ci2-android-6-1/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-6-1/syz-executor1315831892 <...> Warning: Permanently added '10.128.1.180' (ED25519) to the list of known hosts. execve("ci2-android-6-1/syz-executor1315831892", ["ci2-android-6-1/syz-executor1315831892"], 0x7ffd8a22b980 /* 10 vars */) = 0 brk(NULL) = 0x55555fbe4000 brk(0x55555fbe4d40) = 0x55555fbe4d40 arch_prctl(ARCH_SET_FS, 0x55555fbe43c0) = 0 set_tid_address(0x55555fbe4690) = 304 set_robust_list(0x55555fbe46a0, 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-executor1315831892", 4096) = 44 getrandom("\xaf\xb4\x26\x7c\x52\xc7\x72\xd7", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555fbe4d40 brk(0x55555fc05d40) = 0x55555fc05d40 brk(0x55555fc06000) = 0x55555fc06000 mprotect(0x7f4e5d1d1000, 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("\x8e\xea\x01\x6c\x48\x28\x34\x37", 8, GRND_NONBLOCK) = 8 mkdir("./syzkaller.kIMcoz", 0700) = 0 chmod("./syzkaller.kIMcoz", 0777) = 0 chdir("./syzkaller.kIMcoz") = 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=0x55555fbe4690) = 305 ci2-android-6-1/strace-static-x86_64: Process 305 attached [pid 304] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 305] set_robust_list(0x55555fbe46a0, 24) = 0 [pid 305] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 305] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 305] getppid() = 0 [pid 305] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 305] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 305] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 305] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 305] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 305] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 305] unshare(CLONE_NEWNS) = 0 [pid 305] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 305] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 305] unshare(CLONE_NEWCGROUP) = 0 [pid 305] unshare(CLONE_NEWUTS) = 0 [pid 305] unshare(CLONE_SYSVSEM) = 0 [pid 305] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 305] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 305] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 305] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 305] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 305] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 305] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 305] getpid() = 1 [pid 305] 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 [ 25.613100][ T305] RSP: 0018:ffffc90000e67b60 EFLAGS: 00010293 [ 25.619193][ T305] RAX: ffffffff81c660c5 RBX: ffff8881216e8080 RCX: ffff88810f38bcc0 [ 25.627197][ T305] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 25.635210][ T305] RBP: ffffc90000e67b88 R08: 0000000000000003 R09: 0000000000000004 [ 25.643240][ T305] R10: dffffc0000000000 R11: fffff520001ccf5c R12: dffffc0000000000 [ 25.651227][ T305] R13: 1ffff110242dd019 R14: ffff8881216e80c8 R15: 0000000000000000 [ 25.659243][ T305] FS: 000055555fbe43c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 25.668217][ T305] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.674865][ T305] CR2: 000055555fbf5798 CR3: 00000001213d5000 CR4: 00000000003506b0 [ 25.682888][ T305] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.690879][ T305] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.698895][ T305] Call Trace: [ 25.702227][ T305] [ 25.705179][ T305] shmem_rmdir+0x5b/0x90 [ 25.709449][ T305] vfs_rmdir+0x381/0x4f0 [ 25.713754][ T305] incfs_kill_sb+0xfe/0x210 [ 25.718285][ T305] deactivate_locked_super+0xb5/0x120 [ 25.723697][ T305] deactivate_super+0xaf/0xe0 [ 25.728399][ T305] cleanup_mnt+0x45e/0x4e0 [ 25.732844][ T305] __cleanup_mnt+0x19/0x20 [ 25.737292][ T305] task_work_run+0x1e1/0x250 [ 25.741904][ T305] ? __cfi_task_work_run+0x10/0x10 [ 25.747070][ T305] ? path_umount+0x345/0xf60 [ 25.751695][ T305] ? __kasan_slab_free+0x11/0x20 [ 25.756675][ T305] ptrace_notify+0x23f/0x270 [ 25.761286][ T305] ? __cfi_path_umount+0x10/0x10 [ 25.766267][ T305] ? __cfi_ptrace_notify+0x10/0x10 [ 25.771404][ T305] ? user_path_at_empty+0x162/0x1c0 [ 25.776635][ T305] ? __x64_sys_umount+0x12d/0x170 [ 25.781675][ T305] ? __cfi___x64_sys_umount+0x10/0x10 [ 25.787103][ T305] ? fpregs_restore_userregs+0x128/0x260 [ 25.792797][ T305] syscall_exit_work+0x84/0x140 [ 25.797659][ T305] syscall_exit_to_user_mode_prepare+0x1c/0x20 [ 25.803848][ T305] syscall_exit_to_user_mode+0xd/0x30 [ 25.809234][ T305] do_syscall_64+0x58/0xa0 [ 25.813677][ T305] ? clear_bhb_loop+0x30/0x80 [ 25.818371][ T305] ? clear_bhb_loop+0x30/0x80 [ 25.823092][ T305] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 25.829001][ T305] RIP: 0033:0x7f4e5d13e527 [ 25.833475][ T305] 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 [ 25.853118][ T305] RSP: 002b:00007fffcfccdfb8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 25.861536][ T305] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f4e5d13e527 [ 25.869542][ T305] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffcfcce070 [ 25.877555][ T305] RBP: 00007fffcfcce070 R08: 00007fffcfccf070 R09: 00000000ffffffff [ 25.885574][ T305] R10: 0000000000000000 R11: 0000000000000206 R12: 00007fffcfccf0e0 [ 25.893590][ T305] R13: 000055555fbe5720 R14: 00007fffcfccf0e0 R15: 0000000000000001 [ 25.901575][ T305] [ 25.904632][ T305] ---[ end trace 0000000000000000 ]--- [ 25.910202][ T305] ================================================================== [ 25.918275][ T305] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60 [ 25.924528][ T305] Write of size 4 at addr 0000000000000170 by task syz-executor131/305 [ 25.932759][ T305] [ 25.935081][ T305] CPU: 1 PID: 305 Comm: syz-executor131 Tainted: G W syzkaller #0 [ 25.944264][ T305] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 25.954310][ T305] Call Trace: [ 25.957596][ T305] [ 25.960535][ T305] __dump_stack+0x21/0x24 [ 25.964868][ T305] dump_stack_lvl+0x110/0x170 [ 25.969564][ T305] ? __cfi_dump_stack_lvl+0x8/0x8 [ 25.974590][ T305] ? __cfi_call_rcu+0x10/0x10 [ 25.979264][ T305] ? ihold+0x20/0x60 [ 25.983187][ T305] ? ihold+0x20/0x60 [ 25.987099][ T305] print_report+0x3d/0x60 [ 25.991437][ T305] kasan_report+0x122/0x150 [ 25.995938][ T305] ? ihold+0x20/0x60 [ 25.999833][ T305] kasan_check_range+0x249/0x2a0 [ 26.004782][ T305] __kasan_check_write+0x14/0x20 [ 26.009716][ T305] ihold+0x20/0x60 [ 26.013434][ T305] vfs_rmdir+0x24c/0x4f0 [ 26.017679][ T305] incfs_kill_sb+0xfe/0x210 [ 26.022186][ T305] deactivate_locked_super+0xb5/0x120 [ 26.027564][ T305] deactivate_super+0xaf/0xe0 [ 26.032251][ T305] cleanup_mnt+0x45e/0x4e0 [ 26.036671][ T305] __cleanup_mnt+0x19/0x20 [ 26.041083][ T305] task_work_run+0x1e1/0x250 [ 26.045676][ T305] ? __cfi_task_work_run+0x10/0x10 [ 26.050789][ T305] ? path_umount+0x345/0xf60 [ 26.055379][ T305] ? __kasan_slab_free+0x11/0x20 [ 26.060317][ T305] ptrace_notify+0x23f/0x270 [ 26.064950][ T305] ? __cfi_path_umount+0x10/0x10 [ 26.069901][ T305] ? __cfi_ptrace_notify+0x10/0x10 [ 26.075034][ T305] ? user_path_at_empty+0x162/0x1c0 [ 26.080247][ T305] ? __x64_sys_umount+0x12d/0x170 [ 26.085273][ T305] ? __cfi___x64_sys_umount+0x10/0x10 [ 26.090656][ T305] ? fpregs_restore_userregs+0x128/0x260 [ 26.096300][ T305] syscall_exit_work+0x84/0x140 [ 26.101157][ T305] syscall_exit_to_user_mode_prepare+0x1c/0x20 [ 26.107323][ T305] syscall_exit_to_user_mode+0xd/0x30 [ 26.112703][ T305] do_syscall_64+0x58/0xa0 [ 26.117122][ T305] ? clear_bhb_loop+0x30/0x80 [ 26.121803][ T305] ? clear_bhb_loop+0x30/0x80 [ 26.126494][ T305] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 26.132398][ T305] RIP: 0033:0x7f4e5d13e527 [ 26.136816][ T305] 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 [ 26.156417][ T305] RSP: 002b:00007fffcfccdfb8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 26.164830][ T305] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f4e5d13e527 [ 26.172816][ T305] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffcfcce070 [ 26.180794][ T305] RBP: 00007fffcfcce070 R08: 00007fffcfccf070 R09: 00000000ffffffff [ 26.188758][ T305] R10: 0000000000000000 R11: 0000000000000206 R12: 00007fffcfccf0e0 [ 26.196724][ T305] R13: 000055555fbe5720 R14: 00007fffcfccf0e0 R15: 0000000000000001 [ 26.204696][ T305] [ 26.207714][ T305] ================================================================== [ 26.215973][ T305] Disabling lock debugging due to kernel taint [ 26.222180][ T305] BUG: kernel NULL pointer dereference, address: 0000000000000170 [ 26.229987][ T305] #PF: supervisor write access in kernel mode [ 26.236054][ T305] #PF: error_code(0x0002) - not-present page [ 26.242055][ T305] PGD 0 P4D 0 [ 26.245447][ T305] Oops: 0002 [#1] PREEMPT SMP KASAN [ 26.250654][ T305] CPU: 1 PID: 305 Comm: syz-executor131 Tainted: G B W syzkaller #0 [ 26.259858][ T305] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 26.269951][ T305] RIP: 0010:ihold+0x26/0x60 [ 26.274474][ T305] Code: 33 36 7c df 55 48 89 e5 41 56 53 48 89 fb e8 e1 04 ab ff 48 8d bb 70 01 00 00 be 04 00 00 00 e8 40 a1 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 d1 [ 26.294085][ T305] RSP: 0018:ffffc90000e67ba0 EFLAGS: 00010246 [ 26.300163][ T305] RAX: ffff88810f38bc00 RBX: 0000000000000000 RCX: ffff88810f38bcc0 [ 26.308146][ T305] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 26.316126][ T305] RBP: ffffc90000e67bb0 R08: ffffffff87b777e7 R09: 1ffffffff0f6eefc [ 26.324104][ T305] R10: dffffc0000000000 R11: fffffbfff0f6eefd R12: ffff8881216e808c [ 26.332089][ T305] R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000000 [ 26.340067][ T305] FS: 000055555fbe43c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 26.349017][ T305] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.355622][ T305] CR2: 0000000000000170 CR3: 00000001213d5000 CR4: 00000000003506a0 [ 26.363605][ T305] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.371582][ T305] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.379556][ T305] Call Trace: [ 26.382836][ T305] [ 26.385778][ T305] vfs_rmdir+0x24c/0x4f0 [ 26.390038][ T305] incfs_kill_sb+0xfe/0x210 [ 26.394553][ T305] deactivate_locked_super+0xb5/0x120 [ 26.399943][ T305] deactivate_super+0xaf/0xe0 [ 26.404634][ T305] cleanup_mnt+0x45e/0x4e0 [ 26.409062][ T305] __cleanup_mnt+0x19/0x20 [ 26.413482][ T305] task_work_run+0x1e1/0x250 [ 26.418086][ T305] ? __cfi_task_work_run+0x10/0x10 [ 26.423209][ T305] ? path_umount+0x345/0xf60 [ 26.427816][ T305] ? __kasan_slab_free+0x11/0x20 [ 26.432800][ T305] ptrace_notify+0x23f/0x270 [ 26.437408][ T305] ? __cfi_path_umount+0x10/0x10 [ 26.442364][ T305] ? __cfi_ptrace_notify+0x10/0x10 [ 26.447493][ T305] ? user_path_at_empty+0x162/0x1c0 [ 26.452709][ T305] ? __x64_sys_umount+0x12d/0x170 [ 26.457766][ T305] ? __cfi___x64_sys_umount+0x10/0x10 [ 26.463156][ T305] ? fpregs_restore_userregs+0x128/0x260 [ 26.468821][ T305] syscall_exit_work+0x84/0x140 [ 26.473696][ T305] syscall_exit_to_user_mode_prepare+0x1c/0x20 [ 26.479877][ T305] syscall_exit_to_user_mode+0xd/0x30 [ 26.485268][ T305] do_syscall_64+0x58/0xa0 [ 26.489694][ T305] ? clear_bhb_loop+0x30/0x80 [ 26.494383][ T305] ? clear_bhb_loop+0x30/0x80 [ 26.499076][ T305] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 26.504983][ T305] RIP: 0033:0x7f4e5d13e527 [ 26.509410][ T305] 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 [ 26.529026][ T305] RSP: 002b:00007fffcfccdfb8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 26.537455][ T305] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f4e5d13e527 [ 26.545434][ T305] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fffcfcce070 [ 26.553418][ T305] RBP: 00007fffcfcce070 R08: 00007fffcfccf070 R09: 00000000ffffffff [ 26.561396][ T305] R10: 0000000000000000 R11: 0000000000000206 R12: 00007fffcfccf0e0 [ 26.569381][ T305] R13: 000055555fbe5720 R14: 00007fffcfccf0e0 R15: 0000000000000001 [ 26.577366][ T305] [ 26.580389][ T305] Modules linked in: [ 26.584311][ T305] CR2: 0000000000000170 [ 26.588470][ T305] ---[ end trace 0000000000000000 ]--- [ 26.593924][ T305] RIP: 0010:ihold+0x26/0x60 [ 26.598443][ T305] Code: 33 36 7c df 55 48 89 e5 41 56 53 48 89 fb e8 e1 04 ab ff 48 8d bb 70 01 00 00 be 04 00 00 00 e8 40 a1 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 d1 [ 26.618066][ T305] RSP: 0018:ffffc90000e67ba0 EFLAGS: 00010246 [ 26.624136][ T305] RAX: ffff88810f38bc00 RBX: 0000000000000000 RCX: ffff88810f38bcc0 [ 26.632114][ T305] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 26.640086][ T305] RBP: ffffc90000e67bb0 R08: ffffffff87b777e7 R09: 1ffffffff0f6eefc [ 26.648074][ T305] R10: dffffc0000000000 R11: fffffbfff0f6eefd R12: ffff8881216e808c [ 26.656050][ T305] R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000000 [ 26.664044][ T305] FS: 000055555fbe43c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 26.672982][ T305] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.679588][ T305] CR2: 0000000000000170 CR3: 00000001213d5000 CR4: 00000000003506a0 [ 26.687579][ T305] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.695554][ T305] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.703531][ T305] Kernel panic - not syncing: Fatal exception [ 26.709723][ T305] Kernel Offset: disabled [ 26.714060][ T305] Rebooting in 86400 seconds..