ci2-android-5-10/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-5-10/syz-executor3464077316 <...> Warning: Permanently added '10.128.0.242' (ED25519) to the list of known hosts. execve("ci2-android-5-10/syz-executor3464077316", ["ci2-android-5-10/syz-executor3464077316"], 0x7ffe423f0f50 /* 10 vars */) = 0 brk(NULL) = 0x55555a31c000 brk(0x55555a31ce00) = 0x55555a31ce00 arch_prctl(ARCH_SET_FS, 0x55555a31c480) = 0 set_tid_address(0x55555a31c750) = 297 set_robust_list(0x55555a31c760, 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-executor3464077316", 4096) = 45 getrandom("\x03\x12\x51\xe3\x2b\x90\xc7\x5f", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555a31ce00 brk(0x55555a33de00) = 0x55555a33de00 brk(0x55555a33e000) = 0x55555a33e000 mprotect(0x7f3e12382000, 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=0x7f3e122d9eb0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f3e122dd550}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f3e122d9eb0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f3e122dd550}, NULL, 8) = 0 getrandom("\x66\xce\x58\xf4\x48\x04\x2b\x1d", 8, GRND_NONBLOCK) = 8 mkdir("./syzkaller.oEdheS", 0700) = 0 chmod("./syzkaller.oEdheS", 0777) = 0 chdir("./syzkaller.oEdheS") = 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=0x55555a31c750) = 298 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 ci2-android-5-10/strace-static-x86_64: Process 298 attached [pid 298] set_robust_list(0x55555a31c760, 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 [ 25.311882][ T298] RSP: 0018:ffffc90000b87c10 EFLAGS: 00010293 [ 25.318029][ T298] RAX: ffffffff81ad2015 RBX: ffff88810b093320 RCX: ffff8881220ee2c0 [ 25.326142][ T298] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 25.334379][ T298] RBP: ffffc90000b87c38 R08: 0000000000000003 R09: 0000000000000004 [ 25.342813][ T298] R10: dffffc0000000000 R11: fffff52000170f70 R12: dffffc0000000000 [ 25.351315][ T298] R13: 1ffff1102161266d R14: ffff88810b093368 R15: 0000000000000000 [ 25.359425][ T298] FS: 000055555a31c480(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 25.368399][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.375026][ T298] CR2: 000055555a32d858 CR3: 0000000122056000 CR4: 00000000003506a0 [ 25.383109][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.391709][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.400573][ T298] Call Trace: [ 25.404274][ T298] shmem_rmdir+0x5b/0x90 [ 25.409263][ T298] vfs_rmdir+0x1ab/0x3c0 [ 25.414140][ T298] incfs_kill_sb+0xf7/0x200 [ 25.419276][ T298] deactivate_locked_super+0xa0/0x100 [ 25.425091][ T298] deactivate_super+0xaf/0xe0 [ 25.429853][ T298] cleanup_mnt+0x44f/0x500 [ 25.434337][ T298] __cleanup_mnt+0x19/0x20 [ 25.438830][ T298] task_work_run+0x127/0x190 [ 25.443660][ T298] ptrace_notify+0x230/0x270 [ 25.448647][ T298] ? do_notify_parent+0x810/0x810 [ 25.454132][ T298] ? user_path_at_empty+0x43/0x50 [ 25.459509][ T298] ? __x64_sys_umount+0x12d/0x170 [ 25.465521][ T298] ? path_umount+0xfa0/0xfa0 [ 25.470940][ T298] syscall_exit_work+0x6e/0x140 [ 25.477357][ T298] syscall_exit_to_user_mode+0x2f/0x40 [ 25.485109][ T298] do_syscall_64+0x3d/0x40 [ 25.490868][ T298] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 25.501512][ T298] RIP: 0033:0x7f3e122f7667 [ 25.507225][ 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 [ 25.528114][ T298] RSP: 002b:00007ffe091c67c8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 25.537272][ T298] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f3e122f7667 [ 25.545757][ T298] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe091c6880 [ 25.554489][ T298] RBP: 00007ffe091c6880 R08: 00007ffe091c7880 R09: 00000000ffffffff [ 25.562854][ T298] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffe091c78f0 [ 25.571059][ T298] R13: 000055555a31d7e0 R14: 431bde82d7b634db R15: 00007ffe091c7910 [ 25.579249][ T298] ---[ end trace d26bd46b18e6b621 ]--- [ 25.584935][ T298] ================================================================== [ 25.593103][ T298] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60 [ 25.599993][ T298] Write of size 4 at addr 0000000000000170 by task syz-executor346/298 [ 25.608813][ T298] [ 25.611148][ T298] CPU: 1 PID: 298 Comm: syz-executor346 Tainted: G W syzkaller #0 [ 25.620772][ T298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 25.631123][ T298] Call Trace: [ 25.634596][ T298] __dump_stack+0x21/0x24 [ 25.639149][ T298] dump_stack_lvl+0x1a7/0x208 [ 25.643828][ T298] ? thaw_kernel_threads+0x220/0x220 [ 25.649497][ T298] ? show_regs_print_info+0x18/0x18 [ 25.655019][ T298] ? _raw_spin_lock+0x94/0xf0 [ 25.659883][ T298] ? _raw_spin_trylock_bh+0x150/0x150 [ 25.665350][ T298] ? ihold+0x20/0x60 [ 25.669361][ T298] kasan_report+0xbd/0x140 [ 25.674153][ T298] ? ihold+0x20/0x60 [ 25.678087][ T298] kasan_check_range+0x249/0x2a0 [ 25.683034][ T298] __kasan_check_write+0x14/0x20 [ 25.688413][ T298] ihold+0x20/0x60 [ 25.692147][ T298] vfs_rmdir+0x2d5/0x3c0 [ 25.696383][ T298] incfs_kill_sb+0xf7/0x200 [ 25.701014][ T298] deactivate_locked_super+0xa0/0x100 [ 25.706431][ T298] deactivate_super+0xaf/0xe0 [ 25.711481][ T298] cleanup_mnt+0x44f/0x500 [ 25.715997][ T298] __cleanup_mnt+0x19/0x20 [ 25.720406][ T298] task_work_run+0x127/0x190 [ 25.725068][ T298] ptrace_notify+0x230/0x270 [ 25.729758][ T298] ? do_notify_parent+0x810/0x810 [ 25.735034][ T298] ? user_path_at_empty+0x43/0x50 [ 25.740712][ T298] ? __x64_sys_umount+0x12d/0x170 [ 25.746760][ T298] ? path_umount+0xfa0/0xfa0 [ 25.752656][ T298] syscall_exit_work+0x6e/0x140 [ 25.758264][ T298] syscall_exit_to_user_mode+0x2f/0x40 [ 25.764538][ T298] do_syscall_64+0x3d/0x40 [ 25.769459][ T298] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 25.775352][ T298] RIP: 0033:0x7f3e122f7667 [ 25.780149][ 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 [ 25.800899][ T298] RSP: 002b:00007ffe091c67c8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 25.810165][ T298] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f3e122f7667 [ 25.818127][ T298] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe091c6880 [ 25.826171][ T298] RBP: 00007ffe091c6880 R08: 00007ffe091c7880 R09: 00000000ffffffff [ 25.834404][ T298] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffe091c78f0 [ 25.842462][ T298] R13: 000055555a31d7e0 R14: 431bde82d7b634db R15: 00007ffe091c7910 [ 25.850899][ T298] ================================================================== [ 25.859431][ T298] Disabling lock debugging due to kernel taint [ 25.866152][ T298] BUG: kernel NULL pointer dereference, address: 0000000000000170 [ 25.874343][ T298] #PF: supervisor write access in kernel mode [ 25.880580][ T298] #PF: error_code(0x0002) - not-present page [ 25.886661][ T298] PGD 0 P4D 0 [ 25.890052][ T298] Oops: 0002 [#1] PREEMPT SMP KASAN [ 25.897807][ T298] CPU: 1 PID: 298 Comm: syz-executor346 Tainted: G B W syzkaller #0 [ 25.907267][ T298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 25.917679][ T298] RIP: 0010:ihold+0x26/0x60 [ 25.922460][ T298] Code: 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8 e1 7d 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 61 [ 25.942064][ T298] RSP: 