference, address: 0000000000000170 [ 25.775883][ T304] #PF: supervisor write access in kernel mode [ 25.781964][ T304] #PF: error_code(0x0002) - not-present page [ 25.787980][ T304] PGD 0 P4D 0 [ 25.791372][ T304] Oops: 0002 [#1] PREEMPT SMP KASAN [ 25.796578][ T304] CPU: 1 PID: 304 Comm: syz-executor547 Tainted: G B W syzkaller #0 [ 25.805695][ T304] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 25.815755][ T304] RIP: 0010:ihold+0x26/0x60 [ 25.820287][ T304] Code: 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8 51 91 b2 ff 48 8d bb 70 01 00 00 be 04 00 00 00 e8 b0 02 f2 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 d1 [ 25.839905][ T304] RSP: 0018:ffffc90000987c10 EFLAGS: 00010246 [ 25.845983][ T304] RAX: ffff88810ae12700 RBX: 0000000000000000 RCX: ffff88810ae12780 [ 25.853969][ T304] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff [ 25.861954][ T304] RBP: ffffc90000987c20 R08: 0000000000000003 R09: 0000000000000004 [ 25.869934][ T304] R10: dffffc0000000000 R11: fffffbfff0e18e4c R12: 1ffff110242014b0 [ 25.877915][ T304] R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000000 [ 25.885895][ T304] FS: 00005555752f93c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 25.894838][ T304] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.901430][ T304] CR2: 0000000000000170 CR3: 0000000123252000 CR4: 00000000003506a0 [ 25.909415][ T304] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.917402][ T304] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.925400][ T304] Call Trace: [ 25.928698][ T304] [ 25.931642][ T304] vfs_rmdir+0x23d/0x450 [ 25.935905][ T304] incfs_kill_sb+0xfe/0x210 [ 25.940420][ T304] deactivate_locked_super+0xa0/0x100 [ 25.945829][ T304] deactivate_super+0xaf/0xe0 [ 25.950520][ T304] cleanup_mnt+0x44f/0x500 [ 25.954951][ T304] __cleanup_mnt+0x19/0x20 [ 25.959389][ T304] task_work_run+0x127/0x190 [ 25.963991][ T304] ptrace_notify+0x230/0x270 [ 25.968590][ T304] ? do_notify_parent+0x830/0x830 [ 25.973630][ T304] ? user_path_at_empty+0x162/0x1c0 [ 25.978841][ T304] ? __x64_sys_umount+0x12d/0x170 [ 25.983879][ T304] ? path_umount+0xfa0/0xfa0 [ 25.988477][ T304] syscall_exit_work+0x87/0x160 [ 25.993339][ T304] syscall_exit_to_user_mode_prepare+0x1c/0x20 [ 25.999508][ T304] syscall_exit_to_user_mode+0xd/0x30 [ 26.004891][ T304] do_syscall_64+0x58/0xa0 [ 26.009316][ T304] ? clear_bhb_loop+0x50/0xa0 [ 26.014003][ T304] ? clear_bhb_loop+0x50/0xa0 [ 26.018691][ T304] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 26.024596][ T304] RIP: 0033:0x7fc27b488527 [ 26.029026][ T304] 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 [ 26.048636][ T304] RSP: 002b:00007ffe4c1f4b98 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 26.057154][ T304] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fc27b488527 [ 26.065132][ T304] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe4c1f4c50 [ 26.073110][ T304] RBP: 00007ffe4c1f4c50 R08: 00007ffe4c1f5c50 R09: 00000000ffffffff [ 26.081095][ T304] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffe4c1f5cc0 [ 26.089076][ T304] R13: 00005555752fa720 R14: 00007ffe4c1f5cc0 R15: 0000000000000001 [ 26.097067][ T304] [ 26.100094][ T304] Modules linked in: [ 26.104015][ T304] CR2: 0000000000000170 [ 26.108182][ T304] ---[ end trace 1c6c4d9da205e741 ]--- [ 26.113667][ T304] RIP: 0010:ihold+0x26/0x60 [ 26.118201][ T304] Code: 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8 51 91 b2 ff 48 8d bb 70 01 00 00 be 04 00 00 00 e8 b0 02 f2 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 d1 [ 26.137834][ T304] RSP: 0018:ffffc90000987c10 EFLAGS: 00010246 [ 26.143912][ T304] RAX: ffff88810ae12700 RBX: 0000000000000000 RCX: ffff88810ae12780 [ 26.151899][ T304] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff [ 26.159878][ T304] RBP: ffffc90000987c20 R08: 0000000000000003 R09: 0000000000000004 [ 26.167863][ T304] R10: dffffc0000000000 R11: fffffbfff0e18e4c R12: 1ffff110242014b0 [ 26.175841][ T304] R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000000 [ 26.183822][ T304] FS: 00005555752f93c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 26.192761][ T304] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.199377][ T304] CR2: 0000000000000170 CR3: 0000000123252000 CR4: 00000000003506a0 [ 26.207361][ T304] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.215336][ T304] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.223400][ T304] Kernel panic - not syncing: Fatal exception [ 26.229758][ T304] Kernel Offset: disabled [ 26.235294][ T304] Rebooting in 86400 seconds..