./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3344422612 <...> syzkaller syzkaller login: [ 13.871156][ T30] kauditd_printk_skb: 48 callbacks suppressed [ 13.871170][ T30] audit: type=1400 audit(1754869799.062:59): 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 [ 13.877300][ T30] audit: type=1400 audit(1754869799.062:60): 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 [ 13.881140][ T30] audit: type=1400 audit(1754869799.062:61): avc: denied { write } for pid=223 comm="sh" path="pipe:[14482]" dev="pipefs" ino=14482 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 [ 13.886758][ T30] audit: type=1400 audit(1754869799.062:62): 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 [ 13.890299][ T30] audit: type=1400 audit(1754869799.062:63): 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 '10.128.1.172' (ED25519) to the list of known hosts. execve("./syz-executor3344422612", ["./syz-executor3344422612"], 0x7ffc81be9810 /* 10 vars */) = 0 brk(NULL) = 0x555594bed000 brk(0x555594bedd00) = 0x555594bedd00 arch_prctl(ARCH_SET_FS, 0x555594bed380) = 0 set_tid_address(0x555594bed650) = 288 set_robust_list(0x555594bed660, 24) = 0 rseq(0x555594bedca0, 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-executor3344422612", 4096) = 28 getrandom("\xcd\x07\xd1\x86\x0d\x86\x89\xee", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555594bedd00 brk(0x555594c0ed00) = 0x555594c0ed00 brk(0x555594c0f000) = 0x555594c0f000 mprotect(0x7fd68012d000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 write(1, "executing program\n", 18executing program ) = 18 socket(AF_INET6, SOCK_DGRAM, IPPROTO_IP) = 3 setsockopt(3, SOL_IPV6, IPV6_XFRM_POLICY, "\xac\x14\x14\xbb\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xff\xff\xff\xff\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x0a\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"..., 232) = 0 socket(AF_KEY, SOCK_RAW, 2) = 4 setsockopt(4, SOL_SOCKET, SO_RCVBUF, [0], 4) = 0 sendmsg(4, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x02\x0b\x00\x01\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", iov_len=16}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 16 sendmsg(4, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x02\x12\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", iov_len=16}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 16 socket(AF_NETLINK, SOCK_RAW, NETLINK_XFRM) = 5 socket(AF_NETLINK, SOCK_RAW, NETLINK_XFRM) = 6 sendmsg(6, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\xb8\x00\x00\x00\x13\x00\xe9\x99\x00\x00\x00\x00\x00\x00\x00\x00\xfc\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\xac\x1e\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x0a\x00\x60\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"..., iov_len=184}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 184 socket(AF_NETLINK, SOCK_RAW, NETLINK_XFRM) = 7 sendmsg(7, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\xb8\x00\x00\x00\x13\x00\xe9\x99\x00\x00\x00\x00\x00\x00\x00\x00\xfc\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xac\x1e\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x0a\x00\x60\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xee\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"..., iov_len=184}], msg_iovlen=1, msg_controllen=0, msg_flags=MSG_EOR}, 0) = 184 [ 22.858862][ T30] audit: type=1400 audit(1754869808.042:64): avc: denied { execmem } for pid=288 comm="syz-executor334" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 22.877750][ T288] ================================================================== [ 22.878306][ T30] audit: type=1400 audit(1754869808.062:65): avc: denied { create } for pid=288 comm="syz-executor334" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=key_socket permissive=1 [ 22.886287][ T288] BUG: KASAN: slab-out-of-bounds in xfrm_policy_inexact_list_reinsert+0x620/0x6d0 [ 22.886327][ T288] Read of size 1 at addr ffff88810698bbf8 by task syz-executor334/288 [ 22.905857][ T30] audit: type=1400 audit(1754869808.062:66): avc: denied { setopt } for pid=288 comm="syz-executor334" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=key_socket permissive=1 [ 22.914989][ T288] [ 22.915004][ T288] CPU: 0 PID: 288 Comm: syz-executor334 Not tainted 5.15.189-syzkaller-android13-5.15.189_r00 #0 [ 22.923150][ T30] audit: type=1400 audit(1754869808.062:67): avc: denied { write } for pid=288 comm="syz-executor334" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=key_socket permissive=1 [ 22.942618][ T288] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 22.942642][ T288] Call Trace: [ 22.942648][ T288] [ 22.942654][ T288] __dump_stack+0x21/0x30 [ 22.942675][ T288] dump_stack_lvl+0xee/0x150 [ 22.945452][ T30] audit: type=1400 audit(1754869808.062:68): avc: denied { create } for pid=288 comm="syz-executor334" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_xfrm_socket permissive=1 [ 22.955445][ T288] ? show_regs_print_info+0x20/0x20 [ 22.955466][ T288] ? load_image+0x3a0/0x3a0 [ 22.974908][ T30] audit: type=1400 audit(1754869808.062:69): avc: denied { write } for pid=288 comm="syz-executor334" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_xfrm_socket permissive=1 [ 22.984913][ T288] ? unwind_get_return_address+0x4d/0x90 [ 22.988199][ T30] audit: type=1400 audit(1754869808.062:70): avc: denied { nlmsg_write } for pid=288 comm="syz-executor334" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_xfrm_socket permissive=1 [ 22.991100][ T288] print_address_description+0x7f/0x2c0 [ 22.991119][ T288] ? xfrm_policy_inexact_list_reinsert+0x620/0x6d0 [ 23.089520][ T288] kasan_report+0xf1/0x140 [ 23.093915][ T288] ? xfrm_policy_inexact_list_reinsert+0x620/0x6d0 [ 23.100391][ T288] __asan_report_load1_noabort+0x14/0x20 [ 23.105996][ T288] xfrm_policy_inexact_list_reinsert+0x620/0x6d0 [ 23.112296][ T288] xfrm_policy_inexact_insert_node+0x938/0xb50 [ 23.118420][ T288] ? xfrm_netlink_rcv+0x72/0x90 [ 23.123243][ T288] ? netlink_unicast+0x876/0xa40 [ 23.128156][ T288] ? netlink_sendmsg+0x86a/0xb70 [ 23.133089][ T288] ? ____sys_sendmsg+0x5a2/0x8c0 [ 23.138014][ T288] ? ___sys_sendmsg+0x1f0/0x260 [ 23.142836][ T288] ? x64_sys_call+0x4b/0x9a0 [ 23.147399][ T288] ? entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 23.154830][ T288] xfrm_policy_inexact_alloc_chain+0x53a/0xb30 [ 23.160955][ T288] xfrm_policy_inexact_insert+0x70/0x1130 [ 23.166647][ T288] ? __get_hash_thresh+0x10c/0x420 [ 23.171743][ T288] ? policy_hash_bysel+0x110/0x4f0 [ 23.176942][ T288] xfrm_policy_insert+0x126/0x9a0 [ 23.181959][ T288] ? xfrm_policy_construct+0x54f/0x1f00 [ 23.187507][ T288] xfrm_add_policy+0x4d1/0x830 [ 23.192259][ T288] ? xfrm_dump_sa_done+0xc0/0xc0 [ 23.197172][ T288] xfrm_user_rcv_msg+0x45c/0x6e0 [ 23.202085][ T288] ? xfrm_netlink_rcv+0x90/0x90 [ 23.206910][ T288] ? avc_has_perm_noaudit+0x460/0x460 [ 23.212257][ T288] ? x64_sys_call+0x4b/0x9a0 [ 23.216818][ T288] ? selinux_nlmsg_lookup+0x237/0x4c0 [ 23.222249][ T288] netlink_rcv_skb+0x1e0/0x430 [ 23.226985][ T288] ? xfrm_netlink_rcv+0x90/0x90 [ 23.231823][ T288] ? netlink_ack+0xb60/0xb60 [ 23.236402][ T288] ? wait_for_completion_killable_timeout+0x10/0x10 [ 23.242969][ T288] ? __netlink_lookup+0x387/0x3b0 [ 23.247966][ T288] xfrm_netlink_rcv+0x72/0x90 [ 23.252633][ T288] netlink_unicast+0x876/0xa40 [ 23.257393][ T288] netlink_sendmsg+0x86a/0xb70 [ 23.262125][ T288] ? netlink_getsockopt+0x530/0x530 [ 23.267294][ T288] ? __update_load_avg_cfs_rq+0xaf/0x2f0 [ 23.272902][ T288] ? security_socket_sendmsg+0x82/0xa0 [ 23.278335][ T288] ? netlink_getsockopt+0x530/0x530 [ 23.283516][ T288] ____sys_sendmsg+0x5a2/0x8c0 [ 23.288255][ T288] ? __sys_sendmsg_sock+0x40/0x40 [ 23.293251][ T288] ? import_iovec+0x7c/0xb0 [ 23.297741][ T288] ___sys_sendmsg+0x1f0/0x260 [ 23.302388][ T288] ? _raw_spin_unlock+0x4d/0x70 [ 23.307219][ T288] ? __sys_sendmsg+0x250/0x250 [ 23.311951][ T288] ? __schedule+0xb76/0x14c0 [ 23.316515][ T288] ? _raw_spin_lock_irqsave+0x110/0x110 [ 23.322036][ T288] ? cgroup_update_frozen+0x15c/0x970 [ 23.327389][ T288] ? ptrace_stop+0x6f4/0xa80 [ 23.331952][ T288] ? __kasan_check_read+0x11/0x20 [ 23.336949][ T288] ? __fdget+0x15b/0x230 [ 23.341162][ T288] __x64_sys_sendmsg+0x1e2/0x2a0 [ 23.346158][ T288] ? ___sys_sendmsg+0x260/0x260 [ 23.350982][ T288] ? __kasan_check_write+0x14/0x20 [ 23.356071][ T288] ? switch_fpu_return+0x15d/0x2c0 [ 23.361157][ T288] x64_sys_call+0x4b/0x9a0 [ 23.365546][ T288] do_syscall_64+0x4c/0xa0 [ 23.369941][ T288] ? clear_bhb_loop+0x50/0xa0 [ 23.374617][ T288] ? clear_bhb_loop+0x50/0xa0 [ 23.379291][ T288] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 23.385190][ T288] RIP: 0033:0x7fd6800b9ae9 [ 23.389599][ T288] 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 [ 23.409269][ T288] RSP: 002b:00007ffdea311358 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 23.417680][ T288] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd6800b9ae9 [ 23.425641][ T288] RDX: 0000000000004000 RSI: 0000200000000580 RDI: 0000000000000005 [ 23.433692][ T288] RBP: 0000200000000580 R08: 0000200000000017 R09: 0000000000000000 [ 23.441638][ T288] R10: 0000200000000012 R11: 0000000000000246 R12: 0000000000000000 [ 23.449582][ T288] R13: 0000000000000000 R14: 0000000000000000 R15: 000000000000000a [ 23.457526][ T288] [ 23.460532][ T288] [ 23.462830][ T288] Allocated by task 288: [ 23.467036][ T288] __kasan_kmalloc+0xda/0x110 [ 23.471687][ T288] __kmalloc+0x13d/0x2c0 [ 23.475932][ T288] sk_prot_alloc+0xed/0x320 [ 23.480440][ T288] sk_alloc+0x38/0x430 [ 23.484492][ T288] pfkey_create+0x12a/0x660 [ 23.488966][ T288] __sock_create+0x38d/0x7a0 [ 23.493525][ T288] __sys_socket+0xec/0x190 [ 23.497925][ T288] __x64_sys_socket+0x7a/0x90 [ 23.502670][ T288] x64_sys_call+0x8c5/0x9a0 [ 23.507151][ T288] do_syscall_64+0x4c/0xa0 [ 23.511540][ T288] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 23.517404][ T288] [ 23.519717][ T288] The buggy address belongs to the object at ffff88810698b800 [ 23.519717][ T288] which belongs to the cache kmalloc-1k of size 1024 [ 23.533741][ T288] The buggy address is