ci2-android-5-10/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-5-10/syz-executor3234227201 <...> Warning: Permanently added '10.128.10.24' (ED25519) to the list of known hosts. execve("ci2-android-5-10/syz-executor3234227201", ["ci2-android-5-10/syz-executor3234227201"], 0x7fff8d43c720 /* 10 vars */) = 0 brk(NULL) = 0x55557e8ec000 brk(0x55557e8ece00) = 0x55557e8ece00 arch_prctl(ARCH_SET_FS, 0x55557e8ec480) = 0 set_tid_address(0x55557e8ec750) = 297 set_robust_list(0x55557e8ec760, 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-executor3234227201", 4096) = 45 getrandom("\xe4\x6a\x7e\x7f\x83\x9f\xf9\xcd", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557e8ece00 brk(0x55557e90de00) = 0x55557e90de00 brk(0x55557e90e000) = 0x55557e90e000 mprotect(0x7ff0ff92c000, 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 rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7ff0ff883eb0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7ff0ff887550}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7ff0ff883eb0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7ff0ff887550}, NULL, 8) = 0 getrandom("\x1a\xff\x0d\x8f\x24\x6e\x05\x86", 8, GRND_NONBLOCK) = 8 mkdir("./syzkaller.SzQLSZ", 0700) = 0 chmod("./syzkaller.SzQLSZ", 0777) = 0 chdir("./syzkaller.SzQLSZ") = 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=0x55557e8ec750) = 298 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-5-10/strace-static-x86_64: Process 298 attached [pid 298] set_robust_list(0x55557e8ec760, 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) = 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 [ 26.073449][ T298] RSP: 0018:ffffc90000b97c10 EFLAGS: 00010293 [ 26.079537][ T298] RAX: ffffffff81ad1d85 RBX: ffff88810af19620 RCX: ffff88810ac42780 [ 26.087539][ T298] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 26.095535][ T298] RBP: ffffc90000b97c38 R08: 0000000000000003 R09: 0000000000000004 [ 26.103540][ T298] R10: dffffc0000000000 R11: fffff52000172f70 R12: dffffc0000000000 [ 26.111584][ T298] R13: 1ffff110215e32cd R14: ffff88810af19668 R15: 0000000000000000 [ 26.119552][ T298] FS: 000055557e8ec480(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 26.128798][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.135455][ T298] CR2: 00005573a0795738 CR3: 00000001055c1000 CR4: 00000000003506b0 [ 26.143503][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.151495][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.159463][ T298] Call Trace: [ 26.162776][ T298] shmem_rmdir+0x5b/0x90 [ 26.167023][ T298] vfs_rmdir+0x1ab/0x3c0 [ 26.171277][ T298] incfs_kill_sb+0xf7/0x200 [ 26.175782][ T298] deactivate_locked_super+0xa0/0x100 [ 26.181167][ T298] deactivate_super+0xaf/0xe0 [ 26.185843][ T298] cleanup_mnt+0x44f/0x500 [ 26.190237][ T298] __cleanup_mnt+0x19/0x20 [ 26.194666][ T298] task_work_run+0x127/0x190 [ 26.199262][ T298] ptrace_notify+0x230/0x270 [ 26.203859][ T298] ? do_notify_parent+0x810/0x810 [ 26.208886][ T298] ? user_path_at_empty+0x43/0x50 [ 26.213928][ T298] ? __x64_sys_umount+0x12d/0x170 [ 26.218974][ T298] ? path_umount+0xfa0/0xfa0 [ 26.223593][ T298] syscall_exit_work+0x6e/0x140 [ 26.228477][ T298] syscall_exit_to_user_mode+0x2f/0x40 [ 26.234104][ T298] do_syscall_64+0x3d/0x40 [ 26.238588][ T298] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 26.244535][ T298] RIP: 0033:0x7ff0ff8a1667 [ 26.248956][ T298] Code: bf 41 4d 56 53 b8 9d 00 00 00 0f 05 83 f8 ea 75 a2 c7 05 24 04 09 00 00 00 00 00 eb 96 e8 d1 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 [ 26.268803][ T298] RSP: 002b:00007ffe7201bb98 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 26.277246][ T298] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007ff0ff8a1667 [ 26.285319][ T298] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe7201bc50 [ 26.293299][ T298] RBP: 00007ffe7201bc50 R08: 00007ffe7201cc50 R09: 00000000ffffffff [ 26.301292][ T298] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffe7201ccc0 [ 26.309260][ T298] R13: 000055557e8ed7e0 R14: 431bde82d7b634db R15: 00007ffe7201cce0 [ 26.317250][ T298] ---[ end trace 964a3cc3247b53c7 ]--- [ 26.322750][ T298] ================================================================== [ 26.330900][ T298] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60 [ 26.337205][ T298] Write of size 4 at addr 0000000000000170 by task syz-executor323/298 [ 26.345415][ T298] [ 26.347815][ T298] CPU: 0 PID: 298 Comm: syz-executor323 Tainted: G W syzkaller #0 [ 26.357161][ T298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 26.367194][ T298] Call Trace: [ 26.370473][ T298] __dump_stack+0x21/0x24 [ 26.374785][ T298] dump_stack_lvl+0x1a7/0x208 [ 26.379443][ T298] ? thaw_kernel_threads+0x220/0x220 [ 26.384719][ T298] ? show_regs_print_info+0x18/0x18 [ 26.389901][ T298] ? _raw_spin_lock+0x94/0xf0 [ 26.394659][ T298] ? _raw_spin_trylock_bh+0x150/0x150 [ 26.400016][ T298] ? ihold+0x20/0x60 [ 26.403891][ T298] kasan_report+0xbd/0x140 [ 26.408300][ T298] ? ihold+0x20/0x60 [ 26.412180][ T298] kasan_check_range+0x249/0x2a0 [ 26.417110][ T298] __kasan_check_write+0x14/0x20 [ 26.422124][ T298] ihold+0x20/0x60 [ 26.425828][ T298] vfs_rmdir+0x2d5/0x3c0 [ 26.430049][ T298] incfs_kill_sb+0xf7/0x200 [ 26.434542][ T298] deactivate_locked_super+0xa0/0x100 [ 26.439895][ T298] deactivate_super+0xaf/0xe0 [ 26.444554][ T298] cleanup_mnt+0x44f/0x500 [ 26.448956][ T298] __cleanup_mnt+0x19/0x20 [ 26.453353][ T298] task_work_run+0x127/0x190 [ 26.457930][ T298] ptrace_notify+0x230/0x270 [ 26.462514][ T298] ? do_notify_parent+0x810/0x810 [ 26.467534][ T298] ? user_path_at_empty+0x43/0x50 [ 26.472537][ T298] ? __x64_sys_umount+0x12d/0x170 [ 26.477543][ T298] ? path_umount+0xfa0/0xfa0 [ 26.482123][ T298] syscall_exit_work+0x6e/0x140 [ 26.486954][ T298] syscall_exit_to_user_mode+0x2f/0x40 [ 26.492397][ T298] do_syscall_64+0x3d/0x40 [ 26.496883][ T298] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 26.502854][ T298] RIP: 0033:0x7ff0ff8a1667 [ 26.507252][ T298] Code: bf 41 4d 56 53 b8 9d 00 00 00 0f 05 83 f8 ea 75 a2 c7 05 24 04 09 00 00 00 00 00 eb 96 e8 d1 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 [ 26.526849][ T298] RSP: 002b:00007ffe7201bb98 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 26.535268][ T298] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007ff0ff8a1667 [ 26.543227][ T298] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe7201bc50 [ 26.551205][ T298] RBP: 00007ffe7201bc50 R08: 00007ffe7201cc50 R09: 00000000ffffffff [ 26.559417][ T298] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffe7201ccc0 [ 26.567383][ T298] R13: 000055557e8ed7e0 R14: 431bde82d7b634db R15: 00007ffe7201cce0 [ 26.575347][ T298] ================================================================== [ 26.583384][ T298] Disabling lock debugging due to kernel taint [ 26.589613][ T298] BUG: kernel NULL pointer dereference, address: 0000000000000170 [ 26.597487][ T298] #PF: supervisor write access in kernel mode [ 26.603593][ T298] #PF: error_code(0x0002) - not-present page [ 26.609554][ T298] PGD 0 P4D 0 [ 26.612917][ T298] Oops: 0002 [#1] PREEMPT SMP KASAN [ 26.618101][ T298] CPU: 0 PID: 298 Comm: syz-executor323 Tainted: G B W syzkaller #0 [ 26.627201][ T298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 26.637357][ T298] RIP: 0010:ihold+0x26/0x60 [ 26.641932][ 