./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1844670842 <...> Warning: Permanently added '10.128.1.113' (ED25519) to the list of known hosts. execve("./syz-executor1844670842", ["./syz-executor1844670842"], 0x7ffe01976410 /* 10 vars */) = 0 brk(NULL) = 0x555594765000 brk(0x555594765e00) = 0x555594765e00 arch_prctl(ARCH_SET_FS, 0x555594765480) = 0 set_tid_address(0x555594765750) = 289 set_robust_list(0x555594765760, 24) = 0 rseq(0x555594765da0, 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-executor1844670842", 4096) = 28 getrandom("\x8c\x6d\x94\xa5\xb4\xaf\x2a\x98", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555594765e00 brk(0x555594786e00) = 0x555594786e00 brk(0x555594787000) = 0x555594787000 mprotect(0x7f458f5f5000, 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, 0executing program ) = 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=0x7f458f54fbf0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f458f556fe0}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f458f54fbf0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f458f556fe0}, NULL, 8) = 0 write(1, "executing program\n", 18) = 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} --- [ 23.346929][ T28] audit: type=1400 audit(1753956128.334:64): avc: denied { execmem } for pid=289 comm="syz-executor184" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 23.351624][ T289] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN [ 23.367088][ T28] audit: type=1400 audit(1753956128.334:65): avc: denied { mounton } for pid=289 comm="syz-executor184" path="/root/file0" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 23.378045][ T289] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 23.378062][ T289] CPU: 0 PID: 289 Comm: syz-executor184 Not tainted 6.1.145-syzkaller-00023-g2245c50c5f5f #0 [ 23.378083][ T289] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 23.378094][ T289] RIP: 0010:dir_rename_wrap+0x167/0x6a0 [ 23.401310][ T28] audit: type=1400 audit(1753956128.334:66): avc: denied { mount } for pid=289 comm="syz-executor184" name="/" dev="incremental-fs" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=filesystem permissive=1 [ 23.409706][ T289] 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 [ 23.409726][ T289] RSP: 0018:ffffc90000e77a40 EFLAGS: 00010202 [ 23.409757][ T289] RAX: 0000000000000001 RBX: ffff88810de4e060 RCX: dffffc0000000000 [ 23.420169][ T28] audit: type=1400 audit(1753956128.334:67): avc: denied { remount } for pid=289 comm="syz-executor184" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=filesystem permissive=1 [ 23.430041][ T289] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 23.430055][ T289] RBP: ffffc90000e77b70 R08: dffffc0000000000 R09: fffff520001cef39 [ 23.430070][ T289] R10: fffff520001cef39 R11: 1ffff920001cef38 R12: ffff8881162d7d38 [ 23.436199][ T28] audit: type=1400 audit(1753956128.334:68): avc: denied { write } for pid=289 comm="syz-executor184" name="/" dev="incremental-fs" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 23.459496][ T289] R13: 1ffff920001cef54 R14: 0000000000000008 R15: ffff88810de4e000 [ 23.459514][ T289] FS: 0000555594765480(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 23.459533][ T289] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.459546][ T289] CR2: 0000200000000000 CR3: 0000000121eb9000 CR4: 00000000003506b0 [ 23.479274][ T28] audit: type=1400 audit(1753956128.334:69): avc: denied { remove_name } for pid=289 comm="syz-executor184" 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 [ 23.485303][ T289] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.493301][ T28] audit: type=1400 audit(1753956128.334:70): avc: denied { rename } for pid=289 comm="syz-executor184" 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 [ 23.513507][ T289] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.513523][ T289] Call Trace: [ 23.513529][ T289] [ 23.513538][ T289] ? rwsem_write_trylock+0x130/0x300 [ 23.523652][ T28] audit: type=1400 audit(1753956128.334:71): avc: denied { add_name } for pid=289 comm="syz-executor184" name="fuse" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 23.529508][ T289] ? __cfi_dir_rename_wrap+0x10/0x10 [ 23.529536][ T289] ? lockref_get+0x123/0x1b0 [ 23.537721][ T28] audit: type=1400 audit(1753956128.524:72): avc: denied { read } for pid=84 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 [ 23.560362][ T289] ? down_write+0xd/0x30 [ 23.560392][ T289] ? try_break_deleg+0x7c/0x130 [ 23.560413][ T289] ? __cfi_dir_rename_wrap+0x10/0x10 [ 23.568901][ T28] audit: type=1400 audit(1753956128.524:73): avc: denied { search } for pid=84 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 [ 23.577305][ T289] vfs_rename+0xbc4/0x10d0 [ 23.759709][ T289] ? __cfi_vfs_rename+0x10/0x10 [ 23.764574][ T289] ? d_alloc+0x199/0x1d0 [ 23.768831][ T289] ? lookup_one_qstr_excl+0x133/0x270 [ 23.774215][ T289] do_renameat2+0x7ed/0xf60 [ 23.778730][ T289] ? __cfi_do_renameat2+0x10/0x10 [ 23.783757][ T289] ? strncpy_from_user+0x17a/0x2d0 [ 23.788890][ T289] ? getname_flags+0x206/0x500 [ 23.793667][ T289] __x64_sys_rename+0x86/0x90 [ 23.798361][ T289] x64_sys_call+0x300/0x9a0 [ 23.802875][ T289] do_syscall_64+0x4c/0xa0 [ 23.807299][ T289] ? clear_bhb_loop+0x30/0x80 [ 23.811981][ T289] ? clear_bhb_loop+0x30/0x80 [ 23.816666][ T289] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 23.822568][ T289] RIP: 0033:0x7f458f582c49 [ 23.826994][ T289] 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 [ 23.846702][ T289] RSP: 002b:00007ffdc8243c48 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 [ 23.855143][ T289] RAX: ffffffffffffffda RBX: 0073646165725f67 RCX: 00007f458f582c49 [ 23.863136][ T289] RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000200000000040 [ 23.871261][ T289] RBP: 00007ffdc8243c58 R08: 00007ffdc8243c58 R09: 00007f458f54fbf0 [ 23.879242][ T289] R10: 00007ffdc8243c50 R11: 0000000000000246 R12: 0000000000000000 [ 23.887223][ T289] R13: 00007ffdc8243eb8 R14: 0000000000000001 R15: 0000000000000001 [ 23.895213][ T289] [ 23.898245][ T289] Modules linked in: [ 23.902978][ T289] ---[ end trace 0000000000000000 ]--- [ 23.908453][ T289] RIP: 0010:dir_rename_wrap+0x167/0x6a0 [ 23.914060][ T289] 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 [ 23.933730][ T289] RSP: 0018:ffffc90000e77a40 EFLAGS: 00010202 [ 23.939965][ T289] RAX: 0000000000000001 RBX: ffff88810de4e060 RCX: dffffc0000000000 [ 23.948042][ T289] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 23.956045][ T289] RBP: ffffc90000e77b70 R08: dffffc0000000000 R09: fffff520001cef39 [ 23.964128][ T289] R10: fffff520001cef39 R11: 1ffff920001cef38 R12: ffff8881162d7d38 [ 23.972152][ T289] R13: 1ffff920001cef54 R14: 0000000000000008 R15: ffff88810de4e000 [ 23.980184][ T289] FS: 0000555594765480(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 23.989156][ T289] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.995755][ T289] CR2: 0000200000000000 CR3: 0000000121eb9000 CR4: 00000000003506b0 [ 24.003858][ T289] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.011870][ T289] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.019881][ T289] Kernel panic - not syncing: Fatal exception [ 24.026193][ T289] Kernel Offset: disabled [ 24.030527][ T289] Rebooting in 86400 seconds..