./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3254946248 <...> [ 4.685417][ T102] udevd[102]: starting eudev-3.2.11 [ 4.688536][ T101] udevd (101) used greatest stack depth: 23056 bytes left [ 5.237974][ T117] scsi_id (117) used greatest stack depth: 22320 bytes left [ 8.438426][ T113] udevd (113) used greatest stack depth: 22224 bytes left [ 14.112805][ T28] kauditd_printk_skb: 50 callbacks suppressed [ 14.112818][ T28] audit: type=1400 audit(1708722502.828:61): avc: denied { transition } for pid=226 comm="sshd" path="/bin/sh" dev="sda1" ino=89 scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 14.121937][ T28] audit: type=1400 audit(1708722502.838:62): avc: denied { noatsecure } for pid=226 comm="sshd" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 14.129038][ T28] audit: type=1400 audit(1708722502.838:63): avc: denied { write } for pid=226 comm="sh" path="pipe:[12922]" dev="pipefs" ino=12922 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 [ 14.145849][ T28] audit: type=1400 audit(1708722502.838:64): avc: denied { rlimitinh } for pid=226 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 14.165063][ T28] audit: type=1400 audit(1708722502.838:65): avc: denied { siginh } for pid=226 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.10.22' (ED25519) to the list of known hosts. execve("./syz-executor3254946248", ["./syz-executor3254946248"], 0x7ffd95b12940 /* 10 vars */) = 0 brk(NULL) = 0x5555573cd000 brk(0x5555573cde00) = 0x5555573cde00 arch_prctl(ARCH_SET_FS, 0x5555573cd480) = 0 set_tid_address(0x5555573cd750) = 296 set_robust_list(0x5555573cd760, 24) = 0 rseq(0x5555573cdda0, 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-executor3254946248", 4096) = 28 getrandom("\xf0\x8f\x80\x93\x43\xd7\xe8\xd9", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555573cde00 brk(0x5555573eee00) = 0x5555573eee00 brk(0x5555573ef000) = 0x5555573ef000 mprotect(0x7f6c1c588000, 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=0x7f6c1c4e5be0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f6c1c4ecda0}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7f6c1c4e5be0, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7f6c1c4ecda0}, NULL, 8) = 0 mkdir("./file0", 0200) = 0 mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 openat(-1, ".pending_reads", O_RDONLY) = -1 EBADF (Bad file descriptor) openat(AT_FDCWD, "cgroup.controllers", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000) = 3 [ 23.891123][ T28] audit: type=1400 audit(1708722512.608:66): avc: denied { execmem } for pid=296 comm="syz-executor325" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 23.910526][ T28] audit: type=1400 audit(1708722512.608:67): avc: denied { mounton } for pid=296 comm="syz-executor325" path="/root/file0" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 23.934088][ T28] audit: type=1400 audit(1708722512.608:68): avc: denied { mount } for pid=296 comm="syz-executor325" name="/" dev="incremental-fs" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=filesystem permissive=1 write(3, "\x49\xcc\x03\xcf\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x69\x6e\x63\x72\x65\x6d\x65\x6e\x74\x61\x6c\x2d\x66\x73\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1840702809) = 16777216 mmap(0x20000000, 12288, PROT_READ, MAP_PRIVATE|MAP_FIXED|MAP_NONBLOCK, 3, 0) = 0x20000000 --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000100} --- open("./file0", O_RDONLY) = 4 --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000080} --- --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_ACCERR, si_addr=0x20000000} --- [ 24.048627][ T28] audit: type=1400 audit(1708722512.758:69): avc: denied { write } for pid=296 comm="syz-executor325" name="/" dev="incremental-fs" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 24.048823][ T296] general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] PREEMPT SMP KASAN [ 24.071722][ T28] audit: type=1400 audit(1708722512.758:70): avc: denied { add_name } for pid=296 comm="syz-executor325" 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 [ 24.083260][ T296] KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] [ 24.083277][ T296] CPU: 1 PID: 296 Comm: syz-executor325 Not tainted 6.1.68-syzkaller-00029-g8c0f9174731d #0 [ 24.083298][ T296] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 [ 24.083310][ T296] RIP: 0010:vfs_link+0x40/0x7f0 [ 24.110019][ T28] audit: type=1400 audit(1708722512.758:71): avc: denied { link } for pid=296 comm="syz-executor325" 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 [ 24.117768][ T296] Code: 89 cd 49 89 d6 48 89 75 c0 48 89 fb 49 bc 00 00 00 00 00 fc ff df e8 8f cd ac ff 48 89 5d a0 48 83 c3 30 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 71 8a f3 ff 48 8b 03 48 89 45 d0 [ 24.185516][ T296] RSP: 0018:ffffc90000e67ba8 EFLAGS: 00010206 [ 24.191414][ T296] RAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff888108dfd100 [ 24.199227][ T296] RDX: 0000000000000000 RSI: ffffffff86cf9fe0 RDI: 0000000000000000 [ 24.207041][ T296] RBP: ffffc90000e67c10 R08: 0000000000000000 R09: ffffed10200ab3d6 [ 24.214936][ T296] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 24.222836][ T296] R13: ffff88811f508770 R14: ffff888100559e00 R15: ffff888100559e00 [ 24.230646][ T296] FS: 00005555573cd480(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 24.239915][ T296] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.247982][ T296] CR2: 0000000020000000 CR3: 000000011ebc1000 CR4: 00000000003506a0 [ 24.256810][ T296] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.264606][ T296] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.272419][ T296] Call Trace: [ 24.275543][ T296] [ 24.278320][ T296] ? __die_body+0x62/0xb0 [ 24.282487][ T296] ? die_addr+0x9f/0xd0 [ 24.286478][ T296] ? exc_general_protection+0x317/0x4c0 [ 24.291875][ T296] ? asm_exc_general_protection+0x27/0x30 [ 24.297437][ T296] ? vfs_link+0x40/0x7f0 [ 24.301599][ T296] ? vfs_link+0x31/0x7f0 [ 24.305793][ T296] dir_link+0x347/0x4c0 [ 24.310708][ T296] ? dir_lookup+0x680/0x680 [ 24.315167][ T296] ? try_break_deleg+0x7c/0x120 [ 24.319980][ T296] vfs_link+0x645/0x7f0 [ 24.324154][ T296] do_linkat+0x34d/0x9f0 [ 24.328236][ T296] ? fsnotify_link+0x240/0x240 [ 24.332933][ T296] ? strncpy_from_user+0x169/0x2b0 [ 24.337873][ T296] ? getname_flags+0x1fd/0x520 [ 24.342500][ T296] __x64_sys_linkat+0xe9/0x100 [ 24.347073][ T296] do_syscall_64+0x3d/0xb0 [ 24.351322][ T296] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 24.357136][ T296] RIP: 0033:0x7f6c1c515c69 [ 24.361498][ T296] Code: 48 83 c4 28 c3 e8 37 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 [ 24.381011][ T296] RSP: 002b:00007ffec8eda488 EFLAGS: 00000246 ORIG_RAX: 0000000000000109 [ 24.389351][ T296] RAX: ffffffffffffffda RBX: 00007ffec8eda490 RCX: 00007f6c1c515c69 [ 24.397163][ T296] RDX: 0000000000000004 RSI: 0000000020000080 RDI: 0000000000000004 [ 24.404978][ T296] RBP: 00007ffec8eda498 R08: 0000000000000000 R09: 00007f6c1c4e5be0 [ 24.413132][ T296] R10: 0000000020000000 R11: 0000000000000246 R12: 0000000000000000 [ 24.420941][ T296] R13: 00007ffec8eda6f8 R14: 0000000000000001 R15: 0000000000000001 [ 24.429062][ T296] [ 24.431938][ T296] Modules linked in: [ 24.435879][ T296] ---[ end trace 0000000000000000 ]--- [ 24.441184][ T296] RIP: 0010:vfs_link+0x40/0x7f0 [ 24.445839][ T296] Code: 89 cd 49 89 d6 48 89 75 c0 48 89 fb 49 bc 00 00 00 00 00 fc ff df e8 8f cd ac ff 48 89 5d a0 48 83 c3 30 48 89 d8 48 c1 e8 03 <42> 80 3c 20 00 74 08 48 89 df e8 71 8a f3 ff 48 8b 03 48 89 45 d0 [ 24.465813][ T296] RSP: 0018:ffffc90000e67ba8 EFLAGS: 00010206 [ 24.471662][ T296] RAX: 0000000000000006 RBX: 0000000000000030 RCX: ffff888108dfd100 [ 24.479504][ T296] RDX: 0000000000000000 RSI: ffffffff86cf9fe0 RDI: 0000000000000000 [ 24.487443][ T296] RBP: ffffc90000e67c10 R08: 0000000000000000 R09: ffffed10200ab3d6 [ 24.495291][ T296] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 24.503085][ T296] R13: ffff88811f508770 R14: ffff888100559e00 R15: ffff888100559e00 [ 24.512734][ T296] FS: 00005555573cd480(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 24.522258][ T296] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.528660][ T296] CR2: 0000000020000000 CR3: 000000011ebc1000 CR4: 00000000003506a0 [ 24.536503][ T296] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.544299][ T296] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.552213][ T296] Kernel panic - not syncing: Fatal exception [ 24.558456][ T296] Kernel Offset: disabled [ 24.562587][ T296] Rebooting in 86400 seconds..