ci2-android-6-1/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-6-1/syz-executor2707445464 <...> Warning: Permanently added '10.128.1.129' (ED25519) to the list of known hosts. execve("ci2-android-6-1/syz-executor2707445464", ["ci2-android-6-1/syz-executor2707445464"], 0x7fff8b96f950 /* 10 vars */) = 0 brk(NULL) = 0x55558782d000 brk(0x55558782de00) = 0x55558782de00 arch_prctl(ARCH_SET_FS, 0x55558782d480) = 0 set_tid_address(0x55558782d750) = 305 set_robust_list(0x55558782d760, 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-executor2707445464", 4096) = 44 getrandom("\xc9\x42\x2f\xbe\xdc\x34\x60\x48", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558782de00 brk(0x55558784ee00) = 0x55558784ee00 brk(0x55558784f000) = 0x55558784f000 mprotect(0x7ff3a3a71000, 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=0x7ff3a39c8ed0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7ff3a39cc580}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7ff3a39c8ed0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7ff3a39cc580}, NULL, 8) = 0 getrandom("\x2e\xed\xe7\xf4\xbc\x99\x3e\xe9", 8, GRND_NONBLOCK) = 8 mkdir("./syzkaller.w2ppuC", 0700) = 0 chmod("./syzkaller.w2ppuC", 0777) = 0 chdir("./syzkaller.w2ppuC") = 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=0x55558782d750) = 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(0x55558782d760, 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 [ 25.749499][ T306] RSP: 0018:ffffc90000df7b60 EFLAGS: 00010293 [ 25.755590][ T306] RAX: ffffffff81c66155 RBX: ffff8881239e8448 RCX: ffff88810f4e6540 [ 25.763627][ T306] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 25.771834][ T306] RBP: ffffc90000df7b88 R08: 0000000000000003 R09: 0000000000000004 [ 25.779908][ T306] R10: dffffc0000000000 R11: fffff520001bef5c R12: dffffc0000000000 [ 25.787908][ T306] R13: 1ffff1102473d092 R14: ffff8881239e8490 R15: 0000000000000000 [ 25.795960][ T306] FS: 000055558782d480(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 25.804949][ T306] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.811597][ T306] CR2: 000055b1e207a5c8 CR3: 000000010fa01000 CR4: 00000000003506b0 [ 25.819681][ T306] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.827672][ T306] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.835735][ T306] Call Trace: [ 25.839049][ T306] [ 25.842006][ T306] shmem_rmdir+0x5b/0x90 [ 25.846276][ T306] vfs_rmdir+0x381/0x4f0 [ 25.850588][ T306] incfs_kill_sb+0xfe/0x210 [ 25.855135][ T306] deactivate_locked_super+0xb5/0x120 [ 25.860568][ T306] deactivate_super+0xaf/0xe0 [ 25.865279][ T306] cleanup_mnt+0x45e/0x4e0 [ 25.869740][ T306] __cleanup_mnt+0x19/0x20 [ 25.874182][ T306] task_work_run+0x1e1/0x250 [ 25.878827][ T306] ? __cfi_task_work_run+0x10/0x10 [ 25.884001][ T306] ? path_umount+0x345/0xf60 [ 25.888674][ T306] ? __kasan_slab_free+0x11/0x20 [ 25.893647][ T306] ptrace_notify+0x23f/0x270 [ 25.898304][ T306] ? __cfi_path_umount+0x10/0x10 [ 25.903278][ T306] ? __cfi_ptrace_notify+0x10/0x10 [ 25.908454][ T306] ? user_path_at_empty+0x162/0x1c0 [ 25.913690][ T306] ? __x64_sys_umount+0x12d/0x170 [ 25.918782][ T306] ? __cfi___x64_sys_umount+0x10/0x10 [ 25.924195][ T306] ? fpregs_restore_userregs+0x128/0x260 [ 25.929915][ T306] syscall_exit_work+0x84/0x140 [ 25.934796][ T306] syscall_exit_to_user_mode_prepare+0x1c/0x20 [ 25.941041][ T306] syscall_exit_to_user_mode+0xd/0x30 [ 25.946449][ T306] do_syscall_64+0x58/0xa0 [ 25.950923][ T306] ? clear_bhb_loop+0x30/0x80 [ 25.955625][ T306] ? clear_bhb_loop+0x30/0x80 [ 25.960355][ T306] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 25.966358][ T306] RIP: 0033:0x7ff3a39e66a7 [ 25.970841][ T306] Code: bf 41 4d 56 53 b8 9d 00 00 00 0f 05 83 f8 ea 75 a2 c7 05 e4 03 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 [ 25.990483][ T306] RSP: 002b:00007ffe3ea593e8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 25.998941][ T306] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007ff3a39e66a7 [ 26.007052][ T306] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe3ea594a0 [ 