syzkaller syzkaller login: [ 14.570042][ T30] kauditd_printk_skb: 31 callbacks suppressed [ 14.570058][ T30] audit: type=1400 audit(1782495097.112:59): avc: denied { transition } for pid=223 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 [ 14.581718][ T30] audit: type=1400 audit(1782495097.112:60): avc: denied { noatsecure } for pid=223 comm="sshd-session" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 14.589624][ T30] audit: type=1400 audit(1782495097.122:61): avc: denied { write } for pid=223 comm="sh" path="pipe:[14595]" dev="pipefs" ino=14595 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 [ 14.610996][ T30] audit: type=1400 audit(1782495097.122:62): avc: denied { rlimitinh } for pid=223 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 14.629762][ T30] audit: type=1400 audit(1782495097.122:63): avc: denied { siginh } for pid=223 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.1.48' (ED25519) to the list of known hosts. 2026/06/26 17:31:47 parsed 1 programs 2026/06/26 17:31:47 serving rpc on tcp://45819 [ 24.761451][ T30] audit: type=1400 audit(1782495107.302:64): 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 [ 24.783641][ T30] audit: type=1400 audit(1782495107.302:65): 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 [ 25.790876][ T30] audit: type=1400 audit(1782495108.332:66): 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 [ 25.794451][ T299] cgroup: Unknown subsys name 'net' [ 25.813572][ T30] audit: type=1400 audit(1782495108.332:67): 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 [ 25.840929][ T30] audit: type=1400 audit(1782495108.362:68): 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 [ 25.841417][ T299] cgroup: Unknown subsys name 'devices' [ 25.979716][ T299] cgroup: Unknown subsys name 'hugetlb' [ 25.985383][ T299] cgroup: Unknown subsys name 'rlimit' [ 26.133138][ T30] audit: type=1400 audit(1782495108.672:69): 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 [ 26.156351][ T30] audit: type=1400 audit(1782495108.672:70): 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 [ 26.176761][ T30] audit: type=1400 audit(1782495108.672:71): 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 [ 26.197113][ T30] audit: type=1400 audit(1782495108.672:72): 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 [ 26.216536][ T303] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). [ 26.217852][ T30] audit: type=1400 audit(1782495108.682:73): 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 Setting up swapspace version 1, size = 127995904 bytes [ 26.298835][ T299] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 26.741961][ T307] request_module fs-gadgetfs succeeded, but still no fs? [ 26.866796][ T316] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.873943][ T316] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.881473][ T316] device bridge_slave_0 entered promiscuous mode [ 26.889294][ T316] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.896345][ T316] bridge0: port 2(bridge_slave_1) entered disabled state [ 26.903823][ T316] device bridge_slave_1 entered promiscuous mode [ 26.946388][ T316] bridge0: port 2(bridge_slave_1) entered blocking state [ 26.953636][ T316] bridge0: port 2(bridge_slave_1) entered forwarding state [ 26.960992][ T316] bridge0: port 1(bridge_slave_0) entered blocking state [ 26.968101][ T316] bridge0: port 1(bridge_slave_0) entered forwarding state [ 26.987556][ T10] bridge0: port 1(bridge_slave_0) entered disabled state [ 26.995066][ T10] bridge0: port 2(bridge_slave_1) entered disabled state [ 27.003235][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 27.011597][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 27.021658][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 27.029996][ T10] bridge0: port 1(bridge_slave_0) entered blocking state [ 27.037030][ T10] bridge0: port 1(bridge_slave_0) entered forwarding state [ 27.046172][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 27.054494][ T10] bridge0: port 2(bridge_slave_1) entered blocking state [ 27.061618][ T10] bridge0: port 2(bridge_slave_1) entered forwarding state [ 27.074704][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 27.084160][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 27.098213][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 27.110522][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 27.118764][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 27.126179][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 27.135986][ T316] device veth0_vlan entered promiscuous mode [ 27.146035][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 27.155207][ T316] device