./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor162279893 <...> Warning: Permanently added '10.128.0.121' (ED25519) to the list of known hosts. execve("./syz-executor162279893", ["./syz-executor162279893"], 0x7fff0a9421f0 /* 10 vars */) = 0 brk(NULL) = 0x555582e6a000 brk(0x555582e6ae00) = 0x555582e6ae00 arch_prctl(ARCH_SET_FS, 0x555582e6a480) = 0 set_tid_address(0x555582e6a750) = 290 set_robust_list(0x555582e6a760, 24) = 0 rseq(0x555582e6ada0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor162279893", 4096) = 27 getrandom("\x24\x62\x18\x7d\xa9\x2e\xa4\x26", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555582e6ae00 brk(0x555582e8be00) = 0x555582e8be00 brk(0x555582e8c000) = 0x555582e8c000 mprotect(0x7f4e834e9000, 16384, 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=0x7f4e83443bf0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f4e8344afe0}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f4e83443bf0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f4e8344afe0}, NULL, 8) = 0 write(1, "executing program\n", 18executing program ) = 18 mkdirat(AT_FDCWD, "./file0", 000) = 0 mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 openat(-1, ".pending_reads", O_RDONLY) = -1 EBADF (Bad file descriptor) mkdir("./file0", 0777) = -1 EEXIST (File exists) mount(NULL, "./file0", 0x200000000000, MS_REMOUNT, "") = 0 openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 chdir("./file0") = 0 mprotect(0x200000000000, 16384, PROT_READ) = 0 --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x200000000040} --- --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x200000000000} --- [ 26.289119][ T28] audit: type=1400 audit(1753954364.663:64): avc: denied { execmem } for pid=290 comm="syz-executor162" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 26.297687][ T290] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN [ 26.309116][ T28] audit: type=1400 audit(1753954364.663:65): avc: denied { mounton } for pid=290 comm="syz-executor162" path="/root/file0" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 26.320248][ T290] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 26.320266][ T290] CPU: 1 PID: 290 Comm: syz-executor162 Not tainted 6.1.145-syzkaller-00023-g2245c50c5f5f #0 [ 26.320288][ T290] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 26.320299][ T290] RIP: 0010:dir_rename_wrap+0x167/0x6a0 [ 26.343005][ T28] audit: type=1400 audit(1753954364.663:66): avc: denied { mount } for pid=290 comm="syz-executor162" name="/" dev="incremental-fs" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=filesystem permissive=1 [ 26.351364][ T290] Code: 89 e7 e8 6c 12 a1 ff 4d 8b 34 24 eb 08 e8 71 b5 5c ff 45 31 f6 49 83 c6 08 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 f7 e8 3b 12 a1 ff 4d 8b 36 4d 85 f6 0f 84 [ 26.351382][ T290] RSP: 0018:ffffc90000e17a40 EFLAGS: 00010202 [ 26.351410][ T290] RAX: 0000000000000001 RBX: ffff888107d6b860 RCX: dffffc0000000000 [ 26.351424][ T290] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 26.351435][ T290] RBP: ffffc90000e17b70 R08: dffffc0000000000 R09: fffff520001c2f39 [ 26.351449][ T290] R10: fffff520001c2f39 R11: 1ffff920001c2f38 R12: ffff8881147613a8 [ 26.351462][ T290] R13: 1ffff920001c2f54 R14: 0000000000000008 R15: ffff888107d6b800 [ 26.351476][ T290] FS: 0000555582e6a480(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 26.351493][ T290] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.361660][ T28] audit: type=1400 audit(1753954364.673:67): avc: denied { remount } for pid=290 comm="syz-executor162" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=filesystem permissive=1 [ 26.371684][ T290] CR2: 0000200000000000 CR3: 0000000103b3f000 CR4: 00000000003506a0 [ 26.371704][ T290] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.371715][ T290] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.371727][ T290] Call Trace: [ 26.371733][ T290] [ 26.371742][ T290] ? rwsem_write_trylock+0x130/0x300 [ 26.377321][ T28] audit: type=1400 audit(1753954364.673:68): avc: denied { write } for pid=290 comm="syz-executor162" name="/" dev="incremental-fs" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 