Warning: Permanently added '10.128.1.21' (ED25519) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program [ 19.680110][ T30] audit: type=1400 audit(1699881580.534:66): avc: denied { execmem } for pid=285 comm="syz-executor347" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 20.128282][ T394] ================================================================== [ 20.136175][ T394] BUG: KASAN: use-after-free in __skb_datagram_iter+0x6f8/0x760 [ 20.143636][ T394] Read of size 4 at addr ffff88811d973cf0 by task syz-executor347/394 [ 20.151619][ T394] [ 20.153788][ T394] CPU: 0 PID: 394 Comm: syz-executor347 Not tainted 5.15.137-syzkaller-01792-g61cfd264993d #0 [ 20.163856][ T394] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 [ 20.173753][ T394] Call Trace: [ 20.176876][ T394] [ 20.179653][ T394] dump_stack_lvl+0x151/0x1b7 [ 20.184260][ T394] ? io_uring_drop_tctx_refs+0x190/0x190 [ 20.189722][ T394] ? panic+0x751/0x751 [ 20.193627][ T394] print_address_description+0x87/0x3b0 [ 20.199010][ T394] kasan_report+0x179/0x1c0 [ 20.203349][ T394] ? __skb_datagram_iter+0x6f8/0x760 [ 20.208467][ T394] ? __skb_datagram_iter+0x6f8/0x760 [ 20.213587][ T394] __asan_report_load4_noabort+0x14/0x20 [ 20.219150][ T394] __skb_datagram_iter+0x6f8/0x760 [ 20.224092][ T394] ? irqentry_exit_cond_resched+0x2a/0x30 [ 20.229651][ T394] ? irqentry_exit+0x30/0x40 [ 20.234084][ T394] ? sysvec_apic_timer_interrupt+0x55/0xc0 [ 20.239856][ T394] ? skb_copy_datagram_iter+0x170/0x170 [ 20.245234][ T394] ? asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 20.251225][ T394] skb_copy_datagram_iter+0x43/0x170 [ 20.256338][ T394] unix_stream_read_actor+0x70/0xb0 [ 20.261395][ T394] unix_stream_recv_urg+0x1b4/0x2f0 [ 20.266409][ T394] unix_stream_read_generic+0x2147/0x2240 [ 20.271963][ T394] ? avc_denied+0x1b0/0x1b0 [ 20.276302][ T394] ? avc_has_perm+0x16f/0x260 [ 20.280816][ T394] ? avc_has_perm_noaudit+0x430/0x430 [ 20.286022][ T394] ? unix_stream_read_actor+0xb0/0xb0 [ 20.291231][ T394] ? selinux_socket_recvmsg+0x243/0x340 [ 20.296612][ T394] ? selinux_socket_sendmsg+0x340/0x340 [ 20.301994][ T394] unix_stream_recvmsg+0x22d/0x2c0 [ 20.306939][ T394] ? unix_stream_sendmsg+0x1060/0x1060 [ 20.312241][ T394] ? __unix_stream_recvmsg+0x210/0x210 [ 20.317532][ T394] ? security_socket_recvmsg+0x87/0xb0 [ 20.323002][ T394] ? unix_stream_sendmsg+0x1060/0x1060 [ 20.328299][ T394] ____sys_recvmsg+0x286/0x530 [ 20.332914][ T394] ? __sys_recvmsg_sock+0x50/0x50 [ 20.337856][ T394] ? import_iovec+0xe5/0x120 [ 20.342293][ T394] ___sys_recvmsg+0x1ec/0x690 [ 20.346864][ T394] ? __sys_recvmsg+0x260/0x260 [ 20.351393][ T394] ? __fdget+0x1bc/0x240 [ 20.355465][ T394] __x64_sys_recvmsg+0x1dc/0x2b0 [ 20.360239][ T394] ? ___sys_recvmsg+0x690/0x690 [ 20.364924][ T394] ? switch_fpu_return+0x1ed/0x3d0 [ 20.369873][ T394] ? fpregs_assert_state_consistent+0xb6/0xe0 [ 20.375882][ T394] ? exit_to_user_mode_prepare+0x39/0xa0 [ 20.381357][ T394] do_syscall_64+0x3d/0xb0 [ 20.385598][ T394] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 20.391325][ T394] RIP: 0033:0x7f34b71a1559 [ 20.395579][ T394] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 18 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 [ 20.415110][ T394] RSP: 002b:00007f34b7120228 EFLAGS: 00000246 ORIG_RAX: 000000000000002f [ 20.423352][ T394] RAX: ffffffffffffffda RBX: 0000000000000037 RCX: 00007f34b71a1559 [ 20.431165][ T394] RDX: 0000000040010083 RSI: 0000000020000140 RDI: 0000000000000004 [ 20.438974][ T394] RBP: 00007f34b722b348 R08: 00007f34b71206c0 R09: 00007f34b71206c0 [ 20.446786][ T394] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f34b722b340 [ 20.454600][ T394] R13: 00007f34b722b34c R14: 00007ffe9a5944f0 R15: 00007ffe9a5945d8 [ 20.462415][ T394] [ 20.465275][ T394] [ 20.467446][ T394] Allocated by task 393: [ 20.471526][ T394] __kasan_slab_alloc+0xb1/0xe0 [ 20.476211][ T394] slab_post_alloc_hook+0x53/0x2c0 [ 20.481156][ T394] kmem_cache_alloc+0xf5/0x200 [ 20.485757][ T394] __alloc_skb+0xbe/0x550 [ 20.490011][ T394] alloc_skb_with_frags+0xa6/0x680 [ 20.495072][ T394] sock_alloc_send_pskb+0x915/0xa50 [ 20.500107][ T394] sock_alloc_send_skb+0x32/0x40 [ 20.504880][ T394] queue_oob+0xfd/0x8c0 [ 20.508872][ T394] unix_stream_sendmsg+0xe06/0x1060 [ 20.513906][ T394] ____sys_sendmsg+0x59e/0x8f0 [ 20.518506][ T394] ___sys_sendmsg+0x252/0x2e0 [ 20.523024][ T394] __se_sys_sendmsg+0x19a/0x260 [ 20.527707][ T394] __x64_sys_sendmsg+0x7b/0x90 [ 20.532307][ T394] do_syscall_64+0x3d/0xb0 [ 20.536619][ T394] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 20.542298][ T394] [ 20.544457][ T394] Freed by task 393: [ 20.548190][ T394] kasan_set_track+0x4b/0x70 [ 20.552615][ T394] kasan_set_free_info+0x23/0x40 [ 20.557391][ T394] ____kasan_slab_free+0x126/0x160 [ 20.562348][ T394] __kasan_slab_free+0x11/0x20 [ 20.566937][ T394] slab_free_freelist_hook+0xbd/0x190 [ 20.572860][ T394] kmem_cache_free+0x116/0x2e0 [ 20.577455][ T394] kfree_skbmem+0x104/0x170 [ 20.581798][ T394] consume_skb+0xb4/0x250 [ 20.585957][ T394] queue_oob+0x522/0x8c0 [ 20.590037][ T394] unix_stream_sendmsg+0xe06/0x1060 [ 20.595072][ T394] ____sys_sendmsg+0x59e/0x8f0 [ 20.599672][ T394] ___sys_sendmsg+0x252/0x2e0 [ 20.604186][ T394] __se_sys_sendmsg+0x19a/0x260 [ 20.608870][ T394] __x64_sys_sendmsg+0x7b/0x90 [ 20.613469][ T394] do_syscall_64+0x3d/0xb0 [ 20.617723][ T394] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 20.623540][ T394] [ 20.625717][ T394] The buggy address belongs to the object at ffff88811d973c80 [ 20.625717][ T394] which belongs to the cache skbuff_head_cache of size 248 [ 20.640116][ T394] The buggy address is located 112 bytes inside of [ 20.640116][ T394] 248-byte region [ffff88811d973c80, ffff88811d973d78) [ 20.653222][ T394] The buggy address belongs to the page: [ 20.658696][ T394] page:ffffea0004765cc0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11d973 [ 20.668761][ T394] flags: 0x4000000000000200(slab|zone=1) [ 20.674235][ T394] raw: 4000000000000200 0000000000000000 dead000000000122 ffff888100350c00 [ 20.682651][ T394] raw: 0000000000000000 00000000000c000c 00000001ffffffff 0000000000000000 [ 20.691070][ T394] page dumped because: kasan: bad access detected [ 20.697315][ T394] page_owner tracks the page as allocated [ 20.702867][ T394] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x12cc0(GFP_KERNEL|__GFP_NOWARN|__GFP_NORETRY), pid 382, ts 20077788698, free_ts 20017445560 [ 20.718668][ T394] post_alloc_hook+0x1a3/0x1b0 [ 20.723264][ T394] prep_new_page+0x1b/0x110 [ 20.727650][ T394] get_page_from_freelist+0x3550/0x35d0 [ 20.733072][ T394] __alloc_pages+0x206/0x5e0 [ 20.737498][ T394] new_slab+0x9a/0x4e0 [ 20.741407][ T394] ___slab_alloc+0x39e/0x830 [ 20.745847][ T394] __slab_alloc+0x4a/0x90 [ 20.750022][ T394] kmem_cache_alloc+0x134/0x200 [ 20.754683][ T394] __alloc_skb+0xbe/0x550 [ 20.758849][ T394] alloc_skb_with_frags+0xa6/0x680 [ 20.763806][ T394] sock_alloc_send_pskb+0x915/0xa50 [ 20.768832][ T394] sock_alloc_send_skb+0x32/0x40 [ 20.773606][ T394] queue_oob+0xfd/0x8c0 [ 20.777685][ T394] unix_stream_sendmsg+0xe06/0x1060 [ 20.782717][ T394] ____sys_sendmsg+0x59e/0x8f0 [ 20.787322][ T394] ___sys_sendmsg+0x252/0x2e0 [ 20.791864][ T394] page last free stack trace: [ 20.796344][ T394] free_unref_page_prepare+0x7c8/0x7d0 [ 20.801646][ T394] free_unref_page+0xe6/0x730 [ 20.806163][ T394] __free_pages+0x61/0xf0 [ 20.810320][ T394] __vunmap+0x7bc/0x8f0 [ 20.814310][ T394] free_work+0x5b/0x80 [ 20.818220][ T394] process_one_work+0x6bb/0xc10 [ 20.822904][ T394] worker_thread+0xad5/0x12a0 [ 20.827416][ T394] kthread+0x421/0x510 [ 20.831322][ T394] ret_from_fork+0x1f/0x30 [ 20.835578][ T394] [ 20.837748][ T394] Memory state around the buggy address: [ 20.843220][ T394] ffff88811d973b80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 20.851115][ T394] ffff88811d973c00: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc [ 20.859020][ T394] >ffff88811d973c80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 20.866908][ T394] ^ executing program executing program executing program executing program executing program [ 20.874476][ T394] ffff88811d973d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc [ 20.882371][ T394] ffff88811d973d80: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb [ 20.890259][ T394] ================================================================== [ 20.898154][ T394] Disabling lock debugging due to kernel taint executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program