ss permissive=1 [ 15.511914][ T30] audit: type=1400 audit(1782507273.350:63): 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 '10.128.1.41' (ED25519) to the list of known hosts. 2026/06/26 20:54:43 parsed 1 programs 2026/06/26 20:54:43 serving rpc on tcp://46465 [ 25.798035][ T30] audit: type=1400 audit(1782507283.690:64): 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 [ 25.819437][ T30] audit: type=1400 audit(1782507283.690:65): 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 [ 26.821516][ T30] audit: type=1400 audit(1782507284.710:66): 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 [ 26.824877][ T299] cgroup: Unknown subsys name 'net' [ 26.844307][ T30] audit: type=1400 audit(1782507284.710:67): 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 [ 26.871709][ T30] audit: type=1400 audit(1782507284.740:68): 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 [ 26.872203][ T299] cgroup: Unknown subsys name 'devices' [ 27.017982][ T299] cgroup: Unknown subsys name 'hugetlb' [ 27.023619][ T299] cgroup: Unknown subsys name 'rlimit' [ 27.171680][ T30] audit: type=1400 audit(1782507285.060:69): 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 [ 27.194932][ T30] audit: type=1400 audit(1782507285.060:70): 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 [ 27.215395][ T30] audit: type=1400 audit(1782507285.060:71): 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 [ 27.235734][ T30] audit: type=1400 audit(1782507285.060:72): 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 [ 27.239918][ T304] SELinux: Context root:object_r:swapfile_t is not valid (left unmapped). Setting up swapspace version 1, size = 127995904 bytes [ 27.256194][ T30] audit: type=1400 audit(1782507285.060:73): 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 [ 27.291085][ T299] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k [ 27.719651][ T306] request_module fs-gadgetfs succeeded, but still no fs? [ 28.365858][ T355] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.373199][ T355] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.380860][ T355] device bridge_slave_0 entered promiscuous mode [ 28.387849][ T355] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.394879][ T355] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.402420][ T355] device bridge_slave_1 entered promiscuous mode [ 28.444428][ T355] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.451556][ T355] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.458905][ T355] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.466031][ T355] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.485345][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 28.492981][ T311] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.500282][ T311] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.509191][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 28.517439][ T311] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.524497][ T311] bridge0: port 1(bridge_slave_0) entered forwarding state [ 28.533720][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 28.541986][ T311] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.549049][ T311] bridge0: port 2(bridge_slave_1) entered forwarding state [ 28.561144][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 28.570773][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 28.584611][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 28.595851][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 28.604084][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 28.611814][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 28.620172][ T355] device veth0_vlan entered promiscuous mode [ 28.630497][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 28.639650][ T355] device veth1_macvtap entered promiscuous mode [ 28.649075][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 28.659296][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 28.693339][ T355] syz-executor (355) used greatest stack depth: 22024 bytes left 2026/06/26 20:54:46 executed programs: 0 [ 28.950810][ T366] bridge0: port 1(bridge_slave_0) entered blocking state [ 28.958175][ T366] bridge0: port 1(bridge_slave_0) entered disabled state [ 28.965673][ T366] device bridge_slave_0 entered promiscuous mode [ 28.972752][ T366] bridge0: port 2(bridge_slave_1) entered blocking state [ 28.979864][ T366] bridge0: port 2(bridge_slave_1) entered disabled state [ 28.987368][ T366] device bridge_slave_1 entered promiscuous mode [ 29.055723][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 29.063173][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 29.071874][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 