26.400688][ T290] ? __cfi_dir_rename_wrap+0x10/0x10 [ 26.420328][ T28] audit: type=1400 audit(1753954364.673:69): avc: denied { remove_name } for pid=290 comm="syz-executor162" name=".pending_reads" dev="incremental-fs" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 26.426359][ T290] ? lockref_get+0x123/0x1b0 [ 26.437557][ T28] audit: type=1400 audit(1753954364.673:70): avc: denied { rename } for pid=290 comm="syz-executor162" name=".pending_reads" dev="incremental-fs" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 [ 26.442321][ T290] ? down_write+0xd/0x30 [ 26.450599][ T28] audit: type=1400 audit(1753954364.673:71): avc: denied { add_name } for pid=290 comm="syz-executor162" name="fuse" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 26.458369][ T290] ? try_break_deleg+0x7c/0x130 [ 26.458398][ T290] ? __cfi_dir_rename_wrap+0x10/0x10 [ 26.466623][ T28] audit: type=1400 audit(1753954364.813:72): avc: denied { read } for pid=85 comm="syslogd" name="log" dev="sda1" ino=2010 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:var_t tclass=lnk_file permissive=1 [ 26.475292][ T290] vfs_rename+0xbc4/0x10d0 [ 26.475324][ T290] ? __cfi_vfs_rename+0x10/0x10 [ 26.482043][ T28] audit: type=1400 audit(1753954364.813:73): avc: denied { search } for pid=85 comm="syslogd" name="/" dev="tmpfs" ino=1 scontext=system_u:system_r:syslogd_t tcontext=system_u:object_r:tmpfs_t tclass=dir permissive=1 [ 26.502104][ T290] ? d_alloc+0x199/0x1d0 [ 26.502135][ T290] ? lookup_one_qstr_excl+0x133/0x270 [ 26.502165][ T290] do_renameat2+0x7ed/0xf60 [ 26.719681][ T290] ? __cfi_do_renameat2+0x10/0x10 [ 26.724799][ T290] ? strncpy_from_user+0x17a/0x2d0 [ 26.729910][ T290] ? getname_flags+0x206/0x500 [ 26.734675][ T290] __x64_sys_rename+0x86/0x90 [ 26.739366][ T290] x64_sys_call+0x300/0x9a0 [ 26.743879][ T290] do_syscall_64+0x4c/0xa0 [ 26.748299][ T290] ? clear_bhb_loop+0x30/0x80 [ 26.752974][ T290] ? clear_bhb_loop+0x30/0x80 [ 26.757659][ T290] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 26.763549][ T290] RIP: 0033:0x7f4e83476c49 [ 26.767971][ T290] Code: 48 83 c4 28 c3 e8 67 17 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 26.787660][ T290] RSP: 002b:00007ffdef61fae8 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 [ 26.796069][ T290] RAX: ffffffffffffffda RBX: 0073646165725f67 RCX: 00007f4e83476c49 [ 26.804037][ T290] RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000200000000040 [ 26.812011][ T290] RBP: 00007ffdef61faf8 R08: 00007ffdef61faf8 R09: 00007f4e83443bf0 [ 26.819975][ T290] R10: 00007ffdef61faf0 R11: 0000000000000246 R12: 0000000000000000 [ 26.827941][ T290] R13: 00007ffdef61fd58 R14: 0000000000000001 R15: 0000000000000001 [ 26.835915][ T290] [ 26.838926][ T290] Modules linked in: [ 26.842994][ T290] ---[ end trace 0000000000000000 ]--- [ 26.848662][ T290] RIP: 0010:dir_rename_wrap+0x167/0x6a0 [ 26.854239][ T290] Code: 89 e7 e8 6c 12 a1 ff 4d 8b 34 24 eb 08 e8 71 b5 5c ff 45 31 f6 49 83 c6 08 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 4c 89 f7 e8 3b 12 a1 ff 4d 8b 36 4d 85 f6 0f 84 [ 26.874070][ T290] RSP: 0018:ffffc90000e17a40 EFLAGS: 00010202 [ 26.880169][ T290] RAX: 0000000000000001 RBX: ffff888107d6b860 RCX: dffffc0000000000 [ 26.888194][ T290] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 26.896193][ T290] RBP: ffffc90000e17b70 R08: dffffc0000000000 R09: fffff520001c2f39 [ 26.904173][ T290] R10: fffff520001c2f39 R11: 1ffff920001c2f38 R12: ffff8881147613a8 [ 26.912175][ T290] R13: 1ffff920001c2f54 R14: 0000000000000008 R15: ffff888107d6b800 [ 26.920174][ T290] FS: 0000555582e6a480(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 26.929131][ T290] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.935769][ T290] CR2: 0000200000000000 CR3: 0000000103b3f000 CR4: 00000000003506a0 [ 26.943739][ T290] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.951754][ T290] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.959896][ T290] Kernel panic - not syncing: Fatal exception [ 26.966269][ T290] Kernel Offset: disabled [ 26.970591][ T290] Rebooting in 86400 seconds..