syzkaller syzkaller login: [ 7.807611][ T104] udevd (104) used greatest stack depth: 21800 bytes left [ 10.862914][ T30] kauditd_printk_skb: 48 callbacks suppressed [ 10.862931][ T30] audit: type=1400 audit(1782634542.671:59): avc: denied { transition } for pid=220 comm="sshd-session" path="/bin/sh" dev="sda1" ino=90 scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 10.879323][ T30] audit: type=1400 audit(1782634542.671:60): avc: denied { noatsecure } for pid=220 comm="sshd-session" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 10.892909][ T30] audit: type=1400 audit(1782634542.681:61): avc: denied { write } for pid=220 comm="sh" path="pipe:[14622]" dev="pipefs" ino=14622 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 [ 10.915402][ T30] audit: type=1400 audit(1782634542.681:62): avc: denied { rlimitinh } for pid=220 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 10.935141][ T30] audit: type=1400 audit(1782634542.681:63): avc: denied { siginh } for pid=220 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.1.114' (ED25519) to the list of known hosts. 2026/06/28 08:15:52 parsed 1 programs 2026/06/28 08:15:52 serving rpc on tcp://40073 [ 20.604998][ T30] audit: type=1400 audit(1782634552.411:64): avc: denied { node_bind } for pid=293 comm="syz-execprog" saddr=::1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:node_t tclass=tcp_socket permissive=1 [ 20.625889][ T30] audit: type=1400 audit(1782634552.411:65): avc: denied { module_request } for pid=293 comm="syz-execprog" kmod="net-pf-2-proto-262-type-1" scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:kernel_t tclass=system permissive=1 [ 21.331901][ T30] audit: type=1400 audit(1782634553.141:66): avc: denied { mounton } for pid=299 comm="syz-executor" path="/syzcgroup/unified" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:root_t tclass=dir permissive=1 [ 21.332903][ T299] cgroup: Unknown subsys name 'net' [ 21.354868][ T30] audit: type=1400 audit(1782634553.141:67): avc: denied { mount } for pid=299 comm="syz-executor" name="/" dev="cgroup2" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 21.382180][ T30] audit: type=1400 audit(1782634553.171:68): avc: denied { unmount } for pid=299 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1 [ 21.382336][ T299] cgroup: Unknown subsys name 'devices' [ 21.469247][ T299] cgroup: Unknown subsys name 'hugetlb' [ 21.474861][ T299] cgroup: Unknown subsys name 'rlimit' [ 21.586539][ T30] audit: type=1400 audit(1782634553.391:69): avc: denied { setattr } for pid=299 comm="syz-executor" name="raw-gadget" dev="devtmpfs" ino=254 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:device_t tclass=chr_file permissive=1 [ 21.609723][ T30] audit: type=1400 audit(1782634553.391:70): avc: denied { create } for pid=299 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 21.630200][ T30] audit: type=1400 audit(1782634553.391:71): avc: denied { write } for pid=299 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 21.650528][ T30] audit: type=1400 audit(1782634553.421:72): avc: denied { read } for pid=299 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_generic_socket permissive=1 [ 21.666530][ T303] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). Setting up swapspace version 1, size = 127995904 bytes [ 21.671057][ T30] audit: type=1400 audit(1782634553.421:73): avc: denied { mounton } for pid=299 comm="syz-executor" path="/proc/sys/fs/binfmt_misc" dev="binfmt_misc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:binfmt_misc_fs_t tclass=dir permissive=1 [ 21.692731][ T299] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 22.138905][ T306] request_module fs-gadgetfs succeeded, but still no fs? [ 22.353718][ T323] bridge0: port 1(bridge_slave_0) entered blocking state [ 22.360913][ T323] bridge0: port 1(bridge_slave_0) entered disabled state [ 22.368382][ T323] device bridge_slave_0 entered promiscuous mode [ 22.376040][ T323] bridge0: port 2(bridge_slave_1) entered blocking state [ 22.383116][ T323] bridge0: port 2(bridge_slave_1) entered disabled state [ 22.390620][ T323] device bridge_slave_1 entered promiscuous mode [ 22.427355][ T323] bridge0: port 2(bridge_slave_1) entered blocking state [ 22.434404][ T323] bridge0: port 2(bridge_slave_1) entered forwarding state [ 22.441687][ T323] bridge0: port 1(bridge_slave_0) entered blocking state [ 22.448726][ T323] bridge0: port 1(bridge_slave_0) entered forwarding state [ 22.466449][ T324] bridge0: port 1(bridge_slave_0) entered disabled state [ 22.474288][ T324] bridge0: port 2(bridge_slave_1) entered disabled state [ 22.481741][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 22.489187][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 22.499669][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 22.507824][ T324] bridge0: port 1(bridge_slave_0) entered blocking state [ 22.514837][ T324] bridge0: port 1(bridge_slave_0) entered forwarding state [ 22.524100][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 22.532252][ T324] bridge0: port 2(bridge_slave_1) entered blocking state [ 22.539380][ T324] bridge0: port 2(bridge_slave_1) entered forwarding state [ 22.551230][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 22.561093][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 22.573627][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 22.584313][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 22.592410][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 22.600010][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 22.609279][ T323] device veth0_vlan entered promiscuous mode [ 22.618586][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 22.627612][ T323] device veth1_macvtap entered promiscuous mode [ 22.636711][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 22.647873][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2026/06/28 08:15:55 executed programs: 0 [ 23.272805][ T369] bridge0: port 1(bridge_slave_0) entered blocking state [ 23.279886][ T369] bridge0: port 1(bridge_slave_0) entered disabled state [ 23.287232][ T369] device bridge_slave_0 entered promiscuous mode [ 23.293960][ T369] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.301222][ T369] bridge0: port 2(bridge_slave_1) entered disabled state [ 23.308628][ T369] device bridge_slave_1 entered promiscuous mode [ 23.348660][ T369] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.355707][ T369] bridge0: port 2(bridge_slave_1) entered forwarding state [ 23.363009][ T369] bridge0: port 1(bridge_slave_0) entered blocking state [ 23.370064][ T369] bridge0: port 1(bridge_slave_0) entered forwarding state [ 23.387714][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 23.395252][ T324] bridge0: port 1(bridge_slave_0) entered disabled state [ 23.402715][ T324] bridge0: port 2(bridge_slave_1) entered disabled state [ 23.410916][ T8] device bridge_slave_1 left promiscuous mode [ 23.417020][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 23.424973][ T8] device bridge_slave_0 left promiscuous mode [ 23.431191][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 23.439068][ T8] device veth1_macvtap left promiscuous mode [ 23.445066][ T8] device veth0_vlan left promiscuous mode [ 23.493377][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 23.501729][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 23.509898][ T324] bridge0: port 1(bridge_slave_0) entered blocking state [ 23.516952][ T324] bridge0: port 1(bridge_slave_0) entered forwarding state [ 23.525683][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 23.534049][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 23.542227][ T324] bridge0: port 2(bridge_slave_1) entered blocking state [ 23.549264][ T324] bridge0: port 2(bridge_slave_1) entered forwarding state [ 23.560831][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 23.568902][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 23.577689][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 23.585703][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 23.598863][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 23.607245][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 23.618395][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 23.626291][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 23.634354][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 23.641880][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 23.649963][ T369] device veth0_vlan entered promiscuous mode [ 23.659349][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 23.667690][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 23.676881][ T369] device veth1_macvtap entered promiscuous mode [ 23.689565][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 