29.080220][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 29.088612][ T311] bridge0: port 1(bridge_slave_0) entered blocking state [ 29.095664][ T311] bridge0: port 1(bridge_slave_0) entered forwarding state [ 29.103167][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 29.116124][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 29.124769][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 29.133160][ T311] bridge0: port 2(bridge_slave_1) entered blocking state [ 29.140261][ T311] bridge0: port 2(bridge_slave_1) entered forwarding state [ 29.156948][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 29.165094][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 29.180023][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 29.189391][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 29.197519][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 29.205025][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 29.214008][ T366] device veth0_vlan entered promiscuous mode [ 29.225723][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 29.235297][ T366] device veth1_macvtap entered promiscuous mode [ 29.246992][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 29.257865][ T311] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 29.291553][ T372] loop2: detected capacity change from 0 to 1024 [ 29.387742][ T372] EXT4-fs (loop2): mounted filesystem without journal. Opts: resgid=0x000000000000ee00,bsddf,grpquota,nojournal_checksum,debug_want_extra_isize=0x0000000000000080,delalloc,nogrpid,noauto_da_alloc,stripe=0x0000000000000002,,errors=continue. Quota mode: writeback. [ 29.422210][ T372] ================================================================== [ 29.430437][ T372] BUG: KASAN: use-after-free in ext4_xattr_ibody_get+0x606/0x670 [ 29.438388][ T372] Read of size 4 at addr ffff88812b77e004 by task syz.2.17/372 [ 29.445954][ T372] [ 29.448420][ T372] CPU: 1 PID: 372 Comm: syz.2.17 Not tainted syzkaller #0 [ 29.455537][ T372] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 29.465595][ T372] Call Trace: [ 29.468876][ T372] [ 29.471813][ T372] __dump_stack+0x21/0x30 [ 29.476145][ T372] dump_stack_lvl+0x110/0x170 [ 29.480839][ T372] ? show_regs_print_info+0x20/0x20 [ 29.486045][ T372] ? load_image+0x3f0/0x3f0 [ 29.490564][ T372] print_address_description+0x7f/0x2c0 [ 29.496114][ T372] ? ext4_xattr_ibody_get+0x606/0x670 [ 29.501504][ T372] kasan_report+0x10f/0x150 [ 29.506013][ T372] ? ext4_xattr_ibody_get+0x606/0x670 [ 29.511408][ T372] __asan_report_load4_noabort+0x14/0x20 [ 29.517057][ T372] ext4_xattr_ibody_get+0x606/0x670 [ 29.522259][ T372] ? mb_cache_entry_put+0x90/0x90 [ 29.527284][ T372] ? down_read+0xab/0x100 [ 29.531610][ T372] ext4_xattr_get+0x116/0x830 [ 29.536283][ T372] ? get_cached_acl+0x2a0/0x2f0 [ 29.541134][ T372] ext4_get_acl+0x85/0x6c0 [ 29.545546][ T372] ? __kasan_check_write+0x14/0x20 [ 29.550652][ T372] ? _raw_spin_lock+0x94/0xf0 [ 29.555331][ T372] get_acl+0x161/0x270 [ 29.559397][ T372] posix_acl_chmod+0xe9/0x250 [ 29.564095][ T372] ext4_setattr+0xb6b/0x1b10 [ 29.568689][ T372] ? atime_needs_update+0x810/0x810 [ 29.573892][ T372] ? ext4_write_inode+0x5a0/0x5a0 [ 29.578914][ T372] notify_change+0xc30/0xf40 [ 29.583670][ T372] chmod_common+0x21a/0x3c0 [ 29.588187][ T372] ? __ia32_sys_chroot+0x40/0x40 [ 29.593145][ T372] ? slab_free_freelist_hook+0xc2/0x190 [ 29.598696][ T372] ? user_path_at_empty+0x162/0x1c0 [ 29.603905][ T372] do_fchmodat+0xd4/0x1a0 [ 29.608236][ T372] ? unlock_page_memcg+0x130/0x130 [ 29.613351][ T372] ? do_faccessat+0x9b0/0x9b0 [ 29.618028][ T372] ? debug_smp_processor_id+0x17/0x20 [ 29.623399][ T372] __x64_sys_chmod+0x60/0x70 [ 29.628012][ T372] x64_sys_call+0xad/0x9a0 [ 29.632607][ T372] do_syscall_64+0x4c/0xa0 [ 29.637033][ T372] ? clear_bhb_loop+0x50/0xa0 [ 29.641734][ T372] ? clear_bhb_loop+0x50/0xa0 [ 29.646406][ T372] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 29.652296][ T372] RIP: 0033:0x7ff8efe9ce59 [ 29.656710][ T372] 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 [ 29.676406][ T372] RSP: 002b:00007ffe822558d8 EFLAGS: 00000246 ORIG_RAX: 000000000000005a [ 29.684916][ T372] RAX: ffffffffffffffda RBX: 00007ff8f0115fa0 RCX: 00007ff8efe9ce59 [ 29.692894][ T372] RDX: 0000000000000000 RSI: 000000000000023f RDI: 0000200000000180 [ 29.700862][ T372] RBP: 00007ff8eff32e6f R08: 0000000000000000 R09: 0000000000000000 [ 29.708834][ T372] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 29.716816][ T372] R13: 00007ff8f0115fac R14: 00007ff8f0115fa0 R15: 00007ff8f0115fa0 [ 29.724828][ T372] [ 29.727875][ T372] [ 29.730200][ T372] Allocated by task 307: [ 29.734520][ T372] __kasan_kmalloc+0xd4/0x100 [ 29.739218][ T372] kmem_cache_alloc_trace+0x119/0x270 [ 29.744596][ T372] kernfs_fop_open+0x8c0/0xbb0 [ 29.749455][ T372] do_dentry_open+0x82a/0x1010 [ 29.754222][ T372] vfs_open+0x73/0x80 [ 29.758204][ T372] path_openat+0x26e6/0x2f80 [ 29.762794][ T372] do_filp_open+0x1df/0x400 [ 29.767298][ T372] do_sys_openat2+0x15e/0x7f0 [ 29.771981][ T372] __x64_sys_openat+0x136/0x160 [ 29.776838][ T372] x64_sys_call+0x219/0x9a0 [ 29.781497][ T372] do_syscall_64+0x4c/0xa0 [ 29.785948][ T372] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 29.791898][ T372] [ 29.794227][ T372] Freed by task 307: [ 29.798120][ T372] kasan_set_track+0x4a/0x70 [ 29.802751][ T372] kasan_set_free_info+0x23/0x40 [ 29.807695][ T372] ____kasan_slab_free+0x125/0x160 [ 29.812809][ T372] __kasan_slab_free+0x11/0x20 [ 29.817568][ T372] slab_free_freelist_hook+0xc2/0x190 [ 29.822942][ T372] kfree+0xc4/0x270 [ 29.826754][ T372] kernfs_put_open_node+0x231/0x240 [ 29.831946][ T372] kernfs_fop_release+0x189/0x240 [ 29.836986][ T372] __fput+0x22b/0x900 [ 29.840965][ T372] ____fput+0x15/0x20 [ 29.844943][ T372] task_work_run+0x127/0x190 [ 29.849535][ T372] exit_to_user_mode_loop+0xd0/0xe0 [ 29.854899][ T372] exit_to_user_mode_prepare+0x87/0xd0 [ 29.860367][ T372] syscall_exit_to_user_mode+0x1a/0x30 [ 29.865828][ T372] do_syscall_64+0x58/0xa0 [ 29.870244][ T372] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 29.876146][ T372] [ 29.878483][ T372] The buggy address belongs to the object at ffff88812b77e000 [ 29.878483][ T372] which belongs to the cache kmalloc-64 of size 64 [ 29.892361][ T372] The buggy address is located 4 bytes inside of [ 29.892361][ T372] 64-byte region [ffff88812b77e000, ffff88812b77e040) [ 29.905370][ T372] The buggy address belongs to the page: [ 29.911093][ T372] page:ffffea0004addf80 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12b77e [ 29.921338][ T372] flags: 0x4000000000000200(slab|zone=1) [ 29.927416][ T372] raw: 4000000000000200 0000000000000000 dead000000000122 ffff888100042780 [ 29.936647][ T372] raw: 0000000000000000 0000000080200020 00000001ffffffff 0000000000000000 [ 29.945228][ T372] page dumped because: kasan: bad access detected [ 29.951634][ T372] page_owner tracks the page as allocated [ 29.957367][ T372] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x112cc0(GFP_USER|__GFP_NOWARN|__GFP_NORETRY), pid 101, ts 29427593167, free_ts 28177513826 [ 29.973373][ T372] post_alloc_hook+0x192/0x1b0 [ 29.978145][ T372] prep_new_page+0x1c/0x110 [ 29.982640][ T372] get_page_from_freelist+0x2c3a/0x2cd0 [ 29.988177][ T372] __alloc_pages+0x1a2/0x460 [ 29.992763][ T372] new_slab+0xa0/0x4d0 [ 29.996829][ T372] ___slab_alloc+0x3ac/0x840 [ 30.001431][ T372] __slab_alloc+0x49/0x90 [ 30.005754][ T372] kmem_cache_alloc_trace+0x146/0x270 [ 30.011211][ T372] kernfs_fop_open+0x8c0/0xbb0 [ 30.015987][ T372] do_dentry_open+0x82a/0x1010 [ 30.020767][ T372] vfs_open+0x73/0x80 [ 30.024745][ T372] path_openat+0x26e6/0x2f80 [ 30.029328][ T372] do_filp_open+0x1df/0x400 [ 30.033832][ T372] do_sys_openat2+0x15e/0x7f0 [ 30.038508][ T372] __x64_sys_openat+0x136/0x160 [ 30.043356][ T372] x64_sys_call+0x219/0x9a0 [ 30.047860][ T372] page last free stack trace: [ 30.052523][ T372] free_unref_page_prepare+0x5fa/0x600 [ 30.057979][ T372] free_unref_page+0xae/0x540 [ 30.062673][ T372] __free_pages+0x6c/0x100 [ 30.067086][ T372] __vunmap+0x801/0x980 [ 30.071235][ T372] vfree+0x8b/0xc0 [ 30.074948][ T372] kcov_close+0x2b/0x50 [ 30.079097][ T372] __fput+0x22b/0x900 [ 30.083166][ T372] ____fput+0x15/0x20 [ 30.087142][ T372] task_work_run+0x127/0x190 [ 30.091723][ T372] do_exit+0xb70/0x29a0 [ 30.095870][ T372] do_group_exit+0x149/0x310 [ 30.100461][ T372] get_signal+0x64f/0x1430 [ 30.104876][ T372] arch_do_signal_or_restart+0xe2/0x1100 [ 30.110503][ T372] exit_to_user_mode_loop+0xa7/0xe0 [ 30.115711][ T372] exit_to_user_mode_prepare+0x87/0xd0 [ 30.121165][ T372] syscall_exit_to_user_mode+0x1a/0x30 [ 30.126624][ T372] [ 30.128944][ T372] Memory state around the buggy address: [ 30.134563][ T372] ffff88812b77df00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.142614][ T372] ffff88812b77df80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.150668][ T372] >ffff88812b77e000: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 30.158718][ T372] ^ [ 30.162891][ T372] ffff88812b77e080: fa fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc [ 30.170956][ T372] ffff88812b77e100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 30.179011][ T372] ================================================================== [ 30.187062][ T372] Disabling lock debugging due to kernel taint [ 30.195430][ T372] EXT4-fs error (device loop2): xattr_find_entry:297: inode #12: comm syz.2.17: corrupted xattr entries