26.015110][ T306] RBP: 00007ffe3ea594a0 R08: 00007ffe3ea5a4a0 R09: 00000000ffffffff [ 26.023135][ T306] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffe3ea5a510 [ 26.031178][ T306] R13: 000055558782e7e0 R14: 431bde82d7b634db R15: 00007ffe3ea5a530 [ 26.039195][ T306] [ 26.042231][ T306] ---[ end trace 0000000000000000 ]--- [ 26.047813][ T306] ================================================================== [ 26.055903][ T306] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60 [ 26.062152][ T306] Write of size 4 at addr 0000000000000170 by task syz-executor270/306 [ 26.070388][ T306] [ 26.072715][ T306] CPU: 1 PID: 306 Comm: syz-executor270 Tainted: G W syzkaller #0 [ 26.081993][ T306] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 26.092061][ T306] Call Trace: [ 26.095344][ T306] [ 26.098278][ T306] __dump_stack+0x21/0x24 [ 26.102606][ T306] dump_stack_lvl+0x110/0x170 [ 26.107276][ T306] ? __cfi_dump_stack_lvl+0x8/0x8 [ 26.112298][ T306] ? __cfi_call_rcu+0x10/0x10 [ 26.116988][ T306] ? ihold+0x20/0x60 [ 26.120892][ T306] ? ihold+0x20/0x60 [ 26.124789][ T306] print_report+0x3d/0x60 [ 26.129126][ T306] kasan_report+0x122/0x150 [ 26.133631][ T306] ? ihold+0x20/0x60 [ 26.137525][ T306] kasan_check_range+0x249/0x2a0 [ 26.142478][ T306] __kasan_check_write+0x14/0x20 [ 26.147413][ T306] ihold+0x20/0x60 [ 26.151136][ T306] vfs_rmdir+0x24c/0x4f0 [ 26.155386][ T306] incfs_kill_sb+0xfe/0x210 [ 26.159892][ T306] deactivate_locked_super+0xb5/0x120 [ 26.165284][ T306] deactivate_super+0xaf/0xe0 [ 26.169979][ T306] cleanup_mnt+0x45e/0x4e0 [ 26.174420][ T306] __cleanup_mnt+0x19/0x20 [ 26.178838][ T306] task_work_run+0x1e1/0x250 [ 26.183460][ T306] ? __cfi_task_work_run+0x10/0x10 [ 26.188584][ T306] ? path_umount+0x345/0xf60 [ 26.193211][ T306] ? __kasan_slab_free+0x11/0x20 [ 26.198169][ T306] ptrace_notify+0x23f/0x270 [ 26.202857][ T306] ? __cfi_path_umount+0x10/0x10 [ 26.207822][ T306] ? __cfi_ptrace_notify+0x10/0x10 [ 26.212957][ T306] ? user_path_at_empty+0x162/0x1c0 [ 26.218182][ T306] ? __x64_sys_umount+0x12d/0x170 [ 26.223236][ T306] ? __cfi___x64_sys_umount+0x10/0x10 [ 26.228626][ T306] ? fpregs_restore_userregs+0x128/0x260 [ 26.234274][ T306] syscall_exit_work+0x84/0x140 [ 26.239136][ T306] syscall_exit_to_user_mode_prepare+0x1c/0x20 [ 26.245308][ T306] syscall_exit_to_user_mode+0xd/0x30 [ 26.250700][ T306] do_syscall_64+0x58/0xa0 [ 26.255127][ T306] ? clear_bhb_loop+0x30/0x80 [ 26.259815][ T306] ? clear_bhb_loop+0x30/0x80 [ 26.264508][ T306] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 26.270422][ T306] RIP: 0033:0x7ff3a39e66a7 [ 26.274861][ T306] Code: bf 41 4d 56 53 b8 9d 00 00 00 0f 05 83 f8 ea 75 a2 c7 05 e4 03 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 [ 26.294469][ T306] RSP: 002b:00007ffe3ea593e8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 26.302886][ T306] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007ff3a39e66a7 [ 26.310862][ T306] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe3ea594a0 [ 26.318832][ T306] RBP: 00007ffe3ea594a0 R08: 00007ffe3ea5a4a0 R09: 00000000ffffffff [ 26.326808][ T306] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffe3ea5a510 [ 26.334781][ T306] R13: 000055558782e7e0 R14: 431bde82d7b634db R15: 00007ffe3ea5a530 [ 26.342757][ T306] [ 26.345780][ T306] ================================================================== [ 26.354026][ T306] Disabling lock debugging due to kernel taint [ 26.360247][ T306] BUG: kernel NULL pointer dereference, address: 0000000000000170 [ 26.368105][ T306] #PF: supervisor write access in kernel mode [ 26.374358][ T306] #PF: error_code(0x0002) - not-present page [ 26.380348][ T306] PGD 0 P4D 0 [ 26.383721][ T306] Oops: 0002 [#1] PREEMPT SMP KASAN [ 26.388914][ T306] CPU: 1 PID: 306 Comm: syz-executor270 Tainted: G B W syzkaller #0 [ 26.398140][ T306] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 [ 26.408222][ T306] RIP: 0010:ihold+0x26/0x60 [ 26.412730][ T306] 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 [ 26.432419][ T306] RSP: 0018:ffffc90000df7ba0 EFLAGS: 00010246 [ 26.438492][ T306] RAX: ffff88810f4e6500 RBX: 0000000000000000 RCX: ffff88810f4e6540 [ 26.446471][ T306] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 26.454455][ T306] RBP: ffffc90000df7bb0 R08: ffffffff87b777e7 R09: 1ffffffff0f6eefc [ 26.462436][ T306] R10: dffffc0000000000 R11: fffffbfff0f6eefd R12: ffff8881239e8454 [ 26.470408][ T306] R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000000 [ 26.478375][ T306] FS: 000055558782d480(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 26.487344][ T306] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.493947][ T306] CR2: 0000000000000170 CR3: 000000010fa01000 CR4: 00000000003506a0 [ 26.501953][ T306] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.509934][ T306] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.517919][ T306] Call Trace: [ 26.521294][ T306] [ 26.524240][ T306] vfs_rmdir+0x24c/0x4f0 [ 26.528502][ T306] incfs_kill_sb+0xfe/0x210 [ 26.533028][ T306] deactivate_locked_super+0xb5/0x120 [ 26.538402][ T306] deactivate_super+0xaf/0xe0 [ 26.543081][ T306] cleanup_mnt+0x45e/0x4e0 [ 26.547500][ T306] __cleanup_mnt+0x19/0x20 [ 26.551915][ T306] task_work_run+0x1e1/0x250 [ 26.556513][ T306] ? __cfi_task_work_run+0x10/0x10 [ 26.561649][ T306] ? path_umount+0x345/0xf60 [ 26.566252][ T306] ? __kasan_slab_free+0x11/0x20 [ 26.571193][ T306] ptrace_notify+0x23f/0x270 [ 26.575789][ T306] ? __cfi_path_umount+0x10/0x10 [ 26.580735][ T306] ? __cfi_ptrace_notify+0x10/0x10 [ 26.585851][ T306] ? user_path_at_empty+0x162/0x1c0 [ 26.591048][ T306] ? __x64_sys_umount+0x12d/0x170 [ 26.596085][ T306] ? __cfi___x64_sys_umount+0x10/0x10 [ 26.601470][ T306] ? fpregs_restore_userregs+0x128/0x260 [ 26.607128][ T306] syscall_exit_work+0x84/0x140 [ 26.611979][ T306] syscall_exit_to_user_mode_prepare+0x1c/0x20 [ 26.618147][ T306] syscall_exit_to_user_mode+0xd/0x30 [ 26.623541][ T306] do_syscall_64+0x58/0xa0 [ 26.627953][ T306] ? clear_bhb_loop+0x30/0x80 [ 26.632632][ T306] ? clear_bhb_loop+0x30/0x80 [ 26.637312][ T306] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 26.643206][ T306] RIP: 0033:0x7ff3a39e66a7 [ 26.647618][ T306] Code: bf 41 4d 56 53 b8 9d 00 00 00 0f 05 83 f8 ea 75 a2 c7 05 e4 03 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 [ 26.667224][ T306] RSP: 002b:00007ffe3ea593e8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 26.675640][ T306] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007ff3a39e66a7 [ 26.683629][ T306] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe3ea594a0 [ 26.691597][ T306] RBP: 00007ffe3ea594a0 R08: 00007ffe3ea5a4a0 R09: 00000000ffffffff [ 26.699568][ T306] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffe3ea5a510 [ 26.707624][ T306] R13: 000055558782e7e0 R14: 431bde82d7b634db R15: 00007ffe3ea5a530 [ 26.715598][ T306] [ 26.718611][ T306] Modules linked in: [ 26.722514][ T306] CR2: 0000000000000170 [ 26.726659][ T306] ---[ end trace 0000000000000000 ]--- [ 26.732133][ T306] RIP: 0010:ihold+0x26/0x60 [ 26.736639][ T306] 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 [ 26.756244][ T306] RSP: 0018:ffffc90000df7ba0 EFLAGS: 00010246 [ 26.762326][ T306] RAX: ffff88810f4e6500 RBX: 0000000000000000 RCX: ffff88810f4e6540 [ 26.770304][ T306] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 26.778274][ T306] RBP: ffffc90000df7bb0 R08: ffffffff87b777e7 R09: 1ffffffff0f6eefc [ 26.787000][ T306] R10: dffffc0000000000 R11: fffffbfff0f6eefd R12: ffff8881239e8454 [ 26.794985][ T306] R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000000 [ 26.802982][ T306] FS: 000055558782d480(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 26.811921][ T306] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.818953][ T306] CR2: 0000000000000170 CR3: 000000010fa01000 CR4: 00000000003506a0 [ 26.826947][ T306] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.834919][ T306] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.842899][ T306] Kernel panic - not syncing: Fatal exception [ 26.849570][ T306] Kernel Offset: disabled [ 26.853940][ T306] Rebooting in 86400 seconds..