0018:ffffc90000b87c50 EFLAGS: 00010246 [ 25.948143][ T298] RAX: ffff8881220ee200 RBX: 0000000000000000 RCX: ffff8881220ee2c0 [ 25.956117][ T298] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff [ 25.964345][ T298] RBP: ffffc90000b87c60 R08: 0000000000000003 R09: 0000000000000004 [ 25.972313][ T298] R10: dffffc0000000000 R11: fffffbfff0dcf648 R12: dffffc0000000000 [ 25.980292][ T298] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 [ 25.988621][ T298] FS: 000055555a31c480(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 25.997546][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.004220][ T298] CR2: 0000000000000170 CR3: 0000000122056000 CR4: 00000000003506a0 [ 26.012296][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.020277][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.028238][ T298] Call Trace: [ 26.031632][ T298] vfs_rmdir+0x2d5/0x3c0 [ 26.035866][ T298] incfs_kill_sb+0xf7/0x200 [ 26.040374][ T298] deactivate_locked_super+0xa0/0x100 [ 26.046114][ T298] deactivate_super+0xaf/0xe0 [ 26.051063][ T298] cleanup_mnt+0x44f/0x500 [ 26.055470][ T298] __cleanup_mnt+0x19/0x20 [ 26.059873][ T298] task_work_run+0x127/0x190 [ 26.064837][ T298] ptrace_notify+0x230/0x270 [ 26.069448][ T298] ? do_notify_parent+0x810/0x810 [ 26.074473][ T298] ? user_path_at_empty+0x43/0x50 [ 26.079497][ T298] ? __x64_sys_umount+0x12d/0x170 [ 26.085159][ T298] ? path_umount+0xfa0/0xfa0 [ 26.089783][ T298] syscall_exit_work+0x6e/0x140 [ 26.094703][ T298] syscall_exit_to_user_mode+0x2f/0x40 [ 26.100198][ T298] do_syscall_64+0x3d/0x40 [ 26.104892][ T298] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 26.110821][ T298] RIP: 0033:0x7f3e122f7667 [ 26.115282][ 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 [ 26.135149][ T298] RSP: 002b:00007ffe091c67c8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 26.143558][ T298] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f3e122f7667 [ 26.151636][ T298] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe091c6880 [ 26.160251][ T298] RBP: 00007ffe091c6880 R08: 00007ffe091c7880 R09: 00000000ffffffff [ 26.168770][ T298] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffe091c78f0 [ 26.176850][ T298] R13: 000055555a31d7e0 R14: 431bde82d7b634db R15: 00007ffe091c7910 [ 26.184818][ T298] Modules linked in: [ 26.188892][ T298] CR2: 0000000000000170 [ 26.193133][ T298] ---[ end trace d26bd46b18e6b622 ]--- [ 26.198764][ T298] RIP: 0010:ihold+0x26/0x60 [ 26.203637][ T298] Code: 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8 e1 7d 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 61 [ 26.223780][ T298] RSP: 0018:ffffc90000b87c50 EFLAGS: 00010246 [ 26.230306][ T298] RAX: ffff8881220ee200 RBX: 0000000000000000 RCX: ffff8881220ee2c0 [ 26.238408][ T298] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff [ 26.246468][ T298] RBP: ffffc90000b87c60 R08: 0000000000000003 R09: 0000000000000004 [ 26.254523][ T298] R10: dffffc0000000000 R11: fffffbfff0dcf648 R12: dffffc0000000000 [ 26.262498][ T298] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 [ 26.270468][ T298] FS: 000055555a31c480(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 26.279483][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.286842][ T298] CR2: 0000000000000170 CR3: 0000000122056000 CR4: 00000000003506a0 [ 26.294913][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.303201][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.311265][ T298] Kernel panic - not syncing: Fatal exception [ 26.317655][ T298] Kernel Offset: disabled [ 26.321976][ T298] Rebooting in 86400 seconds..