ci2-android-6-1/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-6-1/syz-executor976010678 <...> Warning: Permanently added '10.128.0.191' (ED25519) to the list of known hosts. execve("ci2-android-6-1/syz-executor976010678", ["ci2-android-6-1/syz-executor976010678"], 0x7fff869f43e0 /* 10 vars */) = 0 brk(NULL) = 0x5555784f4000 brk(0x5555784f4d40) = 0x5555784f4d40 arch_prctl(ARCH_SET_FS, 0x5555784f43c0) = 0 set_tid_address(0x5555784f4690) = 305 set_robust_list(0x5555784f46a0, 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-executor976010678", 4096) = 43 getrandom("\xc3\xee\x4e\xd1\x29\x6a\x84\x10", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555784f4d40 brk(0x555578515d40) = 0x555578515d40 brk(0x555578516000) = 0x555578516000 mprotect(0x7fc9d5745000, 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("\x51\x67\x69\xb1\x17\xf9\xe2\x18", 8, GRND_NONBLOCK) = 8 mkdir("./syzkaller.LA4Ku1", 0700) = 0 chmod("./syzkaller.LA4Ku1", 0777) = 0 chdir("./syzkaller.LA4Ku1") = 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=0x5555784f4690) = 306 ci2-android-6-1/strace-static-x86_64: Process 306 attached [pid 305] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 306] set_robust_list(0x5555784f46a0, 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 [ 31.986230][ T306] RSP: 0018:ffffc90000e67b60 EFLAGS: 00010293 [ 31.992374][ T306] RAX: ffffffff81c64ae5 RBX: ffff88810ffb8080 RCX: ffff88810fdbbcc0 [ 32.000367][ T306] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 32.008406][ T306] RBP: ffffc90000e67b88 R08: 0000000000000003 R09: 0000000000000004 [ 32.016447][ T306] R10: dffffc0000000000 R11: fffff520001ccf5c R12: dffffc0000000000 [ 32.024501][ T306] R13: 1ffff11021ff7019 R14: ffff88810ffb80c8 R15: 0000000000000000 [ 32.032569][ T306] FS: 00005555784f43c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 32.041558][ T306] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 32.048164][ T306] CR2: 0000555578505798 CR3: 000000010907a000 CR4: 00000000003506b0 [ 32.056192][ T306] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 32.064252][ T306] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 32.072331][ T306] Call Trace: [ 32.075635][ T306] [ 32.078591][ T306] shmem_rmdir+0x5b/0x90 [ 32.082992][ T306] vfs_rmdir+0x381/0x4f0 [ 32.087285][ T306] incfs_kill_sb+0xfe/0x210 [ 32.091866][ T306] deactivate_locked_super+0xb5/0x120 [ 32.097276][ T306] deactivate_super+0xaf/0xe0 [ 32.102016][ T306] cleanup_mnt+0x45e/0x4e0 [ 32.106460][ T306] __cleanup_mnt+0x19/0x20 [ 32.110895][ T306] task_work_run+0x1e1/0x250 [ 32.115546][ T306] ? __cfi_task_work_run+0x10/0x10 [ 32.120711][ T306] ? path_umount+0x345/0xf60 [ 32.125430][ T306] ? __kasan_slab_free+0x11/0x20 [ 32.130410][ T306] ptrace_notify+0x23f/0x270 [ 32.135090][ T306] ? __cfi_path_umount+0x10/0x10 [ 32.140066][ T306] ? __cfi_ptrace_notify+0x10/0x10 [ 32.145276][ T306] ? user_path_at_empty+0x162/0x1c0 [ 32.150548][ T306] ? __x64_sys_umount+0x12d/0x170 [ 32.155643][ T306] ? __cfi___x64_sys_umount+0x10/0x10 [ 32.161097][ T306] ? fpregs_restore_userregs+0x128/0x260 [ 32.166757][ T306] syscall_exit_work+0x84/0x140 [ 32.171707][ T306] syscall_exit_to_user_mode_prepare+0x1c/0x20 [ 32.177893][ T306] syscall_exit_to_user_mode+0xd/0x30 [ 32.183441][ T306] do_syscall_64+0x58/0xa0 [ 32.187952][ T306] ? clear_bhb_loop+0x30/0x80 [ 32.192721][ T306] ? clear_bhb_loop+0x30/0x80 [ 32.197451][ T306] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 32.203424][ T306] RIP: 0033:0x7fc9d56b2527 [ 32.207886][ 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 [ 32.227583][ T306] RSP: 002b:00007ffec54fddf8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 32.236102][ T306] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fc9d56b2527 [ 32.244166][ T306] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffec54fdeb0 [ 32.252253][ T306] RBP: 00007ffec54fdeb0 R08: 00007ffec54feeb0 R09: 00000000ffffffff [ 32.260254][ T306] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffec54fef20 [ 