veth1_macvtap entered promiscuous mode [ 27.164524][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 27.175735][ T10] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 27.205576][ T316] syz-executor (316) used greatest stack depth: 21376 bytes left 2026/06/26 17:31:50 executed programs: 0 [ 28.004801][ T8] device bridge_slave_1 left promiscuous mode [ 28.011173][ T8] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.019016][ T8] device bridge_slave_0 left promiscuous mode [ 28.025306][ T8] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.033390][ T8] device veth1_macvtap left promiscuous mode [ 28.039711][ T8] device veth0_vlan left promiscuous mode [ 28.133597][ T370] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.141103][ T370] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.148789][ T370] device bridge_slave_0 entered promiscuous mode [ 28.155750][ T370] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.162911][ T370] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.170308][ T370] device bridge_slave_1 entered promiscuous mode [ 28.213907][ T370] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.220986][ T370] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.228287][ T370] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.235324][ T370] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.254317][ T320] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 28.262153][ T320] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.269817][ T320] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.279192][ T320] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 28.287399][ T320] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.294472][ T320] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.303055][ T320] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 28.311336][ T320] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.318515][ T320] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.330472][ T320] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 28.346022][ T320] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 28.357750][ T320] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 28.369594][ T370] device veth0_vlan entered promiscuous mode [ 28.378872][ T320] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 28.387283][ T320] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 28.394930][ T320] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 28.407128][ T370] device veth1_macvtap entered promiscuous mode [ 28.414479][ T320] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 28.427147][ T320] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 28.437732][ T320] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 28.560336][ T374] loop2: detected capacity change from 0 to 40427 [ 28.602778][ T374] F2FS-fs (loop2): invalid crc value [ 28.615349][ T374] F2FS-fs (loop2): Found nat_bits in checkpoint [ 28.647067][ T374] F2FS-fs (loop2): Start checkpoint disabled! [ 28.654129][ T374] F2FS-fs (loop2): Mounted with checkpoint version = 48b305e6 [ 28.673546][ T374] F2FS-fs (loop2): switch discard_unit option is not allowed [ 28.675535][ T377] general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN [ 28.692693][ T377] KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] [ 28.701139][ T377] CPU: 0 PID: 377 Comm: syz.2.17 Not tainted syzkaller #0 [ 28.708350][ T377] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 28.718415][ T377] RIP: 0010:update_sit_entry+0x5a1/0xf40 [ 28.724084][ T377] Code: 8b 45 c8 48 8d 58 18 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 ac 81 90 ff 48 8b 1b 4c 01 f3 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 86 08 00 00 44 0f b6 33 44 89 f0 44 8b [ 28.743701][ T377] RSP: 0018:ffffc90000b069e0 EFLAGS: 00010246 [ 28.749869][ T377] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888111cd0000 [ 28.757952][ T377] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 28.765942][ T377] RBP: ffffc90000b06a60 R08: ffff8881118be029 R09: 1ffff11022317c05 [ 28.773924][ T377] R10: dffffc0000000000 R11: ffffed1022317c06 R12: 1ffff11022317030 [ 28.781911][ T377] R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881113de000 [ 28.789897][ T377] FS: 0000555587bf8500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 28.798836][ T377] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.805427][ T377] CR2: 00001ffffffffe00 CR3: 000000012c1aa000 CR4: 00000000003506b0 [ 28.813414][ T377] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.821395][ T377] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.829373][ T377] Call Trace: [ 28.832659][ T377] [ 28.835606][ T377] f2fs_allocate_data_block+0x13b0/0x3140 [ 28.841365][ T377] ? __mod_memcg_lruvec_state+0x122/0x1b0 [ 28.847096][ T377] ? unlock_page_memcg+0x114/0x130 [ 28.852218][ T377] do_write_page+0x12e/0x9f0 [ 28.856823][ T377] f2fs_outplace_write_data+0xf6/0x240 [ 28.862303][ T377] f2fs_convert_inline_page+0x7eb/0xfc0 [ 28.867867][ T377] ? f2fs_put_page+0x1a0/0x1a0 [ 28.872657][ T377] ? f2fs_convert_inline_inode+0x610/0x610 [ 28.878476][ T377] f2fs_convert_inline_inode+0x554/0x610 [ 28.884123][ T377] ? file_update_time+0x2f1/0x440 [ 28.889169][ T377] ? f2fs_put_dnode+0x160/0x160 [ 28.894047][ T377] f2fs_file_write_iter+0x933/0x29f0 [ 28.899346][ T377] ? f2fs_file_read_iter+0x1020/0x1020 [ 28.904825][ T377] ? f2fs_file_read_iter+0x1020/0x1020 [ 28.910304][ T377] ? is_bpf_text_address+0x177/0x190 [ 28.915609][ T377] ? memset+0x35/0x40 [ 28.919602][ T377] ? iov_iter_kvec+0xbc/0x180 [ 28.924299][ T377] __kernel_write+0x521/0x970 [ 28.928988][ T377] ? vfs_read+0xc20/0xc20 [ 28.933331][ T377] ? f2fs_llseek+0x15ef/0x19c0 [ 28.938200][ T377] ? vfs_read+0xc20/0xc20 [ 28.942539][ T377] ? arch_do_signal_or_restart+0xe2/0x1100 [ 28.948359][ T377] ? irqentry_exit_to_user_mode+0x9/0x10 [ 28.954242][ T377] __dump_emit+0x255/0x380 [ 28.958696][ T377] ? wait_for_dump_helpers+0x380/0x380 [ 28.964188][ T377] dump_emit+0x36a/0x3d0 [ 28.968455][ T377] writenote+0x1bd/0x2f0 [ 28.972747][ T377] ? create_elf_tables+0x12a0/0x12a0 [ 28.978046][ T377] ? dump_emit+0x36a/0x3d0 [ 28.982480][ T377] elf_core_dump+0x2926/0x2ff0 [ 28.987263][ T377] ? load_elf_binary+0x2910/0x2910 [ 28.992389][ T377] ? __kmalloc+0x13d/0x2c0 [ 28.996857][ T377] ? kvmalloc_node+0x23c/0x320 [ 29.001652][ T377] do_coredump+0x13c2/0x27d0 [ 29.006264][ T377] ? simple_acl_create+0x1c0/0x1c0 [ 29.011393][ T377] ? debug_smp_processor_id+0x17/0x20 [ 29.016862][ T377] ? ____kasan_slab_free+0x130/0x160 [ 29.022162][ T377] ? get_signal+0xb17/0x1430 [ 29.026768][ T377] ? kmem_cache_free+0x100/0x320 [ 29.031724][ T377] get_signal+0x387/0x1430 [ 29.036161][ T377] arch_do_signal_or_restart+0xe2/0x1100 [ 29.041806][ T377] ? do_kern_addr_fault+0x80/0x80 [ 29.046847][ T377] ? get_sigframe_size+0x10/0x10 [ 29.051807][ T377] exit_to_user_mode_loop+0xa7/0xe0 [ 29.057015][ T377] exit_to_user_mode_prepare+0x87/0xd0 [ 29.062481][ T377] irqentry_exit_to_user_mode+0x9/0x10 [ 29.067952][ T377] irqentry_exit+0x12/0x40 [ 29.072376][ T377] exc_page_fault+0x5e/0xb0 [ 29.076893][ T377] asm_exc_page_fault+0x27/0x30 [ 29.081761][ T377] RIP: 0033:0x0 [ 29.085227][ T377] Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6. [ 29.092955][ T377] RSP: 002b:00002000000001c8 EFLAGS: 00010217 [ 29.099032][ T377] RAX: 0000000000000000 RBX: 00007f47f8b8ffa0 RCX: 00007f47f8916e59 [ 29.107023][ T377] RDX: 0000200000000200 RSI: 00002000000001c0 RDI: 0000000000001000 [ 29.115005][ T377] RBP: 00007f47f89ace6f R08: 0000000000000000 R09: 0000000000000000 [ 29.122984][ T377] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 [ 29.130968][ T377] R13: 00007f47f8b8ffac R14: 00007f47f8b8ffa0 R15: 00007f47f8b8ffa0 [ 29.138956][ T377] [ 29.141984][ T377] Modules linked in: [ 29.151677][ T370] attempt to access beyond end of device [ 29.151677][ T370] loop2: rw=524288, want=45072, limit=40427 [ 29.163236][ T370] attempt to access beyond end of device [ 29.163236][ T370] loop2: rw=0, want=45072, limit=40427 [ 29.174710][ T377] ---[ end trace 9cc21f3ca44d76c2 ]--- [ 29.192503][ T377] RIP: 0010:update_sit_entry+0x5a1/0xf40 [ 29.198380][ T377] Code: 8b 45 c8 48 8d 58 18 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 ac 81 90 ff 48 8b 1b 4c 01 f3 48 89 d8 48 c1 e8 03 <42> 0f b6 04 28 84 c0 0f 85 86 08 00 00 44 0f b6 33 44 89 f0 44 8b [ 29.218309][ T377] RSP: 0018:ffffc90000b069e0 EFLAGS: 00010246 [ 29.224416][ T377] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888111cd0000 [ 29.232889][ T377] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 29.240946][ T377] RBP: ffffc90000b06a60 R08: ffff8881118be029 R09: 1ffff11022317c05 [ 29.249407][ T377] R10: dffffc0000000000 R11: ffffed1022317c06 R12: 1ffff11022317030 [ 29.257410][ T377] R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8881113de000 [ 29.265507][ T377] FS: 0000555587bf8500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 29.274563][ T377] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.281409][ T377] CR2: 0000000003466540 CR3: 000000012c1aa000 CR4: 00000000003506b0 [ 29.289539][ T377] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.297659][ T377] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.305829][ T377] Kernel panic - not syncing: Fatal exception [ 29.312181][ T377] Kernel Offset: disabled [ 29.316521][ T377] Rebooting in 86400 seconds..