./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3239645366 <...> syzkaller syzkaller login: [ 13.734284][ T30] kauditd_printk_skb: 31 callbacks suppressed [ 13.734299][ T30] audit: type=1400 audit(1754872895.799:59): 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 [ 13.745025][ T30] audit: type=1400 audit(1754872895.799:60): 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 [ 13.752219][ T30] audit: type=1400 audit(1754872895.799:61): avc: denied { write } for pid=223 comm="sh" path="pipe:[14871]" dev="pipefs" ino=14871 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 [ 13.770591][ T30] audit: type=1400 audit(1754872895.799:62): 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 [ 13.789251][ T30] audit: type=1400 audit(1754872895.799:63): 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 '10.128.1.64' (ED25519) to the list of known hosts. execve("./syz-executor3239645366", ["./syz-executor3239645366"], 0x7ffefcba2250 /* 10 vars */) = 0 brk(NULL) = 0x555589deb000 brk(0x555589debd00) = 0x555589debd00 arch_prctl(ARCH_SET_FS, 0x555589deb380) = 0 set_tid_address(0x555589deb650) = 288 set_robust_list(0x555589deb660, 24) = 0 rseq(0x555589debca0, 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-executor3239645366", 4096) = 28 getrandom("\x7c\x67\xee\xdd\x39\xa4\x88\xc1", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555589debd00 brk(0x555589e0cd00) = 0x555589e0cd00 brk(0x555589e0d000) = 0x555589e0d000 mprotect(0x7f242f1cc000, 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, 0executing program ) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 write(1, "executing program\n", 18) = 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 [ 29.821312][ T30] audit: type=1400 audit(1754872911.889:64): avc: denied { execmem } for pid=288 comm="syz-executor323" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 29.842976][ T30] audit: type=1400 audit(1754872911.909:65): avc: denied { create } for pid=288 comm="syz-executor323" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=key_socket permissive=1 [ 29.848911][ T288] ================================================================== [ 29.862619][ T30] audit: type=1400 audit(1754872911.909:66): avc: denied { setopt } for pid=288 comm="syz-executor323" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=key_socket permissive=1 [ 29.870797][ T288] BUG: KASAN: slab-out-of-bounds in xfrm_policy_inexact_list_reinsert+0x620/0x6d0 [ 29.890904][ T30] audit: type=1400 audit(1754872911.909:67): avc: denied { write } for pid=288 comm="syz-executor323" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=key_socket permissive=1 [ 29.899820][ T288] Read of size 1 at addr ffff88811b84e3f8 by task syz-executor323/288 [ 29.899839][ T288] [ 29.899853][ T288] CPU: 0 PID: 288 Comm: syz-executor323 Not tainted 5.15.189-syzkaller-android13-5.15.189_r00 #0 [ 29.919710][ T30] audit: type=1400 audit(1754872911.909:68): avc: denied { create } for pid=288 comm="syz-executor323" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_xfrm_socket permissive=1 [ 29.927638][ T288] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 29.927663][ T288] Call Trace: [ 29.927669][ T288] [ 29.927676][ T288] __dump_stack+0x21/0x30 [ 29.930159][ T30] audit: type=1400 audit(1754872911.909:69): avc: denied { write } for pid=288 comm="syz-executor323" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_xfrm_socket permissive=1 [ 29.940479][ T288] dump_stack_lvl+0xee/0x150 [ 29.940501][ T288] ? show_regs_print_info+0x20/0x20 [ 29.961479][ T30] audit: type=1400 audit(1754872911.909:70): avc: denied { nlmsg_write } for pid=288 comm="syz-executor323" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=netlink_xfrm_socket