./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1498614046
<...>
Warning: Permanently added '10.128.1.35' (ED25519) to the list of known hosts.
execve("./syz-executor1498614046", ["./syz-executor1498614046"], 0x7ffd124ce720 /* 10 vars */) = 0
brk(NULL) = 0x55557e677000
brk(0x55557e677d00) = 0x55557e677d00
arch_prctl(ARCH_SET_FS, 0x55557e677380) = 0
set_tid_address(0x55557e677650) = 5229
set_robust_list(0x55557e677660, 24) = 0
rseq(0x55557e677ca0, 0x20, 0, 0x53053053) = 0
prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0
readlink("/proc/self/exe", "/root/syz-executor1498614046", 4096) = 28
getrandom("\xb8\x49\xd6\x74\x34\x73\xa4\xe7", 8, GRND_NONBLOCK) = 8
brk(NULL) = 0x55557e677d00
brk(0x55557e698d00) = 0x55557e698d00
brk(0x55557e699000) = 0x55557e699000
mprotect(0x7f79cb640000, 16384, PROT_READ) = 0
mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000
mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000
mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557e677650) = 5230
./strace-static-x86_64: Process 5230 attached
[pid 5230] set_robust_list(0x55557e677660, 24) = 0
[pid 5230] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 5230] setpgid(0, 0) = 0
[pid 5230] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 5230] write(3, "1000", 4) = 4
[pid 5230] close(3) = 0
[pid 5230] write(1, "executing program\n", 18executing program
) = 18
[pid 5230] socketpair(AF_UNIX, SOCK_STREAM, 0, [3, 4]) = 0
[pid 5230] sendmsg(4, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\xdb", iov_len=1}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, MSG_OOB|MSG_DONTWAIT) = 1
[pid 5230] recvmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=NULL, msg_iovlen=0, msg_controllen=0, msg_flags=MSG_OOB}, MSG_OOB|MSG_WAITFORONE) = 1
[pid 5230] sendmsg(4, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x11", iov_len=1}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, MSG_OOB|MSG_NOSIGNAL|MSG_MORE) = 1
[pid 5230] recvfrom(3, "\x11", 125, MSG_DONTROUTE|MSG_TRUNC, NULL, NULL) = 1
[ 57.552896][ T5230] ==================================================================
[ 57.561006][ T5230] BUG: KASAN: slab-use-after-free in unix_stream_read_actor+0xa6/0xb0
[ 57.569272][ T5230] Read of size 4 at addr ffff88802fc2d904 by task syz-executor149/5230
[ 57.577497][ T5230]
[ 57.579819][ T5230] CPU: 0 UID: 0 PID: 5230 Comm: syz-executor149 Not tainted 6.11.0-rc5-syzkaller-00742-gfbdaffe41adc #0
[ 57.591007][ T5230] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
[ 57.601151][ T5230] Call Trace:
[ 57.604433][ T5230]
[ 57.607354][ T5230] dump_stack_lvl+0x241/0x360
[ 57.612036][ T5230] ? __pfx_dump_stack_lvl+0x10/0x10
[ 57.617266][ T5230] ? __pfx__printk+0x10/0x10
[ 57.622037][ T5230] ? _printk+0xd5/0x120
[ 57.626191][ T5230] ? __virt_addr_valid+0x183/0x530
[ 57.631290][ T5230] ? __virt_addr_valid+0x183/0x530
[ 57.636419][ T5230] print_report+0x169/0x550
[ 57.641008][ T5230] ? __virt_addr_valid+0x183/0x530
[ 57.646170][ T5230] ? __virt_addr_valid+0x183/0x530
[ 57.651381][ T5230] ? __virt_addr_valid+0x45f/0x530
[ 57.656491][ T5230] ? __phys_addr+0xba/0x170
[ 57.661078][ T5230] ? unix_stream_read_actor+0xa6/0xb0
[ 57.666452][ T5230] kasan_report+0x143/0x180
[ 57.670954][ T5230] ? unix_stream_read_actor+0xa6/0xb0
[ 57.676446][ T5230] unix_stream_read_actor+0xa6/0xb0
[ 57.681643][ T5230] unix_stream_recv_urg+0x1df/0x320
[ 57.686849][ T5230] unix_stream_read_generic+0x2456/0x2520
[ 57.692580][ T5230] ? aa_label_sk_perm+0x4f0/0x6d0
[ 57.697625][ T5230] ? __pfx_aa_label_sk_perm+0x10/0x10
[ 57.702994][ T5230] ? mark_lock+0x9a/0x350
[ 57.707316][ T5230] ? __pfx_unix_stream_read_generic+0x10/0x10
[ 57.713382][ T5230] ? aa_sk_perm+0x96d/0xab0
[ 57.717902][ T5230] unix_stream_recvmsg+0x22b/0x2c0