32.268306][ T306] R13: 00005555784f5720 R14: 00007ffec54fef20 R15: 0000000000000001 [ 32.276451][ T306] [ 32.279494][ T306] ---[ end trace 0000000000000000 ]--- [ 32.285155][ T306] ================================================================== [ 32.293265][ T306] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60 [ 32.299514][ T306] Write of size 4 at addr 0000000000000170 by task syz-executor976/306 [ 32.307769][ T306] [ 32.310094][ T306] CPU: 0 PID: 306 Comm: syz-executor976 Tainted: G W syzkaller #0 [ 32.319298][ T306] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 32.329375][ T306] Call Trace: [ 32.332662][ T306] [ 32.335598][ T306] __dump_stack+0x21/0x24 [ 32.339946][ T306] dump_stack_lvl+0x110/0x170 [ 32.344633][ T306] ? __cfi_dump_stack_lvl+0x8/0x8 [ 32.349669][ T306] ? __cfi_call_rcu+0x10/0x10 [ 32.354355][ T306] ? ihold+0x20/0x60 [ 32.358250][ T306] ? ihold+0x20/0x60 [ 32.362172][ T306] print_report+0x3d/0x60 [ 32.366519][ T306] kasan_report+0x122/0x150 [ 32.371031][ T306] ? ihold+0x20/0x60 [ 32.374934][ T306] kasan_check_range+0x249/0x2a0 [ 32.379963][ T306] __kasan_check_write+0x14/0x20 [ 32.384940][ T306] ihold+0x20/0x60 [ 32.388686][ T306] vfs_rmdir+0x24c/0x4f0 [ 32.392949][ T306] incfs_kill_sb+0xfe/0x210 [ 32.397472][ T306] deactivate_locked_super+0xb5/0x120 [ 32.402889][ T306] deactivate_super+0xaf/0xe0 [ 32.407574][ T306] cleanup_mnt+0x45e/0x4e0 [ 32.411995][ T306] __cleanup_mnt+0x19/0x20 [ 32.416429][ T306] task_work_run+0x1e1/0x250 [ 32.421042][ T306] ? __cfi_task_work_run+0x10/0x10 [ 32.426159][ T306] ? path_umount+0x345/0xf60 [ 32.430763][ T306] ? __kasan_slab_free+0x11/0x20 [ 32.435711][ T306] ptrace_notify+0x23f/0x270 [ 32.440311][ T306] ? __cfi_path_umount+0x10/0x10 [ 32.445280][ T306] ? __cfi_ptrace_notify+0x10/0x10 [ 32.450396][ T306] ? user_path_at_empty+0x162/0x1c0 [ 32.455597][ T306] ? __x64_sys_umount+0x12d/0x170 [ 32.460650][ T306] ? __cfi___x64_sys_umount+0x10/0x10 [ 32.466030][ T306] ? fpregs_restore_userregs+0x128/0x260 [ 32.471666][ T306] syscall_exit_work+0x84/0x140 [ 32.476539][ T306] syscall_exit_to_user_mode_prepare+0x1c/0x20 [ 32.482694][ T306] syscall_exit_to_user_mode+0xd/0x30 [ 32.488072][ T306] do_syscall_64+0x58/0xa0 [ 32.492494][ T306] ? clear_bhb_loop+0x30/0x80 [ 32.497174][ T306] ? clear_bhb_loop+0x30/0x80 [ 32.501871][ T306] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 32.507768][ T306] RIP: 0033:0x7fc9d56b2527 [ 32.512183][ 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 [ 32.531793][ T306] RSP: 002b:00007ffec54fddf8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 32.540203][ T306] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fc9d56b2527 [ 32.548263][ T306] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffec54fdeb0 [ 32.556255][ T306] RBP: 00007ffec54fdeb0 R08: 00007ffec54feeb0 R09: 00000000ffffffff [ 32.564236][ T306] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffec54fef20 [ 32.572205][ T306] R13: 00005555784f5720 R14: 00007ffec54fef20 R15: 0000000000000001 [ 32.580181][ T306] [ 32.583219][ T306] ================================================================== [ 32.591501][ T306] Disabling lock debugging due to kernel taint [ 32.597704][ T306] BUG: kernel NULL pointer dereference, address: 0000000000000170 [ 32.605532][ T306] #PF: supervisor write access in kernel mode [ 32.611600][ T306] #PF: error_code(0x0002) - not-present page [ 32.617573][ T306] PGD 0 P4D 0 [ 32.620948][ T306] Oops: 0002 [#1] PREEMPT SMP KASAN [ 32.626151][ T306] CPU: 0 PID: 306 Comm: syz-executor976 Tainted: G B W syzkaller #0 [ 32.635342][ T306] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 32.645398][ T306] RIP: 0010:ihold+0x26/0x60 [ 32.649913][ T306] Code: 33 36 7c df 55 48 89 e5 41 56 53 48 89 fb e8 21 16 ab ff 48 8d bb 70 01 00 00 be 04 00 00 00 e8 f0 a3 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 11 [ 32.669531][ T306] RSP: 0018:ffffc90000e67ba0 EFLAGS: 00010246 [ 32.675607][ T306] RAX: ffff88810fdbbc00 RBX: 0000000000000000 RCX: ffff88810fdbbcc0 [ 32.683603][ T306] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 32.691598][ T306] RBP: ffffc90000e67bb0 R08: ffffffff87b767e7 R09: 1ffffffff0f6ecfc [ 32.699572][ T306] R10: dffffc0000000000 R11: fffffbfff0f6ecfd R12: ffff88810ffb808c [ 32.707544][ T306] R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000000 [ 32.715531][ T306] FS: 00005555784f43c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 32.724473][ T306] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 32.731082][ T306] CR2: 0000000000000170 CR3: 000000010907a000 CR4: 00000000003506b0 [ 32.739100][ T306] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 32.747096][ T306] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 32.755084][ T306] Call Trace: [ 32.758378][ T306] [ 32.761328][ T306] vfs_rmdir+0x24c/0x4f0 [ 32.765598][ T306] incfs_kill_sb+0xfe/0x210 [ 32.770125][ T306] deactivate_locked_super+0xb5/0x120 [ 32.775518][ T306] deactivate_super+0xaf/0xe0 [ 32.780214][ T306] cleanup_mnt+0x45e/0x4e0 [ 32.784672][ T306] __cleanup_mnt+0x19/0x20 [ 32.789123][ T306] task_work_run+0x1e1/0x250 [ 32.793741][ T306] ? __cfi_task_work_run+0x10/0x10 [ 32.799133][ T306] ? path_umount+0x345/0xf60 [ 32.803749][ T306] ? __kasan_slab_free+0x11/0x20 [ 32.808726][ T306] ptrace_notify+0x23f/0x270 [ 32.813338][ T306] ? __cfi_path_umount+0x10/0x10 [ 32.818320][ T306] ? __cfi_ptrace_notify+0x10/0x10 [ 32.823490][ T306] ? user_path_at_empty+0x162/0x1c0 [ 32.828722][ T306] ? __x64_sys_umount+0x12d/0x170 [ 32.833768][ T306] ? __cfi___x64_sys_umount+0x10/0x10 [ 32.839169][ T306] ? fpregs_restore_userregs+0x128/0x260 [ 32.844823][ T306] syscall_exit_work+0x84/0x140 [ 32.849697][ T306] syscall_exit_to_user_mode_prepare+0x1c/0x20 [ 32.855865][ T306] syscall_exit_to_user_mode+0xd/0x30 [ 32.861260][ T306] do_syscall_64+0x58/0xa0 [ 32.865722][ T306] ? clear_bhb_loop+0x30/0x80 [ 32.870418][ T306] ? clear_bhb_loop+0x30/0x80 [ 32.875118][ T306] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 32.881027][ T306] RIP: 0033:0x7fc9d56b2527 [ 32.885464][ 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 [ 32.905092][ T306] RSP: 002b:00007ffec54fddf8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 32.913524][ T306] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fc9d56b2527 [ 32.921506][ T306] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffec54fdeb0 [ 32.929512][ T306] RBP: 00007ffec54fdeb0 R08: 00007ffec54feeb0 R09: 00000000ffffffff [ 32.937498][ T306] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffec54fef20 [ 32.945487][ T306] R13: 00005555784f5720 R14: 00007ffec54fef20 R15: 0000000000000001 [ 32.953491][ T306] [ 32.956539][ T306] Modules linked in: [ 32.960477][ T306] CR2: 0000000000000170 [ 32.964652][ T306] ---[ end trace 0000000000000000 ]--- [ 32.970118][ T306] RIP: 0010:ihold+0x26/0x60 [ 32.974646][ T306] Code: 33 36 7c df 55 48 89 e5 41 56 53 48 89 fb e8 21 16 ab ff 48 8d bb 70 01 00 00 be 04 00 00 00 e8 f0 a3 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 11 [ 32.994274][ T306] RSP: 0018:ffffc90000e67ba0 EFLAGS: 00010246 [ 33.000395][ T306] RAX: ffff88810fdbbc00 RBX: 0000000000000000 RCX: ffff88810fdbbcc0 [ 33.008386][ T306] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 33.016419][ T306] RBP: ffffc90000e67bb0 R08: ffffffff87b767e7 R09: 1ffffffff0f6ecfc [ 33.024436][ T306] R10: dffffc0000000000 R11: fffffbfff0f6ecfd R12: ffff88810ffb808c [ 33.032422][ T306] R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000000 [ 33.040412][ T306] FS: 00005555784f43c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 33.049354][ T306] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.055958][ T306] CR2: 0000000000000170 CR3: 000000010907a000 CR4: 00000000003506b0 [ 33.063946][ T306] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.071940][ T306] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.079952][ T306] Kernel panic - not syncing: Fatal exception [ 33.086592][ T306] Kernel Offset: disabled [ 33.090956][ T306] Rebooting in 86400 seconds..