./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2900025469 <...> Warning: Permanently added '10.128.0.241' (ED25519) to the list of known hosts. execve("./syz-executor2900025469", ["./syz-executor2900025469"], 0x7ffc68a1ef40 /* 10 vars */) = 0 brk(NULL) = 0x555556717000 brk(0x555556717e00) = 0x555556717e00 arch_prctl(ARCH_SET_FS, 0x555556717480) = 0 set_tid_address(0x555556717750) = 286 set_robust_list(0x555556717760, 24) = 0 rseq(0x555556717da0, 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-executor2900025469", 4096) = 28 getrandom("\x61\x2f\xb4\x9c\xc7\xd3\x73\x3d", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556717e00 brk(0x555556738e00) = 0x555556738e00 brk(0x555556739000) = 0x555556739000 mprotect(0x7f336806d000, 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=0x7f3367fc70a0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f3367fce3f0}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f3367fc70a0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f3367fce3f0}, 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 [ 21.216630][ T24] audit: type=1400 audit(1711475721.810:66): avc: denied { execmem } for pid=286 comm="syz-executor290" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 21.220645][ T24] audit: type=1400 audit(1711475721.810:67): avc: denied { mounton } for pid=286 comm="syz-executor290" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 21.222561][ T286] general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN [ 21.225827][ T24] audit: type=1400 audit(1711475721.810:68): avc: denied { unlink } for pid=286 comm="syz-executor290" name="#1" dev="sda1" ino=1932 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=chr_file permissive=1 [ 21.227501][ T286] KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] [ 21.227512][ T286] CPU: 0 PID: 286 Comm: syz-executor290 Not tainted 5.10.209-syzkaller-00001-ge7daca75b4c3 #0 [ 21.227517][ T286] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/29/2024 [ 21.227546][ T286] RIP: 0010:security_inode_getattr+0x47/0x130 [ 21.227556][ T286] Code: 3f ff 49 8d 5f 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 87 d6 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 6a d6 7c ff 48 8b 1b 48 83 c3 0c [ 21.227562][ T286] RSP: 0018:ffffc90000bc6f90 EFLAGS: 00010206 [ 21.227572][ T286] RAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff88811ee8bb40 [ 21.227578][ T286] RDX: 0000000000000000 RSI: ffffc90000bc7400 RDI: ffffc90000bc73f0 [ 21.227600][ T286] RBP: ffffc90000bc6fb8 R08: dffffc0000000000 R09: ffffc90000bc73f0 [ 21.231632][ T24] audit: type=1400 audit(1711475721.810:69): avc: denied { mount } for pid=286 comm="syz-executor290" name="/" dev="overlay" ino=1929 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [ 21.232850][ T286] R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90000bc7400 [ 21.234476][ T24] audit: type=1400 audit(1711475721.810:70): avc: denied { mount } for pid=286 comm="syz-executor290" name="/" dev="incremental-fs" ino=1929 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=filesystem permissive=1 [ 21.235982][ T286] R13: dffffc0000000000 R14: 0000000000000000 R15: ffffc90000bc73f0 [ 21.235989][ T286] FS: 0000555556717480(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 21.235995][ T286] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.236000][ T286] CR2: 0000000000000000 CR3: 000000011932e000 CR4: 00000000003506b0 [ 21.236008][ T286] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.236013][ T286] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.236016][ T286] Call Trace: [ 21.236029][ T286] ? __die_body+0x62/0xb0 [ 21.236043][ T286] ? die_addr+0x9f/0xd0 [ 21.240054][ T24] audit: type=1400 audit(1711475721.810:71): avc: denied { write } for pid=286 comm="syz-executor290" name="/" dev="incremental-fs" ino=1929 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 21.259190][ T286] ? exc_general_protection+0x3ff/0x490 [ 21.259204][ T286] ? asm_exc_general_protection+0x1e/0x30 [ 21.259216][ T286] ? security_inode_getattr+0x47/0x130 [ 21.259225][ T286] vfs_getattr+0x26/0x70 [ 21.259241][ T286] ovl_copy_up_flags+0x5af/0x2700 [ 21.265127][ T24] audit: type=1400 audit(1711475721.810:72): avc: denied { add_name } for pid=286 comm="syz-executor290" name="file1" dev="incremental-fs" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 21.272906][ T286] ? ovl_maybe_copy_up+0x190/0x190 [ 21.272915][ T286] ? arch_stack_walk+0xf3/0x140 [ 21.272932][ T286] ? stack_trace_save+0x113/0x1c0 [ 21.280795][ T24] audit: type=1400 audit(1711475721.810:73): avc: denied { link } for pid=286 comm="syz-executor290" name="file1" dev="incremental-fs" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 [ 21.288873][ T286] ? stack_trace_snprint+0xf0/0xf0 [ 21.288881][ T286] ? stack_trace_save+0x113/0x1c0 [ 21.288888][ T286] ? stack_trace_snprint+0xf0/0xf0 [ 21.288905][ T286] ? __kasan_slab_alloc+0xc3/0xe0 [ 21.311863][ T24] audit: type=1400 audit(1711475721.810:74): avc: denied { read write } for pid=286 comm="syz-executor290" name="file3" dev="incremental-fs" ino=1928 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=file permissive=1 [ 21.319947][ T286] ? avc_has_perm+0x14d/0x400 [ 21.319972][ T286] ? mnt_want_write+0x1ba/0x290 [ 21.343933][ T24] audit: type=1400 audit(1711475721.810:75): avc: denied { open } for pid=286 comm="syz-executor290" 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 [ 21.351646][ T286] ovl_maybe_copy_up+0x15a/0x190 [ 21.351660][ T286] ovl_open+0xad/0x210 [ 21.351676][ T286] ? ovl_mmap+0x4f0/0x4f0 [ 21.600960][ T286] do_dentry_open+0x7c1/0x10d0 [ 21.606502][ T286] dentry_open+0xb8/0x100 [ 21.610663][ T286] file_open+0x2a7/0x650 [ 21.614756][ T286] ? incfs_file_mmap+0x120/0x120 [ 21.619561][ T286] ? fsnotify_perm+0x3d3/0x4e0 [ 21.624139][ T286] ? incfs_file_mmap+0x120/0x120 [ 21.628909][ T286] do_dentry_open+0x7c1/0x10d0 [ 21.633501][ T286] vfs_open+0x73/0x80 [ 21.637432][ T286] path_openat+0x2660/0x3000 [ 21.641837][ T286] ? update_load_avg+0x541/0x1690 [ 21.646699][ T286] ? kmem_cache_alloc+0x168/0x2e0 [ 21.651684][ T286] ? do_syscall_64+0x34/0x70 [ 21.656086][ T286] ? entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 21.662307][ T286] ? do_filp_open+0x460/0x460 [ 21.666792][ T286] do_filp_open+0x21c/0x460 [ 21.671147][ T286] ? vfs_tmpfile+0x2b0/0x2b0 [ 21.675569][ T286] ? get_unused_fd_flags+0x94/0xa0 [ 21.680500][ T286] do_sys_openat2+0x13f/0x6f0 [ 21.685380][ T286] ? cgroup_leave_frozen+0x164/0x2c0 [ 21.690583][ T286] ? ptrace_stop+0x6dc/0xa30 [ 21.695182][ T286] ? do_sys_open+0x220/0x220 [ 21.699600][ T286] ? _raw_spin_unlock_irq+0x4e/0x70 [ 21.704721][ T286] ? ptrace_notify+0x24c/0x350 [ 21.709410][ T286] __x64_sys_openat+0x243/0x290 [ 21.714099][ T286] ? __ia32_sys_open+0x270/0x270 [ 21.718868][ T286] ? syscall_enter_from_user_mode+0x57/0x1a0 [ 21.724695][ T286] do_syscall_64+0x34/0x70 [ 21.728951][ T286] entry_SYSCALL_64_after_hwframe+0x61/0xc6 [ 21.734949][ T286] RIP: 0033:0x7f3367ffa019 [ 21.739178][ T286] 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 [ 21.759312][ T286] RSP: 002b:00007ffe3f58e9d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 21.767640][ T286] RAX: ffffffffffffffda RBX: 00007ffe3f58e9e0 RCX: 00007f3367ffa019 [ 21.775554][ T286] RDX: 0000000000000002 RSI: 0000000020000080 RDI: 0000000000000004 [ 21.783437][ T286] RBP: 00007ffe3f58e9e8 R08: 00007f3367fc70a0 R09: 00007f3367fc70a0 [ 21.791279][ T286] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 21.799074][ T286] R13: 00007ffe3f58ec48 R14: 0000000000000001 R15: 0000000000000001 [ 21.806870][ T286] Modules linked in: [ 21.810825][ T286] ---[ end trace 084dfe476fed37d8 ]--- [ 21.816239][ T286] RIP: 0010:security_inode_getattr+0x47/0x130 [ 21.822096][ T286] Code: 3f ff 49 8d 5f 08 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 87 d6 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 6a d6 7c ff 48 8b 1b 48 83 c3 0c [ 21.841589][ T286] RSP: 0018:ffffc90000bc6f90 EFLAGS: 00010206 [ 21.847461][ T286] RAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff88811ee8bb40 [ 21.855281][ T286] RDX: 0000000000000000 RSI: ffffc90000bc7400 RDI: ffffc90000bc73f0 [ 21.863155][ T286] RBP: ffffc90000bc6fb8 R08: dffffc0000000000 R09: ffffc90000bc73f0 [ 21.871004][ T286] R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90000bc7400 [ 21.878790][ T286] R13: dffffc0000000000 R14: 0000000000000000 R15: ffffc90000bc73f0 [ 21.886614][ T286] FS: 0000555556717480(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 21.895372][ T286] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.901782][ T286] CR2: 0000000000000000 CR3: 000000011932e000 CR4: 00000000003506b0 [ 21.909662][ T286] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.917701][ T286] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.925509][ T286] Kernel panic - not syncing: Fatal exception [ 21.931737][ T286] Kernel Offset: disabled [ 21.935864][ T286] Rebooting in 86400 seconds..