./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4041671042 <...> Warning: Permanently added '10.128.1.37' (ED25519) to the list of known hosts. execve("./syz-executor4041671042", ["./syz-executor4041671042"], 0x7ffdce6d9250 /* 10 vars */) = 0 brk(NULL) = 0x555583d84000 brk(0x555583d84e00) = 0x555583d84e00 arch_prctl(ARCH_SET_FS, 0x555583d84480) = 0 set_tid_address(0x555583d84750) = 289 set_robust_list(0x555583d84760, 24) = 0 rseq(0x555583d84da0, 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-executor4041671042", 4096) = 28 getrandom("\x1b\x94\x7b\x03\xf2\x15\xb9\xba", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555583d84e00 brk(0x555583da5e00) = 0x555583da5e00 brk(0x555583da6000) = 0x555583da6000 mprotect(0x7f5ea1080000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 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=0x7f5ea0fda0c0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f5ea0fe1410}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f5ea0fda0c0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f5ea0fe1410}, NULL, 8) = 0 write(1, "executing program\n", 18executing program ) = 18 mkdirat(AT_FDCWD, "./file0", 000) = 0 openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_SYNC, 025) = 3 mkdir("./file2", 0777) = 0 --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=NULL} --- mount(NULL, "./file0", "overlay", 0, "workdir=./file0,lowerdir=.,upperdir=./file2,metacopy=on,,") = 0 mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 openat(AT_FDCWD, "./file0", O_RDONLY) = 4 linkat(4, "./file1", 4, "./file3", AT_SYMLINK_FOLLOW|AT_EMPTY_PATH) = 0 [ 22.331174][ T24] audit: type=1400 audit(1736293309.479:66): avc: denied { execmem } for pid=289 comm="syz-executor404" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 22.348418][ T289] general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN [ 22.350438][ T24] audit: type=1400 audit(1736293309.489:67): avc: denied { mounton } for pid=289 comm="syz-executor404" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 22.361878][ T289] KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] [ 22.361889][ T289] CPU: 1 PID: 289 Comm: syz-executor404 Not tainted 5.10.232-syzkaller-00746-g49e8ba0a684f #0 [ 22.361894][ T289] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 22.361927][ T289] RIP: 0010:security_inode_getattr+0x47/0x130 [ 22.361944][ T289] Code: 3e ff 49 8d 5f 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 17 70 7c ff 48 8b 1b 48 83 c3 30 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 fa 6f 7c ff 48 8b 1b 48 83 c3 0c [ 22.384386][ T24] audit: type=1400 audit(1736293309.489:68): avc: denied { unlink } for pid=289 comm="syz-executor404" name="#1" dev="sda1" ino=1932 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=chr_file permissive=1 [ 22.392602][ T289] RSP: 0018:ffffc9000092efb0 EFLAGS: 00010206 [ 22.392619][ T289] RAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff88810cbc93c0 [ 22.402688][ T24] audit: type=1400 audit(1736293309.489:69): avc: denied { mount } for pid=289 comm="syz-executor404" name="/" dev="overlay" ino=1929 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [ 22.412574][ T289] RDX: 0000000000000000 RSI: ffffc9000092f420 RDI: ffffc9000092f410 [ 22.412581][ T289] RBP: ffffc9000092efd8 R08: dffffc0000000000 R09: ffffc9000092f410 [ 22.412588][ T289] R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc9000092f420 [ 22.412593][ T289] R13: dffffc0000000000 R14: 0000000000000000 R15: ffffc9000092f410 [ 22.412601][ T289] FS: 0000555583d84480(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 22.412607][ T289] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.412613][ T289] CR2: 0000000000000000 CR3: 000000010eae3000 CR4: 00000000003506a0 [ 22.412625][ T289] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.418507][ T24] audit: type=1400 audit(1736293309.489:70): avc: denied { mount } for pid=289 comm="syz-executor404" name="/" dev="incremental-fs" ino=1929 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=filesystem permissive=1 [ 22.437908][ T289] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.437912][ T289] Call Trace: [ 22.437933][ T289] ? __die_body+0x62/0xb0 [ 22.459974][ T24] audit: type=1400 audit(1736293309.499:71): avc: denied { write } for pid=289 comm="syz-executor404" name="/" dev="incremental-fs" ino=1929 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 22.465865][ T289] ? die_addr+0x9f/0xd0 [ 22.473688][ T24] audit: type=1400 audit(1736293309.499:72): avc: denied { add_name } for pid=289 comm="syz-executor404" name="file1" dev="incremental-fs" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 22.495719][ T289] ? exc_general_protection+0x3ff/0x490 [ 22.495732][ T289] ? asm_exc_general_protection+0x1e/0x30 [ 22.495745][ T289] ? security_inode_getattr+0x47/0x130 [ 22.495752][ T289] vfs_getattr+0x26/0x70 [ 22.495768][ T289] ovl_copy_up_flags+0x5af/0x2700 [ 22.503573][ T24] audit: type=1400 audit(1736293309.499:73): avc: denied { link } for pid=289 comm="syz-executor404" name="file1" dev="incremental-fs" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 [ 22.511343][ T289] ? ovl_maybe_copy_up+0x190/0x190 [ 22.511357][ T289] ? arch_stack_walk+0xf3/0x140 [ 22.519166][ T24] audit: type=1400 audit(1736293309.499:74): avc: denied { read write } for pid=289 comm="syz-executor404" name="file3" dev="incremental-fs" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 [ 22.526961][ T289] ? stack_trace_save+0x113/0x1c0 [ 22.526976][ T289] ? stack_trace_snprint+0xf0/0xf0 [ 22.535737][ T24] audit: type=1400 audit(1736293309.499:75): avc: denied { open } for pid=289 comm="syz-executor404" path="/root/file0/file3" dev="incremental-fs" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 [ 22.542150][ T289] ? stack_trace_save+0x113/0x1c0 [ 22.542160][ T289] ? stack_trace_snprint+0xf0/0xf0 [ 22.542170][ T289] ? __kasan_slab_alloc+0xc3/0xe0 [ 22.542186][ T289] ? avc_has_perm+0x14d/0x400 [ 22.780407][ T289] ? mnt_want_write+0x1ba/0x290 [ 22.785082][ T289] ovl_maybe_copy_up+0x15a/0x190 [ 22.789853][ T289] ovl_open+0xad/0x210 [ 22.793758][ T289] ? ovl_mmap+0x4f0/0x4f0 [ 22.797927][ T289] do_dentry_open+0x7c1/0x10d0 [ 22.802526][ T289] dentry_open+0xb8/0x100 [ 22.806690][ T289] file_open+0x2a7/0x650 [ 22.810771][ T289] ? incfs_file_mmap+0x120/0x120 [ 22.815544][ T289] ? fsnotify_perm+0x324/0x4e0 [ 22.820145][ T289] ? incfs_file_mmap+0x120/0x120 [ 22.824918][ T289] do_dentry_open+0x7c1/0x10d0 [ 22.829519][ T289] vfs_open+0x73/0x80 [ 22.833337][ T289] path_openat+0x2660/0x3000 [ 22.837767][ T289] ? kmem_cache_alloc+0x168/0x2e0 [ 22.842624][ T289] ? do_syscall_64+0x34/0x70 [ 22.847051][ T289] ? entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 22.852953][ T289] ? do_filp_open+0x460/0x460 [ 22.857467][ T289] do_filp_open+0x21c/0x460 [ 22.861806][ T289] ? vfs_tmpfile+0x2b0/0x2b0 [ 22.866233][ T289] ? get_unused_fd_flags+0x94/0xa0 [ 22.871178][ T289] do_sys_openat2+0x13f/0x710 [ 22.875694][ T289] ? ptrace_stop+0x6dc/0xa30 [ 22.880120][ T289] ? do_sys_open+0x220/0x220 [ 22.884546][ T289] ? _raw_spin_unlock_irq+0x4e/0x70 [ 22.889579][ T289] ? ptrace_notify+0x24c/0x350 [ 22.894180][ T289] __x64_sys_openat+0x243/0x290 [ 22.898867][ T289] ? __ia32_sys_open+0x270/0x270 [ 22.903644][ T289] ? syscall_enter_from_user_mode+0x57/0x1a0 [ 22.909453][ T289] do_syscall_64+0x34/0x70 [ 22.913708][ T289] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 22.919439][ T289] RIP: 0033:0x7f5ea100d059 [ 22.923688][ 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 [ 22.943129][ T289] RSP: 002b:00007fffce0d92a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 22.951372][ T289] RAX: ffffffffffffffda RBX: 00007fffce0d92b0 RCX: 00007f5ea100d059 [ 22.959187][ T289] RDX: 0000000000000002 RSI: 0000000020000080 RDI: 0000000000000004 [ 22.966995][ T289] RBP: 00007fffce0d92b8 R08: 00007f5ea0fda0c0 R09: 00007f5ea0fda0c0 [ 22.974903][ T289] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 22.982715][ T289] R13: 00007fffce0d9518 R14: 0000000000000001 R15: 0000000000000001 [ 22.990526][ T289] Modules linked in: [ 22.994540][ T289] ---[ end trace 8b9c8bd1de7b5fa2 ]--- [ 22.999898][ T289] RIP: 0010:security_inode_getattr+0x47/0x130 [ 23.005697][ T289] Code: 3e ff 49 8d 5f 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 17 70 7c ff 48 8b 1b 48 83 c3 30 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 fa 6f 7c ff 48 8b 1b 48 83 c3 0c [ 23.025308][ T289] RSP: 0018:ffffc9000092efb0 EFLAGS: 00010206 [ 23.031340][ T289] RAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff88810cbc93c0 [ 23.039128][ T289] RDX: 0000000000000000 RSI: ffffc9000092f420 RDI: ffffc9000092f410 [ 23.046929][ T289] RBP: ffffc9000092efd8 R08: dffffc0000000000 R09: ffffc9000092f410 [ 23.054726][ T289] R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc9000092f420 [ 23.062557][ T289] R13: dffffc0000000000 R14: 0000000000000000 R15: ffffc9000092f410 [ 23.070367][ T289] FS: 0000555583d84480(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 23.079133][ T289] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.085536][ T289] CR2: 0000000000000000 CR3: 000000010eae3000 CR4: 00000000003506a0 [ 23.093375][ T289] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.101174][ T289] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.108993][ T289] Kernel panic - not syncing: Fatal exception [ 23.115076][ T289] Kernel Offset: disabled [ 23.119195][ T289] Rebooting in 86400 seconds..