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 [ 26.661620][ T298] RSP: 0018:ffffc90000b97c50 EFLAGS: 00010246 [ 26.667676][ T298] RAX: ffff88810ac42700 RBX: 0000000000000000 RCX: ffff88810ac42780 [ 26.675643][ T298] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff [ 26.683783][ T298] RBP: ffffc90000b97c60 R08: 0000000000000003 R09: 0000000000000004 [ 26.691842][ T298] R10: dffffc0000000000 R11: fffffbfff0dcf648 R12: dffffc0000000000 [ 26.699808][ T298] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 [ 26.707774][ T298] FS: 000055557e8ec480(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 26.716695][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.723268][ T298] CR2: 0000000000000170 CR3: 00000001055c1000 CR4: 00000000003506b0 [ 26.731232][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.739193][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.747152][ T298] Call Trace: [ 26.750436][ T298] vfs_rmdir+0x2d5/0x3c0 [ 26.754674][ T298] incfs_kill_sb+0xf7/0x200 [ 26.759168][ T298] deactivate_locked_super+0xa0/0x100 [ 26.764531][ T298] deactivate_super+0xaf/0xe0 [ 26.769202][ T298] cleanup_mnt+0x44f/0x500 [ 26.773613][ T298] __cleanup_mnt+0x19/0x20 [ 26.778022][ T298] task_work_run+0x127/0x190 [ 26.782607][ T298] ptrace_notify+0x230/0x270 [ 26.787191][ T298] ? do_notify_parent+0x810/0x810 [ 26.792394][ T298] ? user_path_at_empty+0x43/0x50 [ 26.797411][ T298] ? __x64_sys_umount+0x12d/0x170 [ 26.802425][ T298] ? path_umount+0xfa0/0xfa0 [ 26.807016][ T298] syscall_exit_work+0x6e/0x140 [ 26.811857][ T298] syscall_exit_to_user_mode+0x2f/0x40 [ 26.817308][ T298] do_syscall_64+0x3d/0x40 [ 26.821817][ T298] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 26.827701][ T298] RIP: 0033:0x7ff0ff8a1667 [ 26.832105][ T298] Code: bf 41 4d 56 53 b8 9d 00 00 00 0f 05 83 f8 ea 75 a2 c7 05 24 04 09 00 00 00 00 00 eb 96 e8 d1 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 [ 26.851705][ T298] RSP: 002b:00007ffe7201bb98 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 26.860119][ T298] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007ff0ff8a1667 [ 26.868082][ T298] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe7201bc50 [ 26.876057][ T298] RBP: 00007ffe7201bc50 R08: 00007ffe7201cc50 R09: 00000000ffffffff [ 26.884020][ T298] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffe7201ccc0 [ 26.892044][ T298] R13: 000055557e8ed7e0 R14: 431bde82d7b634db R15: 00007ffe7201cce0 [ 26.900108][ T298] Modules linked in: [ 26.904009][ T298] CR2: 0000000000000170 [ 26.908170][ T298] ---[ end trace 964a3cc3247b53c8 ]--- [ 26.913632][ T298] RIP: 0010:ihold+0x26/0x60 [ 26.918131][ 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 [ 26.937733][ T298] RSP: 0018:ffffc90000b97c50 EFLAGS: 00010246 [ 26.943882][ T298] RAX: ffff88810ac42700 RBX: 0000000000000000 RCX: ffff88810ac42780 [ 26.951948][ T298] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff [ 26.959950][ T298] RBP: ffffc90000b97c60 R08: 0000000000000003 R09: 0000000000000004 [ 26.967926][ T298] R10: dffffc0000000000 R11: fffffbfff0dcf648 R12: dffffc0000000000 [ 26.975898][ T298] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 [ 26.983873][ T298] FS: 000055557e8ec480(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 26.992797][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.999374][ T298] CR2: 0000000000000170 CR3: 00000001055c1000 CR4: 00000000003506b0 [ 27.007341][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.015394][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.023361][ T298] Kernel panic - not syncing: Fatal exception [ 27.029480][ T298] Kernel Offset: disabled [ 27.033799][ T298] Rebooting in 86400 seconds..