23.697549][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 23.705859][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 23.715032][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 23.723525][ T324] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 23.852600][ T375] general protection fault, probably for non-canonical address 0xdffffc0000000007: 0000 [#1] PREEMPT SMP KASAN [ 23.864348][ T375] KASAN: null-ptr-deref in range [0x0000000000000038-0x000000000000003f] [ 23.872747][ T375] CPU: 0 PID: 375 Comm: syz.2.17 Not tainted syzkaller #0 [ 23.879856][ T375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 23.889904][ T375] RIP: 0010:do_unlinkat+0x288/0x6c0 [ 23.895286][ T375] Code: 44 89 ee e8 ba ab b5 ff 45 31 e4 41 81 fd 00 00 20 00 41 0f 95 c4 41 83 c4 eb e9 bd 00 00 00 49 8d 7e 30 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 4c 8b 7c 24 20 74 05 e8 77 18 f5 ff 49 8b 46 30 48 [ 23.914890][ T375] RSP: 0018:ffffc90000ae7e00 EFLAGS: 00010202 [ 23.920951][ T375] RAX: 0000000000000007 RBX: 1ffff11021374738 RCX: ffff8881106ca780 [ 23.928913][ T375] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000038 [ 23.936879][ T375] RBP: ffffc90000ae7ee8 R08: ffff888109ba39ef R09: 1ffff1102137473d [ 23.944838][ T375] R10: dffffc0000000000 R11: ffffed102137473e R12: 0000000000000000 [ 23.952816][ T375] R13: dffffc0000000000 R14: 0000000000000008 R15: 0000000000000000 [ 23.960775][ T375] FS: 00007f6ee4db86c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 23.969702][ T375] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.976289][ T375] CR2: 00007f6ee4d75ff8 CR3: 0000000121bec000 CR4: 00000000003506b0 [ 23.984252][ T375] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.992223][ T375] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.000190][ T375] Call Trace: [ 24.003461][ T375] [ 24.006383][ T375] ? __check_object_size+0x2dd/0x3b0 [ 24.011661][ T375] ? fsnotify_link_count+0x100/0x100 [ 24.016955][ T375] ? getname_flags+0x205/0x510 [ 24.021714][ T375] __x64_sys_unlink+0x49/0x50 [ 24.026377][ T375] x64_sys_call+0x878/0x9a0 [ 24.030886][ T375] do_syscall_64+0x4c/0xa0 [ 24.035289][ T375] ? clear_bhb_loop+0x50/0xa0 [ 24.039956][ T375] ? clear_bhb_loop+0x50/0xa0 [ 24.044620][ T375] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 24.050502][ T375] RIP: 0033:0x7f6ee4f55e59 [ 24.054902][ T375] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 e8 ff ff ff f7 d8 64 89 01 48 [ 24.074508][ T375] RSP: 002b:00007f6ee4db8028 EFLAGS: 00000246 ORIG_RAX: 0000000000000057 [ 24.082974][ T375] RAX: ffffffffffffffda RBX: 00007f6ee51cefa0 RCX: 00007f6ee4f55e59 [ 24.091022][ T375] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000080 [ 24.099006][ T375] RBP: 00007f6ee4febe6f R08: 0000000000000000 R09: 0000000000000000 [ 24.107165][ T375] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 24.115152][ T375] R13: 00007f6ee51cf038 R14: 00007f6ee51cefa0 R15: 00007ffc37bc77a8 [ 24.123134][ T375] [ 24.126143][ T375] Modules linked in: [ 24.130681][ T375] ---[ end trace 2b7a7df7f458bfde ]--- [ 24.136180][ T375] RIP: 0010:do_unlinkat+0x288/0x6c0 [ 24.141548][ T375] Code: 44 89 ee e8 ba ab b5 ff 45 31 e4 41 81 fd 00 00 20 00 41 0f 95 c4 41 83 c4 eb e9 bd 00 00 00 49 8d 7e 30 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 4c 8b 7c 24 20 74 05 e8 77 18 f5 ff 49 8b 46 30 48 [ 24.161338][ T375] RSP: 0018:ffffc90000ae7e00 EFLAGS: 00010202 [ 24.167509][ T375] RAX: 0000000000000007 RBX: 1ffff11021374738 RCX: ffff8881106ca780 [ 24.175514][ T375] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000038 [ 24.183651][ T375] RBP: ffffc90000ae7ee8 R08: ffff888109ba39ef R09: 1ffff1102137473d [ 24.191701][ T375] R10: dffffc0000000000 R11: ffffed102137473e R12: 0000000000000000 [ 24.199697][ T375] R13: dffffc0000000000 R14: 0000000000000008 R15: 0000000000000000 [ 24.207713][ T375] FS: 00007f6ee4db86c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 24.216677][ T375] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.223434][ T375] CR2: 00007f6ee4d75ff8 CR3: 0000000121bec000 CR4: 00000000003506b0 [ 24.231529][ T375] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.239605][ T375] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.247626][ T375] Kernel panic - not syncing: Fatal exception [ 24.253770][ T375] Kernel Offset: disabled [ 24.258090][ T375] Rebooting in 86400 seconds..