located 1016 bytes inside of [ 23.533741][ T288] 1024-byte region [ffff88810698b800, ffff88810698bc00) [ 23.547160][ T288] The buggy address belongs to the page: [ 23.552777][ T288] page:ffffea00041a6200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106988 [ 23.562988][ T288] head:ffffea00041a6200 order:3 compound_mapcount:0 compound_pincount:0 [ 23.571296][ T288] flags: 0x4000000000010200(slab|head|zone=1) [ 23.577382][ T288] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100043080 [ 23.585952][ T288] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 [ 23.594500][ T288] page dumped because: kasan: bad access detected [ 23.600882][ T288] page_owner tracks the page as allocated [ 23.606574][ T288] page last allocated via order 3, migratetype Unmovable, gfp_mask 0x52a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 288, ts 22872320416, free_ts 22853057188 [ 23.623555][ T288] post_alloc_hook+0x192/0x1b0 [ 23.628306][ T288] prep_new_page+0x1c/0x110 [ 23.632785][ T288] get_page_from_freelist+0x2cc5/0x2d50 [ 23.638314][ T288] __alloc_pages+0x18f/0x440 [ 23.642872][ T288] new_slab+0xa1/0x4d0 [ 23.646924][ T288] ___slab_alloc+0x381/0x810 [ 23.651510][ T288] __slab_alloc+0x49/0x90 [ 23.655810][ T288] kmem_cache_alloc_trace+0x146/0x270 [ 23.661151][ T288] xfrm_policy_alloc+0x79/0x280 [ 23.665979][ T288] xfrm_compile_policy+0x74e/0xc70 [ 23.671079][ T288] xfrm_user_policy+0x29f/0x510 [ 23.675902][ T288] ipv6_setsockopt+0x10bc/0x38a0 [ 23.680812][ T288] udpv6_setsockopt+0x92/0xb0 [ 23.685491][ T288] sock_common_setsockopt+0xa0/0xb0 [ 23.690658][ T288] __sys_setsockopt+0x2f0/0x460 [ 23.695573][ T288] __x64_sys_setsockopt+0xbf/0xd0 [ 23.700570][ T288] page last free stack trace: [ 23.705214][ T288] free_unref_page_prepare+0x542/0x550 [ 23.710647][ T288] free_unref_page+0xa2/0x550 [ 23.715292][ T288] __free_pages+0x6c/0x100 [ 23.719764][ T288] __free_slab+0xe8/0x1e0 [ 23.724066][ T288] __unfreeze_partials+0x160/0x190 [ 23.729150][ T288] put_cpu_partial+0xc6/0x120 [ 23.733806][ T288] __slab_free+0x1d4/0x290 [ 23.738197][ T288] ___cache_free+0x104/0x120 [ 23.742760][ T288] qlink_free+0x4d/0x90 [ 23.746885][ T288] qlist_free_all+0x5f/0xb0 [ 23.751357][ T288] kasan_quarantine_reduce+0x14a/0x170 [ 23.756789][ T288] __kasan_slab_alloc+0x2f/0xf0 [ 23.761608][ T288] slab_post_alloc_hook+0x4f/0x2b0 [ 23.766690][ T288] kmem_cache_alloc+0xf7/0x260 [ 23.771421][ T288] __alloc_skb+0xe0/0x740 [ 23.775723][ T288] sk_stream_alloc_skb+0x21a/0xb60 [ 23.780807][ T288] [ 23.783101][ T288] Memory state around the buggy address: [ 23.788708][ T288] ffff88810698ba80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 23.797350][ T288] ffff88810698bb00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 sendmsg(5, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\xb8\x00\x00\x00\x13\x00\xe9\x99\x00\x00\x00\x00\x00\x00\x00\x00\xfc\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xac\x1e\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x0a\x00\x40\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\xee\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x09\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=184}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, MSG_NOSIGNAL) = 184 exit_group(0) = ? +++ exited with 0 +++ [ 23.805452][ T288] >ffff88810698bb80: 00 00 00 00 00 00 00 00 00 00 00 00 fc fc fc f