./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2466310812 <...> Warning: Permanently added '10.128.0.95' (ED25519) to the list of known hosts. execve("./syz-executor2466310812", ["./syz-executor2466310812"], 0x7ffd669385f0 /* 10 vars */) = 0 brk(NULL) = 0x555556ef9000 brk(0x555556ef9e00) = 0x555556ef9e00 arch_prctl(ARCH_SET_FS, 0x555556ef9480) = 0 set_tid_address(0x555556ef9750) = 293 set_robust_list(0x555556ef9760, 24) = 0 rseq(0x555556ef9da0, 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-executor2466310812", 4096) = 28 getrandom("\x7c\x71\x56\xa2\xb9\x6a\x4b\x20", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556ef9e00 brk(0x555556f1ae00) = 0x555556f1ae00 brk(0x555556f1b000) = 0x555556f1b000 mprotect(0x7f8853ae8000, 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=0x7f8853a420a0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f8853a493f0}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f8853a420a0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f8853a493f0}, NULL, 8) = 0 mkdir("./file0", 000) = 0 openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT, 000) = 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", 0) = 0 [ 22.686383][ T30] audit: type=1400 audit(1711542040.326:66): avc: denied { execmem } for pid=293 comm="syz-executor246" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 22.693700][ T293] general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN [ 22.705999][ T30] audit: type=1400 audit(1711542040.326:67): avc: denied { mounton } for pid=293 comm="syz-executor246" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 22.717186][ T293] KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] [ 22.717200][ T293] CPU: 0 PID: 293 Comm: syz-executor246 Not tainted 5.15.148-syzkaller-00718-g993bed180178 #0 [ 22.717216][ T293] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 [ 22.717224][ T293] RIP: 0010:security_inode_getattr+0x47/0x130 [ 22.740341][ T30] audit: type=1400 audit(1711542040.326:68): avc: denied { unlink } for pid=293 comm="syz-executor246" name="#1" dev="sda1" ino=1932 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=chr_file permissive=1 [ 22.748092][ T293] Code: 38 ff 49 8d 5f 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 37 04 7b 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 1a 04 7b ff 48 8b 1b 48 83 c3 0c [ 22.748107][ T293] RSP: 0018:ffffc9000079eeb0 EFLAGS: 00010206 [ 22.748122][ T293] RAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff8881195abb40 [ 22.758469][ T30] audit: type=1400 audit(1711542040.326:69): avc: denied { mount } for pid=293 comm="syz-executor246" name="/" dev="overlay" ino=1929 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [ 22.768053][ T293] RDX: 0000000000000000 RSI: ffffc9000079f3e0 RDI: ffffc9000079f3d0 [ 22.768067][ T293] RBP: ffffc9000079eed8 R08: dffffc0000000000 R09: ffffc9000079f3d0 [ 22.768078][ T293] R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc9000079f3e0 [ 22.768088][ T293] R13: dffffc0000000000 R14: ffffc9000079f3d0 R15: ffffc9000079f3d0 [ 22.768100][ T293] FS: 0000555556ef9480(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 22.774307][ T30] audit: type=1400 audit(1711542040.326:70): avc: denied { mount } for pid=293 comm="syz-executor246" name="/" dev="incremental-fs" ino=1929 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=filesystem permissive=1 [ 22.796173][ T293] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.796191][ T293] CR2: 0000000000000000 CR3: 000000011ee5e000 CR4: 00000000003506b0 [ 22.796205][ T293] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.796213][ T293] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.816125][ T30] audit: type=1400 audit(1711542040.326:71): avc: denied { write } for pid=293 comm="syz-executor246" name="/" dev="incremental-fs" ino=1929 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 22.821516][ T293] Call Trace: [ 22.821522][ T293] [ 22.821528][ T293] ? __die_body+0x62/0xb0 [ 22.829618][ T30] audit: type=1400 audit(1711542040.326:72): avc: denied { add_name } for pid=293 comm="syz-executor246" name="file1" dev="incremental-fs" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 22.851635][ T293] ? die_addr+0x9f/0xd0 [ 22.851657][ T293] ? exc_general_protection+0x311/0x4b0 [ 22.851678][ T293] ? asm_exc_general_protection+0x27/0x30 [ 22.859712][ T30] audit: type=1400 audit(1711542040.326:73): avc: denied { link } for pid=293 comm="syz-executor246" name="file1" dev="incremental-fs" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 [ 22.867258][ T293] ? security_inode_getattr+0x47/0x130 [ 22.875287][ T30] audit: type=1400 audit(1711542040.326:74): avc: denied { read write } for pid=293 comm="syz-executor246" name="file3" dev="incremental-fs" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 [ 22.882876][ T293] vfs_getattr+0x2a/0x320 [ 22.882898][ T293] ovl_copy_up_flags+0x629/0x2d30 [ 22.882914][ T293] ? kasan_set_free_info+0x23/0x40 [ 22.891934][ T30] audit: type=1400 audit(1711542040.326:75): avc: denied { open } for pid=293 comm="syz-executor246" 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 [ 22.915268][ T293] ? ovl_maybe_copy_up+0x190/0x190 [ 22.915296][ T293] ? stack_trace_save+0x1c0/0x1c0 [ 22.915312][ T293] ? __kernel_text_address+0x9b/0x110 [ 22.915328][ T293] ? unwind_get_return_address+0x4d/0x90 [ 22.915344][ T293] ? arch_stack_walk+0xf3/0x140 [ 23.131385][ T293] ? stack_trace_save+0x113/0x1c0 [ 23.136238][ T293] ? avc_has_perm_noaudit+0x348/0x430 [ 23.141492][ T293] ? memcpy+0x56/0x70 [ 23.145265][ T293] ? avc_has_perm_noaudit+0x2dd/0x430 [ 23.150480][ T293] ? __stack_depot_save+0x34/0x470 [ 23.155420][ T293] ? avc_denied+0x1b0/0x1b0 [ 23.159768][ T293] ? alloc_empty_file+0x95/0x180 [ 23.164547][ T293] ? mnt_want_write+0x1ff/0x2d0 [ 23.169227][ T293] ovl_maybe_copy_up+0x15a/0x190 [ 23.173993][ T293] ovl_open+0xad/0x210 [ 23.177897][ T293] ? ovl_mmap+0x450/0x450 [ 23.182065][ T293] do_dentry_open+0x81c/0xfd0 [ 23.186578][ T293] dentry_open+0xb8/0x100 [ 23.190753][ T293] file_open+0x2a7/0x650 [ 23.194831][ T293] ? incfs_file_mmap+0x120/0x120 [ 23.199599][ T293] ? fsnotify_perm+0x470/0x5d0 [ 23.204198][ T293] ? incfs_file_mmap+0x120/0x120 [ 23.208981][ T293] do_dentry_open+0x81c/0xfd0 [ 23.213487][ T293] vfs_open+0x73/0x80 [ 23.217334][ T293] path_openat+0x26f0/0x2f40 [ 23.221738][ T293] ? __kasan_slab_alloc+0xb1/0xe0 [ 23.226770][ T293] ? kmem_cache_alloc+0xf5/0x200 [ 23.231541][ T293] ? getname_flags+0xba/0x520 [ 23.236071][ T293] ? __x64_sys_openat+0x243/0x290 [ 23.240911][ T293] ? do_filp_open+0x460/0x460 [ 23.245518][ T293] do_filp_open+0x21c/0x460 [ 23.249972][ T293] ? vfs_tmpfile+0x2c0/0x2c0 [ 23.255464][ T293] do_sys_openat2+0x13f/0x830 [ 23.259969][ T293] ? cgroup_leave_frozen+0x164/0x2c0 [ 23.265088][ T293] ? do_sys_open+0x220/0x220 [ 23.269521][ T293] ? ptrace_notify+0x24c/0x350 [ 23.274114][ T293] __x64_sys_openat+0x243/0x290 [ 23.278799][ T293] ? __ia32_sys_open+0x270/0x270 [ 23.283573][ T293] ? __kasan_check_read+0x11/0x20 [ 23.288605][ T293] ? syscall_enter_from_user_mode+0x70/0x1b0 [ 23.294431][ T293] do_syscall_64+0x3d/0xb0 [ 23.298673][ T293] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 23.304425][ T293] RIP: 0033:0x7f8853a75019 [ 23.308657][ T293] 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 [ 23.328098][ T293] RSP: 002b:00007fff58abf188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 23.336435][ T293] RAX: ffffffffffffffda RBX: 00007fff58abf190 RCX: 00007f8853a75019 [ 23.344240][ T293] RDX: 0000000000000002 RSI: 0000000020000080 RDI: 0000000000000004 [ 23.352053][ T293] RBP: 00007fff58abf198 R08: 00007f8853a420a0 R09: 00007f8853a420a0 [ 23.359860][ T293] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 23.367672][ T293] R13: 00007fff58abf3f8 R14: 0000000000000001 R15: 0000000000000001 [ 23.375486][ T293] [ 23.378355][ T293] Modules linked in: [ 23.382506][ T293] ---[ end trace 63ce3a5a71cfa2a5 ]--- [ 23.387868][ T293] RIP: 0010:security_inode_getattr+0x47/0x130 [ 23.393809][ T293] Code: 38 ff 49 8d 5f 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 37 04 7b 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 1a 04 7b ff 48 8b 1b 48 83 c3 0c [ 23.413333][ T293] RSP: 0018:ffffc9000079eeb0 EFLAGS: 00010206 [ 23.419220][ T293] RAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff8881195abb40 [ 23.427018][ T293] RDX: 0000000000000000 RSI: ffffc9000079f3e0 RDI: ffffc9000079f3d0 [ 23.434852][ T293] RBP: ffffc9000079eed8 R08: dffffc0000000000 R09: ffffc9000079f3d0 [ 23.442651][ T293] R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc9000079f3e0 [ 23.450563][ T293] R13: dffffc0000000000 R14: ffffc9000079f3d0 R15: ffffc9000079f3d0 [ 23.458378][ T293] FS: 0000555556ef9480(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 23.467119][ T293] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.473701][ T293] CR2: 0000000000000000 CR3: 000000011ee5e000 CR4: 00000000003506b0 [ 23.481453][ T293] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.489268][ T293] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.497060][ T293] Kernel panic - not syncing: Fatal exception [ 23.503344][ T293] Kernel Offset: disabled [ 23.507579][ T293] Rebooting in 86400 seconds..