./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor971804635 <...> rocess permissive=1 [ 10.647396][ T24] audit: type=1400 audit(1754554363.680:63): avc: denied { siginh } for pid=214 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 Warning: Permanently added '10.128.0.181' (ED25519) to the list of known hosts. execve("./syz-executor971804635", ["./syz-executor971804635"], 0x7ffc69abbca0 /* 10 vars */) = 0 brk(NULL) = 0x555566a9b000 brk(0x555566a9bd00) = 0x555566a9bd00 arch_prctl(ARCH_SET_FS, 0x555566a9b380) = 0 set_tid_address(0x555566a9b650) = 282 set_robust_list(0x555566a9b660, 24) = 0 rseq(0x555566a9bca0, 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-executor971804635", 4096) = 27 getrandom("\x95\xeb\x6d\x24\xc6\x8a\x4a\x91", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555566a9bd00 brk(0x555566abcd00) = 0x555566abcd00 brk(0x555566abd000) = 0x555566abd000 mprotect(0x7faa8513f000, 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, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xfe\x80\x00\x00\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\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=MSG_EOR}, MSG_NOSIGNAL) = 184 [ 19.397928][ T24] audit: type=1400 audit(1754554372.440:64): avc: denied { execmem } for pid=282 comm="syz-executor971" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 19.403873][ T24] audit: type=1400 audit(1754554372.460:65): avc: denied { create } for pid=282 comm="syz-executor971" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=key_socket permissive=1 [ 19.407801][ T24] audit: type=1400 audit(1754554372.460:66): avc: denied { setopt } for pid=282 comm="syz-executor971" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=key_socket permissive=1 [ 19.411000][ T282] ================================================================== [ 19.412015][ T24] audit: type=1400 audit(1754554372.460:67): avc: denied { write } for pid=282 comm="syz-executor971" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=key_socket permissive=1 [ 19.413084][ T282] BUG: KASAN: slab-out-of-bounds in xfrm_policy_inexact_list_reinsert+0x620/0x6d0 [ 19.416035][ T24] audit: type=1400 audit(1754554372.460:68): avc: denied { create } for pid=282 comm="syz-executor971" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_xfrm_socket permissive=1 [ 19.417485][ T282] Read of size 1 at addr ffff88812135d3d8 by task syz-executor971/282 [ 19.433574][ T24] audit: type=1400 audit(1754554372.460:69): avc: denied { write } for pid=282 comm="syz-executor971" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_xfrm_socket permissive=1 [ 19.441448][ T282] [ 19.441471][ T282] CPU: 0 PID: 282 Comm: syz-executor971 Not tainted 5.10.240-syzkaller-00225-g1154f779f3f3 #0 [ 19.441476][ T282] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 19.441489][ T282] Call Trace: [ 19.461906][ T24] audit: type=1400 audit(1754554372.460:70): avc: denied { nlmsg_write } for pid=282 comm="syz-executor971" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_xfrm_socket permissive=1 [ 19.464023][ T282] __dump_stack+0x21/0x24 [ 19.512621][ T282] dump_stack_lvl+0x169/0x1d8 [ 19.517267][ T282] ? show_regs_print_info+0x18/0x18 [ 19.522450][ T282] ? thaw_kernel_threads+0x220/0x220 [ 19.527707][ T282] ? unwind_get_return_address+0x4d/0x90 [ 19.533309][ T282] print_address_description+0x7f/0x2c0 [ 19.538826][ T282] ? xfrm_policy_inexact_list_reinsert+0x620/0x6d0 [ 19.545295][ T282] kasan_report+0xe2/0x130 [ 19.549680][ T282] ? xfrm_policy_inexact_list_reinsert+0x620/0x6d0 [ 19.556152][ T282] __asan_report_load1_noabort+0x14/0x20 [ 19.561761][ T282] xfrm_policy_inexact_list_reinsert+0x620/0x6d0 [ 19.568065][ T282] xfrm_policy_inexact_insert_node+0x938/0xb50 [ 19.574188][ T282] ? xfrm_netlink_rcv+0x72/0x90 [ 19.579009][ T282] ? netlink_unicast+0x876/0xa40 [ 19.583913][ T282] ? netlink_sendmsg+0x88d/0xb30 [ 19.588820][ T282] ? ____sys_sendmsg+0x5a2/0x8c0 [ 19.593724][ T282] ? ___sys_sendmsg+0x1f0/0x260 [ 19.598544][ T282] ? do_syscall_64+0x31/0x40 [ 19.603107][ T282] xfrm_policy_inexact_alloc_chain+0x53a/0xb30 [ 19.609230][ T282] xfrm_policy_inexact_insert+0x70/0x1130 [ 19.614917][ T282] ? __get_hash_thresh+0x10c/0x420 [ 19.619998][ T282] ? policy_hash_bysel+0x110/0x4f0 [ 19.625116][ T282] xfrm_policy_insert+0x126/0x9a0 [ 19.630112][ T282] ? xfrm_policy_construct+0x54f/0x1f00 [ 19.635625][ T282] xfrm_add_policy+0x4d1/0x830 [ 19.640354][ T282] ? xfrm_dump_sa_done+0xc0/0xc0 [ 19.645262][ T282] xfrm_user_rcv_msg+0x450/0x6d0 [ 19.650166][ T282] ? xfrm_netlink_rcv+0x90/0x90 [ 19.654989][ T282] ? selinux_nlmsg_lookup+0x219/0x4a0 [ 19.660332][ T282] netlink_rcv_skb+0x1e0/0x430 [ 19.665063][ T282] ? xfrm_netlink_rcv+0x90/0x90 [ 19.669882][ T282] ? netlink_ack+0xb80/0xb80 [ 19.674441][ T282] ? mutex_trylock+0xa0/0xa0 [ 19.679000][ T282] ? __netlink_lookup+0x387/0x3b0 [ 19.683994][ T282] xfrm_netlink_rcv+0x72/0x90 [ 19.688681][ T282] netlink_unicast+0x876/0xa40 [ 19.693413][ T282] netlink_sendmsg+0x88d/0xb30 [ 19.698145][ T282] ? netlink_getsockopt+0x530/0x530 [ 19.703313][ T282] ? copy_fpregs_to_fpstate+0x14a/0x1b0 [ 19.708829][ T282] ? security_socket_sendmsg+0x82/0xa0 [ 19.714256][ T282] ? netlink_getsockopt+0x530/0x530 [ 19.719438][ T282] ____sys_sendmsg+0x5a2/0x8c0 [ 19.724182][ T282] ? __sys_sendmsg_sock+0x40/0x40 [ 19.729272][ T282] ? import_iovec+0x7c/0xb0 [ 19.733748][ T282] ___sys_sendmsg+0x1f0/0x260 [ 19.738397][ T282] ? __switch_to_asm+0x34/0x60 [ 19.743140][ T282] ? __sys_sendmsg+0x250/0x250 [ 19.747875][ T282] ? __kasan_check_read+0x11/0x20 [ 19.752867][ T282] ? __fdget+0x15b/0x230 [ 19.757078][ T282] __x64_sys_sendmsg+0x1e2/0x2a0 [ 19.761990][ T282] ? do_notify_parent+0x7e0/0x7e0 [ 19.766984][ T282] ? ___sys_sendmsg+0x260/0x260 [ 19.771803][ T282] ? syscall_trace_enter+0x4b/0x170 [ 19.776966][ T282] do_syscall_64+0x31/0x40 [ 19.781354][ T282] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 19.787214][ T282] RIP: 0033:0x7faa850cc869 [ 19.791597][ T282] 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 [ 19.811173][ T282] RSP: 002b:00007ffeabf22328 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 19.819554][ T282] RAX: ffffffffffffffda RBX: 0000200000000000 RCX: 00007faa850cc869 [ 19.827496][ T282] RDX: 0000000000000000 RSI: 0000200000000580 RDI: 0000000000000005 [ 19.835436][ T282] RBP: 0000200000000180 R08: 0000000000000000 R09: 0000000000000000 [ 19.843385][ T282] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000580 [ 19.851324][ T282] R13: 0000200000000590 R14: 0000000000000001 R15: 0000200000000588 [ 19.859268][ T282] [ 19.861566][ T282] Allocated by task 282: [ 19.865781][ T282] __kasan_kmalloc+0xda/0x110 [ 19.870426][ T282] __kmalloc+0x1a7/0x330 [ 19.874634][ T282] sk_prot_alloc+0xb2/0x340 [ 19.879100][ T282] sk_alloc+0x38/0x4e0 [ 19.883135][ T282] pfkey_create+0x12a/0x660 [ 19.887609][ T282] __sock_create+0x38d/0x770 [ 19.892165][ T282] __sys_socket+0xec/0x190 [ 19.896546][ T282] __x64_sys_socket+0x7a/0x90 [ 19.901192][ T282] do_syscall_64+0x31/0x40 [ 19.905577][ T282] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 19.911433][ T282] [ 19.913731][ T282] The buggy address belongs to the object at ffff88812135d000 [ 19.913731][ T282] which belongs to the cache kmalloc-1k of size 1024 [ 19.927750][ T282] The buggy address is located 984 bytes inside of [ 19.927750][ T282] 1024-byte region [ffff88812135d000, ffff88812135d400) [ 19.941074][ T282] The buggy address belongs to the page: [ 19.946690][ T282] page:ffffea000484d600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x121358 [ 19.956887][ T282] head:ffffea000484d600 order:3 compound_mapcount:0 compound_pincount:0 [ 19.965196][ T282] flags: 0x4000000000010200(slab|head) [ 19.970633][ T282] raw: 4000000000010200 dead000000000100 dead000000000122 ffff888100042f00 [ 19.979362][ T282] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 [ 19.987914][ T282] page dumped because: kasan: bad access detected [ 19.994302][ T282] page_owner tracks the page as allocated [ 19.999994][ T282] page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 278, ts 19402935498, free_ts 0 [ 20.018109][ T282] prep_new_page+0x179/0x180 [ 20.022678][ T282] get_page_from_freelist+0x2235/0x23d0 [ 20.028194][ T282] __alloc_pages_nodemask+0x268/0x5f0 [ 20.033530][ T282] new_slab+0x84/0x3f0 [ 20.037564][ T282] ___slab_alloc+0x2a6/0x450 [ 20.042123][ T282] __slab_alloc+0x63/0xa0 [ 20.046418][ T282] __kmalloc_track_caller+0x1ef/0x320 [ 20.051754][ T282] __alloc_skb+0xdc/0x520 [ 20.056052][ T282] sk_stream_alloc_skb+0x21a/0xb70 [ 20.061128][ T282] tcp_sendmsg_locked+0xc43/0x3750 [ 20.066203][ T282] tcp_sendmsg+0x2f/0x50 [ 20.070410][ T282] inet_sendmsg+0xa5/0xc0 [ 20.074708][ T282] sock_write_iter+0x29c/0x380 [ 20.079446][ T282] vfs_write+0x725/0xd60 [ 20.083664][ T282] ksys_write+0x140/0x240 [ 20.087960][ T282] __x64_sys_write+0x7b/0x90 [ 20.092512][ T282] page_owner free stack trace missing [ 20.097851][ T282] [ 20.100145][ T282] Memory state around the buggy address: [ 20.105744][ T282] ffff88812135d280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 20.113770][ T282] ffff88812135d300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 20.121801][ T282] >ffff88812135d380: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc [ 20.129833][ T282] ^ [ 20.136734][ T282] ffff88812135d400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc 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\x20\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\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 exit_group(0) = ? +++ exited with 0 +++ [ 20.144778][ T282] ffff88812135d480: fc fc fc fc fc fc fc fc fc fc fc