ci2-android-5-10/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-android-5-10/syz-executor133189368 <...> rocess permissive=1 [ 11.309072][ T24] audit: type=1400 audit(1786024896.560:63): avc: denied { siginh } for pid=214 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.1.15' (ED25519) to the list of known hosts. execve("ci2-android-5-10/syz-executor133189368", ["ci2-android-5-10/syz-executor133189368"], 0x7ffda08bf670 /* 10 vars */) = 0 brk(NULL) = 0x555561652000 brk(0x555561652d40) = 0x555561652d40 arch_prctl(ARCH_SET_FS, 0x5555616523c0) = 0 set_tid_address(0x555561652690) = 297 set_robust_list(0x5555616526a0, 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-executor133189368", 4096) = 44 getrandom("\xf2\x35\xdf\xa4\x5a\x8f\x98\xe0", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555561652d40 brk(0x555561673d40) = 0x555561673d40 brk(0x555561674000) = 0x555561674000 mprotect(0x7f9d0dfc8000, 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("\x0b\x35\xe2\x3a\xde\x62\xca\x78", 8, GRND_NONBLOCK) = 8 mkdir("./syzkaller.h2awad", 0700) = 0 chmod("./syzkaller.h2awad", 0777) = 0 chdir("./syzkaller.h2awad") = 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=0x555561652690) = 298 ci2-android-5-10/strace-static-x86_64: Process 298 attached [pid 298] set_robust_list(0x5555616526a0, 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 [pid 297] rt_sigprocmask(SIG_SETMASK, [] [pid 298] <... mount resumed>) = 0 [pid 297] <... rt_sigprocmask resumed>, NULL, 8) = 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 [ 21.031074][ T298] RSP: 0018:ffffc90000b37c10 EFLAGS: 00010293 [ 21.037156][ T298] RAX: ffffffff81ad1d85 RBX: ffff88810ae9a4a0 RCX: ffff88812186cf00 [ 21.045136][ T298] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 21.053122][ T298] RBP: ffffc90000b37c38 R08: 0000000000000003 R09: 0000000000000004 [ 21.061101][ T298] R10: dffffc0000000000 R11: fffff52000166f70 R12: dffffc0000000000 [ 21.069088][ T298] R13: 1ffff110215d349d R14: ffff88810ae9a4e8 R15: 0000000000000000 [ 21.078649][ T298] FS: 00005555616523c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 21.087776][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.094408][ T298] CR2: 000055c483086758 CR3: 000000010950b000 CR4: 00000000003506b0 [ 21.102404][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.110450][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.118547][ T298] Call Trace: [ 21.121820][ T298] shmem_rmdir+0x5b/0x90 [ 21.126043][ T298] vfs_rmdir+0x1ab/0x3c0 [ 21.130309][ T298] incfs_kill_sb+0xf7/0x200 [ 21.134805][ T298] deactivate_locked_super+0xa0/0x100 [ 21.140192][ T298] deactivate_super+0xaf/0xe0 [ 21.144878][ T298] cleanup_mnt+0x44f/0x500 [ 21.149304][ T298] __cleanup_mnt+0x19/0x20 [ 21.153733][ T298] task_work_run+0x127/0x190 [ 21.158330][ T298] ptrace_notify+0x230/0x270 [ 21.162914][ T298] ? do_notify_parent+0x810/0x810 [ 21.167934][ T298] ? user_path_at_empty+0x43/0x50 [ 21.173187][ T298] ? __x64_sys_umount+0x12d/0x170 [ 21.178218][ T298] ? path_umount+0xfa0/0xfa0 [ 21.183003][ T298] syscall_exit_work+0x6e/0x140 [ 21.187843][ T298] syscall_exit_to_user_mode+0x2f/0x40 [ 21.193351][ T298] do_syscall_64+0x3d/0x40 [ 21.197782][ T298] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 21.203705][ T298] RIP: 0033:0x7f9d0df35527 [ 21.208177][ T298] 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 [ 21.227813][ T298] RSP: 002b:00007ffc5ba7afb8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 21.236241][ T298] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f9d0df35527 [ 21.244223][ T298] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc5ba7b070 [ 21.252210][ T298] RBP: 00007ffc5ba7b070 R08: 00007ffc5ba7c070 R09: 00000000ffffffff [ 21.260190][ T298] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffc5ba7c0e0 [ 21.268181][ T298] R13: 0000555561653720 R14: 00007ffc5ba7c0e0 R15: 0000000000000001 [ 21.276137][ T298] ---[ end trace b4d0f82eb48ba186 ]--- [ 21.281650][ T298] ================================================================== [ 21.289733][ T298] BUG: KASAN: null-ptr-deref in ihold+0x20/0x60 [ 21.295954][ T298] Write of size 4 at addr 0000000000000170 by task syz-executor133/298 [ 21.304172][ T298] [ 21.306487][ T298] CPU: 0 PID: 298 Comm: syz-executor133 Tainted: G W syzkaller #0 [ 21.315566][ T298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 21.325613][ T298] Call Trace: [ 21.328885][ T298] __dump_stack+0x21/0x24 [ 21.333201][ T298] dump_stack_lvl+0x1a7/0x208 [ 21.337857][ T298] ? thaw_kernel_threads+0x220/0x220 [ 21.343134][ T298] ? show_regs_print_info+0x18/0x18 [ 21.348321][ T298] ? _raw_spin_lock+0x94/0xf0 [ 21.352975][ T298] ? _raw_spin_trylock_bh+0x150/0x150 [ 21.358332][ T298] ? ihold+0x20/0x60 [ 21.362204][ T298] kasan_report+0xbd/0x140 [ 21.366600][ T298] ? ihold+0x20/0x60 [ 21.370482][ T298] kasan_check_range+0x249/0x2a0 [ 21.375401][ T298] __kasan_check_write+0x14/0x20 [ 21.380321][ T298] ihold+0x20/0x60 [ 21.384021][ T298] vfs_rmdir+0x2d5/0x3c0 [ 21.388246][ T298] incfs_kill_sb+0xf7/0x200 [ 21.392729][ T298] deactivate_locked_super+0xa0/0x100 [ 21.398081][ T298] deactivate_super+0xaf/0xe0 [ 21.402735][ T298] cleanup_mnt+0x44f/0x500 [ 21.407133][ T298] __cleanup_mnt+0x19/0x20 [ 21.411535][ T298] task_work_run+0x127/0x190 [ 21.416105][ T298] ptrace_notify+0x230/0x270 [ 21.420676][ T298] ? do_notify_parent+0x810/0x810 [ 21.425679][ T298] ? user_path_at_empty+0x43/0x50 [ 21.430680][ T298] ? __x64_sys_umount+0x12d/0x170 [ 21.435683][ T298] ? path_umount+0xfa0/0xfa0 [ 21.440275][ T298] syscall_exit_work+0x6e/0x140 [ 21.445104][ T298] syscall_exit_to_user_mode+0x2f/0x40 [ 21.450543][ T298] do_syscall_64+0x3d/0x40 [ 21.454943][ T298] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 21.460812][ T298] RIP: 0033:0x7f9d0df35527 [ 21.465206][ T298] 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 [ 21.484792][ T298] RSP: 002b:00007ffc5ba7afb8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 21.493186][ T298] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f9d0df35527 [ 21.501142][ T298] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc5ba7b070 [ 21.509111][ T298] RBP: 00007ffc5ba7b070 R08: 00007ffc5ba7c070 R09: 00000000ffffffff [ 21.517078][ T298] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffc5ba7c0e0 [ 21.525028][ T298] R13: 0000555561653720 R14: 00007ffc5ba7c0e0 R15: 0000000000000001 [ 21.532994][ T298] ================================================================== [ 21.541033][ T298] Disabling lock debugging due to kernel taint [ 21.547237][ T298] BUG: kernel NULL pointer dereference, address: 0000000000000170 [ 21.555033][ T298] #PF: supervisor write access in kernel mode [ 21.561080][ T298] #PF: error_code(0x0002) - not-present page [ 21.567034][ T298] PGD 0 P4D 0 [ 21.570396][ T298] Oops: 0002 [#1] PREEMPT SMP KASAN [ 21.575573][ T298] CPU: 0 PID: 298 Comm: syz-executor133 Tainted: G B W syzkaller #0 [ 21.584655][ T298] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 21.594722][ T298] RIP: 0010:ihold+0x26/0x60 [ 21.599204][ 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 [ 21.618789][ T298] RSP: 0018:ffffc90000b37c50 EFLAGS: 00010246 [ 21.624834][ T298] RAX: ffff88812186cf00 RBX: 0000000000000000 RCX: ffff88812186cf00 [ 21.632796][ T298] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff [ 21.640747][ T298] RBP: ffffc90000b37c60 R08: 0000000000000003 R09: 0000000000000004 [ 21.648701][ T298] R10: dffffc0000000000 R11: fffffbfff0dcf648 R12: dffffc0000000000 [ 21.656653][ T298] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 [ 21.664604][ T298] FS: 00005555616523c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 21.673511][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.680072][ T298] CR2: 0000000000000170 CR3: 000000010950b000 CR4: 00000000003506b0 [ 21.688029][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.695981][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.703929][ T298] Call Trace: [ 21.707210][ T298] vfs_rmdir+0x2d5/0x3c0 [ 21.711431][ T298] incfs_kill_sb+0xf7/0x200 [ 21.715911][ T298] deactivate_locked_super+0xa0/0x100 [ 21.721407][ T298] deactivate_super+0xaf/0xe0 [ 21.726094][ T298] cleanup_mnt+0x44f/0x500 [ 21.730508][ T298] __cleanup_mnt+0x19/0x20 [ 21.734908][ T298] task_work_run+0x127/0x190 [ 21.739497][ T298] ptrace_notify+0x230/0x270 [ 21.744073][ T298] ? do_notify_parent+0x810/0x810 [ 21.749078][ T298] ? user_path_at_empty+0x43/0x50 [ 21.754100][ T298] ? __x64_sys_umount+0x12d/0x170 [ 21.759104][ T298] ? path_umount+0xfa0/0xfa0 [ 21.763678][ T298] syscall_exit_work+0x6e/0x140 [ 21.768510][ T298] syscall_exit_to_user_mode+0x2f/0x40 [ 21.773946][ T298] do_syscall_64+0x3d/0x40 [ 21.778345][ T298] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 21.784221][ T298] RIP: 0033:0x7f9d0df35527 [ 21.788629][ T298] 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 [ 21.808231][ T298] RSP: 002b:00007ffc5ba7afb8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 21.816631][ T298] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f9d0df35527 [ 21.824583][ T298] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc5ba7b070 [ 21.832535][ T298] RBP: 00007ffc5ba7b070 R08: 00007ffc5ba7c070 R09: 00000000ffffffff [ 21.840488][ T298] R10: 0000000000000000 R11: 0000000000000206 R12: 00007ffc5ba7c0e0 [ 21.848441][ T298] R13: 0000555561653720 R14: 00007ffc5ba7c0e0 R15: 0000000000000001 [ 21.856390][ T298] Modules linked in: [ 21.860269][ T298] CR2: 0000000000000170 [ 21.864405][ T298] ---[ end trace b4d0f82eb48ba187 ]--- [ 21.869846][ T298] RIP: 0010:ihold+0x26/0x60 [ 21.874328][ 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 [ 21.893913][ T298] RSP: 0018:ffffc90000b37c50 EFLAGS: 00010246 [ 21.899959][ T298] RAX: ffff88812186cf00 RBX: 0000000000000000 RCX: ffff88812186cf00 [ 21.907908][ T298] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 00000000ffffffff [ 21.915862][ T298] RBP: ffffc90000b37c60 R08: 0000000000000003 R09: 0000000000000004 [ 21.923814][ T298] R10: dffffc0000000000 R11: fffffbfff0dcf648 R12: dffffc0000000000 [ 21.931766][ T298] R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 [ 21.939718][ T298] FS: 00005555616523c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 21.948630][ T298] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.955191][ T298] CR2: 0000000000000170 CR3: 000000010950b000 CR4: 00000000003506b0 [ 21.963144][ T298] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.971245][ T298] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.979223][ T298] Kernel panic - not syncing: Fatal exception [ 21.985354][ T298] Kernel Offset: disabled [ 21.989671][ T298] Rebooting in 86400 seconds..