./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1392004581 <...> Warning: Permanently added '10.128.0.167' (ED25519) to the list of known hosts. execve("./syz-executor1392004581", ["./syz-executor1392004581"], 0x7ffe725b0970 /* 10 vars */) = 0 brk(NULL) = 0x5555643c4000 brk(0x5555643c4e00) = 0x5555643c4e00 arch_prctl(ARCH_SET_FS, 0x5555643c4480) = 0 set_tid_address(0x5555643c4750) = 289 set_robust_list(0x5555643c4760, 24) = 0 rseq(0x5555643c4da0, 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-executor1392004581", 4096) = 28 getrandom("\x6e\x54\xe8\x5e\x15\xd0\xba\x8b", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555643c4e00 brk(0x5555643e5e00) = 0x5555643e5e00 brk(0x5555643e6000) = 0x5555643e6000 mprotect(0x7f445060a000, 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=0x7f4450564be0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f445056bf60}, NULL, 8) = 0 executing program rt_sigaction(SIGBUS, {sa_handler=0x7f4450564be0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f445056bf60}, 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} --- [ 24.556491][ T24] audit: type=1400 audit(1744334277.070:66): avc: denied { execmem } for pid=289 comm="syz-executor139" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 24.562472][ T289] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN [ 24.576545][ T24] audit: type=1400 audit(1744334277.070:67): avc: denied { mounton } for pid=289 comm="syz-executor139" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 24.587205][ T289] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] [ 24.587218][ T289] CPU: 1 PID: 289 Comm: syz-executor139 Not tainted 5.10.234-syzkaller-00157-ge0b88ee5f09c #0 [ 24.587224][ T289] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 24.587260][ T289] RIP: 0010:dir_rename_wrap+0xf7/0x570 [ 24.587281][ T289] Code: 4c 89 e7 e8 1b 1d 9d ff 49 8b 1c 24 eb 07 e8 a0 7d 5f ff 31 db 48 83 c3 08 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 eb 1c 9d ff 48 8b 1b 48 85 db 0f 84 [ 24.610137][ T24] audit: type=1400 audit(1744334277.070:68): avc: denied { mount } for pid=289 comm="syz-executor139" name="/" dev="incremental-fs" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=filesystem permissive=1 [ 24.617929][ T289] RSP: 0018:ffffc90000b37b20 EFLAGS: 00010202 [ 24.617942][ T289] RAX: 0000000000000001 RBX: 0000000000000008 RCX: dffffc0000000000 [ 24.617949][ T289] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 24.617957][ T289] RBP: ffffc90000b37b90 R08: ffffffff820b418a R09: fffff52000166f55 [ 24.617965][ T289] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881092f2188 [ 24.617981][ T289] R13: ffff888121014dd0 R14: ffff88810cbaa860 R15: ffff88810cbaa800 [ 24.628298][ T24] audit: type=1400 audit(1744334277.070:69): avc: denied { remount } for pid=289 comm="syz-executor139" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=filesystem permissive=1 [ 24.637980][ T289] FS: 00005555643c4480(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 24.637989][ T289] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.637997][ T289] CR2: 0000200000000000 CR3: 000000010b6bf000 CR4: 00000000003506a0 [ 24.638007][ T289] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.638014][ T289] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.638018][ T289] Call Trace: [ 24.638042][ T289] ? __die_body+0x62/0xb0 [ 24.643329][ T24] audit: type=1400 audit(1744334277.070:70): avc: denied { write } for pid=289 comm="syz-executor139" name="/" dev="incremental-fs" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 24.643355][ T24] audit: type=1400 audit(1744334277.070:71): avc: denied { remove_name } for pid=289 comm="syz-executor139" 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 [ 24.662724][ T289] ? die_addr+0x9f/0xd0 [ 24.662739][ T289] ? exc_general_protection+0x3ff/0x490 [ 24.662760][ T289] ? asm_exc_general_protection+0x1e/0x30 [ 24.686105][ T24] audit: type=1400 audit(1744334277.070:72): avc: denied { rename } for pid=289 comm="syz-executor139" 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 [ 24.691967][ T289] ? dir_rename_wrap+0x9a/0x570 [ 24.691985][ T289] ? dir_rename_wrap+0xf7/0x570 [ 24.699799][ T24] audit: type=1400 audit(1744334277.070:73): avc: denied { add_name } for pid=289 comm="syz-executor139" name="fuse" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 24.707596][ T289] ? try_break_deleg+0x7c/0x120 [ 24.707608][ T289] vfs_rename+0x9fb/0xeb0 [ 24.707621][ T289] ? __ia32_sys_link+0x70/0x70 [ 24.707633][ T289] ? __lookup_hash+0x151/0x290 [ 24.707644][ T289] do_renameat2+0xa56/0x1240 [ 24.707665][ T289] ? fsnotify_move+0x290/0x290 [ 24.939997][ T289] ? getname_flags+0x1fd/0x520 [ 24.944576][ T289] __x64_sys_rename+0x86/0x90 [ 24.949176][ T289] do_syscall_64+0x34/0x70 [ 24.953427][ T289] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 24.959154][ T289] RIP: 0033:0x7f4450597bc9 [ 24.963425][ 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 [ 24.982850][ T289] RSP: 002b:00007ffe54f6f628 EFLAGS: 00000246 ORIG_RAX: 0000000000000052 [ 24.991093][ T289] RAX: ffffffffffffffda RBX: 0073646165725f67 RCX: 00007f4450597bc9 [ 24.998904][ T289] RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000200000000040 [ 25.006713][ T289] RBP: 00007ffe54f6f638 R08: 00007ffe54f6f638 R09: 00007f4450564be0 [ 25.014525][ T289] R10: 00007ffe54f6f630 R11: 0000000000000246 R12: 0000000000000000 [ 25.022347][ T289] R13: 00007ffe54f6f898 R14: 0000000000000001 R15: 0000000000000001 [ 25.030493][ T289] Modules linked in: [ 25.035244][ T289] ---[ end trace 9cc876450f3053d0 ]--- [ 25.041183][ T289] RIP: 0010:dir_rename_wrap+0xf7/0x570 [ 25.047470][ T289] Code: 4c 89 e7 e8 1b 1d 9d ff 49 8b 1c 24 eb 07 e8 a0 7d 5f ff 31 db 48 83 c3 08 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 eb 1c 9d ff 48 8b 1b 48 85 db 0f 84 [ 25.066842][ T289] RSP: 0018:ffffc90000b37b20 EFLAGS: 00010202 [ 25.072749][ T289] RAX: 0000000000000001 RBX: 0000000000000008 RCX: dffffc0000000000 [ 25.080569][ T289] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 25.088372][ T289] RBP: ffffc90000b37b90 R08: ffffffff820b418a R09: fffff52000166f55 [ 25.096698][ T289] R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881092f2188 [ 25.104545][ T289] R13: ffff888121014dd0 R14: ffff88810cbaa860 R15: ffff88810cbaa800 [ 25.112339][ T289] FS: 00005555643c4480(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 25.121131][ T289] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.127540][ T289] CR2: 000055b844b06008 CR3: 000000010b6bf000 CR4: 00000000003506b0 [ 25.135415][ T289] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.143287][ T289] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.151079][ T289] Kernel panic - not syncing: Fatal exception [ 25.157171][ T289] Kernel Offset: disabled [ 25.161319][ T289] Rebooting in 86400 seconds..