permissive=1 [ 29.970941][ T288] ? load_image+0x3a0/0x3a0 [ 30.037289][ T288] ? unwind_get_return_address+0x4d/0x90 [ 30.043006][ T288] print_address_description+0x7f/0x2c0 [ 30.048543][ T288] ? xfrm_policy_inexact_list_reinsert+0x620/0x6d0 [ 30.055036][ T288] kasan_report+0xf1/0x140 [ 30.059448][ T288] ? xfrm_policy_inexact_list_reinsert+0x620/0x6d0 [ 30.065941][ T288] __asan_report_load1_noabort+0x14/0x20 [ 30.071613][ T288] xfrm_policy_inexact_list_reinsert+0x620/0x6d0 [ 30.077949][ T288] xfrm_policy_inexact_insert_node+0x938/0xb50 [ 30.084099][ T288] ? xfrm_netlink_rcv+0x72/0x90 [ 30.088944][ T288] ? netlink_unicast+0x876/0xa40 [ 30.093878][ T288] ? netlink_sendmsg+0x86a/0xb70 [ 30.098813][ T288] ? ____sys_sendmsg+0x5a2/0x8c0 [ 30.103747][ T288] ? ___sys_sendmsg+0x1f0/0x260 [ 30.108591][ T288] ? x64_sys_call+0x4b/0x9a0 [ 30.113262][ T288] ? entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 30.119329][ T288] xfrm_policy_inexact_alloc_chain+0x53a/0xb30 [ 30.125478][ T288] xfrm_policy_inexact_insert+0x70/0x1130 [ 30.131191][ T288] ? __get_hash_thresh+0x10c/0x420 [ 30.136297][ T288] ? policy_hash_bysel+0x110/0x4f0 [ 30.141405][ T288] xfrm_policy_insert+0x126/0x9a0 [ 30.146441][ T288] ? xfrm_policy_construct+0x54f/0x1f00 [ 30.151983][ T288] xfrm_add_policy+0x4d1/0x830 [ 30.156832][ T288] ? xfrm_dump_sa_done+0xc0/0xc0 [ 30.161773][ T288] xfrm_user_rcv_msg+0x45c/0x6e0 [ 30.166720][ T288] ? xfrm_netlink_rcv+0x90/0x90 [ 30.171584][ T288] ? avc_has_perm_noaudit+0x460/0x460 [ 30.176957][ T288] ? x64_sys_call+0x4b/0x9a0 [ 30.181572][ T288] ? selinux_nlmsg_lookup+0x237/0x4c0 [ 30.186945][ T288] netlink_rcv_skb+0x1e0/0x430 [ 30.191705][ T288] ? xfrm_netlink_rcv+0x90/0x90 [ 30.196578][ T288] ? netlink_ack+0xb60/0xb60 [ 30.201164][ T288] ? wait_for_completion_killable_timeout+0x10/0x10 [ 30.207750][ T288] ? __netlink_lookup+0x387/0x3b0 [ 30.212790][ T288] xfrm_netlink_rcv+0x72/0x90 [ 30.217463][ T288] netlink_unicast+0x876/0xa40 [ 30.222310][ T288] netlink_sendmsg+0x86a/0xb70 [ 30.227066][ T288] ? netlink_getsockopt+0x530/0x530 [ 30.232362][ T288] ? __update_load_avg_cfs_rq+0xaf/0x2f0 [ 30.237995][ T288] ? security_socket_sendmsg+0x82/0xa0 [ 30.243541][ T288] ? netlink_getsockopt+0x530/0x530 [ 30.248736][ T288] ____sys_sendmsg+0x5a2/0x8c0 [ 30.253496][ T288] ? __sys_sendmsg_sock+0x40/0x40 [ 30.258516][ T288] ? import_iovec+0x7c/0xb0 [ 30.263020][ T288] ___sys_sendmsg+0x1f0/0x260 [ 30.267688][ T288] ? _raw_spin_unlock+0x4d/0x70 [ 30.272538][ T288] ? __sys_sendmsg+0x250/0x250 [ 30.277298][ T288] ? __schedule+0xb76/0x14c0 [ 30.281887][ T288] ? _raw_spin_lock_irqsave+0x110/0x110 [ 30.287426][ T288] ? cgroup_update_frozen+0x15c/0x970 [ 30.292796][ T288] ? ptrace_stop+0x6f4/0xa80 [ 30.297471][ T288] ? __kasan_check_read+0x11/0x20 [ 30.302508][ T288] ? __fdget+0x15b/0x230 [ 30.306750][ T288] __x64_sys_sendmsg+0x1e2/0x2a0 [ 30.311822][ T288] ? ___sys_sendmsg+0x260/0x260 [ 30.316669][ T288] ? __kasan_check_write+0x14/0x20 [ 30.321801][ T288] ? switch_fpu_return+0x15d/0x2c0 [ 30.326912][ T288] x64_sys_call+0x4b/0x9a0 [ 30.331325][ T288] do_syscall_64+0x4c/0xa0 [ 30.335740][ T288] ? clear_bhb_loop+0x50/0xa0 [ 30.340413][ T288] ? clear_bhb_loop+0x50/0xa0 [ 30.345084][ T288] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 30.350972][ T288] RIP: 0033:0x7f242f158ae9 [ 30.355386][ 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 [ 30.374991][ T288] RSP: 002b:00007fff18d1ef08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 30.383398][ T288] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f242f158ae9 [ 30.391367][ T288] RDX: 0000000000004000 RSI: 0000200000000580 RDI: 0000000000000005 [ 30.399337][ T288] RBP: 0000200000000580 R08: 0000200000000017 R09: 0000000000000000 [ 30.407320][ T288] R10: 0000200000000012 R11: 0000000000000246 R12: 0000000000000000 [ 30.415289][ T288] R13: 0000000000000000 R14: 0000000000000000 R15: 000000000000000a [ 30.423275][ T288] [ 30.426400][ T288] [ 30.428725][ T288] Allocated by task 288: [ 30.432955][ T288] __kasan_kmalloc+0xda/0x110 [ 30.437635][ T288] __kmalloc+0x13d/0x2c0 [ 30.441884][ T288] sk_prot_alloc+0xed/0x320 [ 30.446388][ T288] sk_alloc+0x38/0x430 [ 30.450577][ T288] pfkey_create+0x12a/0x660 [ 30.455081][ T288] __sock_create+0x38d/0x7a0 [ 30.459686][ T288] __sys_socket+0xec/0x190 [ 30.464266][ T288] __x64_sys_socket+0x7a/0x90 [ 30.468969][ T288] x64_sys_call+0x8c5/0x9a0 [ 30.473470][ T288] do_syscall_64+0x4c/0xa0 [ 30.477887][ T288] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 30.483782][ T288] [ 30.486122][ T288] The buggy address belongs to the object at ffff88811b84e000 [ 30.486122][ T288] which belongs to the cache kmalloc-1k of size 1024 [ 30.500362][ T288] The buggy address is located 1016 bytes inside of [ 30.500362][ T288] 1024-byte region [ffff88811b84e000, ffff88811b84e400) [ 30.513809][ T288] The buggy address belongs to the page: [ 30.519449][ T288] page:ffffea00046e1200 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11b848 [ 30.529869][ T288] head:ffffea00046e1200 order:3 compound_mapcount:0 compound_pincount:0 [ 30.538363][ T288] flags: 0x4000000000010200(slab|head|zone=1) [ 30.544532][ T288] raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100043080 [ 30.553111][ T288] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000 [ 30.561684][ T288] page dumped because: kasan: bad access detected [ 30.568189][ T288] page_owner tracks the page as allocated [ 30.573983][ T288] page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 284, ts 29842573380, free_ts 29821103031 [ 30.593142][ T288] post_alloc_hook+0x192/0x1b0 [ 30.597914][ T288] prep_new_page+0x1c/0x110 [ 30.602415][ T288] get_page_from_freelist+0x2cc5/0x2d50 [ 30.607956][ T288] __alloc_pages+0x18f/0x440 [ 30.612538][ T288] new_slab+0xa1/0x4d0 [ 30.616603][ T288] ___slab_alloc+0x381/0x810 [ 30.621190][ T288] __slab_alloc+0x49/0x90 [ 30.625513][ T288] __kmalloc_track_caller+0x169/0x2c0 [ 30.630878][ T288] __alloc_skb+0x21a/0x740 [ 30.635287][ T288] sk_stream_alloc_skb+0x21a/0xb60 [ 30.640396][ T288] tcp_sendmsg_locked+0xc3e/0x3590 [ 30.645513][ T288] tcp_sendmsg+0x2f/0x50 [ 30.649747][ T288] inet_sendmsg+0xa5/0xc0 [ 30.654082][ T288] sock_write_iter+0x29c/0x380 [ 30.658871][ T288] vfs_write+0x802/0xf70 [ 30.663121][ T288] ksys_write+0x140/0x240 [ 30.667443][ T288] page last free stack trace: [ 30.672129][ T288] free_unref_page_prepare+0x542/0x550 [ 30.677679][ T288] free_unref_page+0xa2/0x550 [ 30.682350][ T288] free_compound_page+0x78/0xa0 [ 30.687190][ T288] __put_compound_page+0x77/0xb0 [ 30.692120][ T288] __put_page+0xbc/0xe0 [ 30.696382][ T288] page_to_skb+0x7b9/0xb60 [ 30.700797][ T288] receive_buf+0xc64/0x4ad0 [ 30.705294][ T288] virtnet_poll+0x545/0xef0 [ 30.709786][ T288] __napi_poll+0xbe/0x590 [ 30.714108][ T288] net_rx_action+0x371/0x8e0 [ 30.718693][ T288] handle_softirqs+0x250/0x560 [ 30.723489][ T288] run_ksoftirqd+0x28/0x40 [ 30.727898][ T288] smpboot_thread_fn+0x45a/0x8c0 [ 30.732856][ T288] kthread+0x411/0x500 [ 30.737010][ T288] ret_from_fork+0x1f/0x30 [ 30.741443][ T288] [ 30.743759][ T288] Memory state around the buggy address: [ 30.749378][ T288] ffff88811b84e280: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.757430][ T288] ffff88811b84e300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 30.765484][ T288] >ffff88811b84e380: 00 00 00 00 00 00 00 00 00 00 00 00 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\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 +++ [ 30.773621][ T288