[ 57.723009][ T5230] ? __pfx_unix_stream_recvmsg+0x10/0x10
[ 57.728627][ T5230] ? __pfx_unix_stream_read_actor+0x10/0x10
[ 57.734540][ T5230] ? __pfx___might_resched+0x10/0x10
[ 57.739873][ T5230] ? aa_sock_msg_perm+0x91/0x160
[ 57.744801][ T5230] ? bpf_lsm_socket_recvmsg+0x9/0x10
[ 57.750084][ T5230] ? security_socket_recvmsg+0x90/0xb0
[ 57.755533][ T5230] ? __pfx_unix_stream_recvmsg+0x10/0x10
[ 57.761151][ T5230] sock_recvmsg+0x22f/0x280
[ 57.765672][ T5230] ____sys_recvmsg+0x1db/0x470
[ 57.770520][ T5230] ? __pfx_____sys_recvmsg+0x10/0x10
[ 57.775808][ T5230] __sys_recvmsg+0x2f0/0x3e0
[ 57.780507][ T5230] ? __pfx___sys_recvmsg+0x10/0x10
[ 57.785634][ T5230] ? lockdep_hardirqs_on+0x99/0x150
[ 57.790824][ T5230] ? _raw_spin_unlock_irq+0x2e/0x50
[ 57.796022][ T5230] ? ptrace_notify+0x279/0x380
[ 57.800792][ T5230] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 57.807271][ T5230] ? do_syscall_64+0x100/0x230
[ 57.812037][ T5230] do_syscall_64+0xf3/0x230
[ 57.816535][ T5230] ? clear_bhb_loop+0x35/0x90
[ 57.821323][ T5230] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 57.827254][ T5230] RIP: 0033:0x7f79cb5cdbf9
[ 57.831770][ T5230] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 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 b8 ff ff ff f7 d8 64 89 01 48
[ 57.851379][ T5230] RSP: 002b:00007fffebf5d328 EFLAGS: 00000246 ORIG_RAX: 000000000000002f
[ 57.860478][ T5230] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f79cb5cdbf9
[ 57.868454][ T5230] RDX: 0000000000002001 RSI: 0000000020000640 RDI: 0000000000000003
[ 57.876415][ T5230] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[ 57.884375][ T5230] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 57.892382][ T5230] R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001
[ 57.900355][ T5230]
[ 57.903362][ T5230]
[ 57.905671][ T5230] Allocated by task 5230:
[ 57.909993][ T5230] kasan_save_track+0x3f/0x80
[ 57.914664][ T5230] __kasan_slab_alloc+0x66/0x80
[ 57.919609][ T5230] kmem_cache_alloc_node_noprof+0x16b/0x320
[ 57.925514][ T5230] __alloc_skb+0x1c3/0x440
[ 57.929936][ T5230] alloc_skb_with_frags+0xc3/0x770
[ 57.935107][ T5230] sock_alloc_send_pskb+0x91a/0xa60
[ 57.940324][ T5230] queue_oob+0x108/0x680
[ 57.944558][ T5230] unix_stream_sendmsg+0xd24/0xf80
[ 57.949743][ T5230] __sock_sendmsg+0x221/0x270
[ 57.954413][ T5230] ____sys_sendmsg+0x525/0x7d0
[ 57.959248][ T5230] __sys_sendmsg+0x2b0/0x3a0
[ 57.963829][ T5230] do_syscall_64+0xf3/0x230
[ 57.968322][ T5230] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 57.974204][ T5230]
[ 57.976509][ T5230] Freed by task 5230:
[ 57.980488][ T5230] kasan_save_track+0x3f/0x80
[ 57.985180][ T5230] kasan_save_free_info+0x40/0x50
[ 57.990193][ T5230] poison_slab_object+0xe0/0x150
[ 57.995124][ T5230] __kasan_slab_free+0x37/0x60
[ 57.999879][ T5230] kmem_cache_free+0x145/0x350
[ 58.004628][ T5230] unix_stream_read_generic+0x1ef6/0x2520
[ 58.010521][ T5230] unix_stream_recvmsg+0x22b/0x2c0
[ 58.015620][ T5230] sock_recvmsg+0x22f/0x280
[ 58.020129][ T5230] __sys_recvfrom+0x256/0x3e0
[ 58.024796][ T5230] __x64_sys_recvfrom+0xde/0x100
[ 58.029743][ T5230] do_syscall_64+0xf3/0x230
[ 58.034235][ T5230] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 58.040118][ T5230]
[ 58.042453][ T5230] The buggy address belongs to the object at ffff88802fc2d8c0
[ 58.042453][ T5230] which belongs to the cache skbuff_head_cache of size 240
[ 58.057047][ T5230] The buggy address is located 68 bytes inside of
[ 58.057047][ T5230] freed 240-byte region [ffff88802fc2d8c0, ffff88802fc2d9b0)
[ 58.070748][ T5230]
[ 58.073058][ T5230] The buggy address belongs to the physical page:
[ 58.079467][ T5230] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x2fc2d
[ 58.088235][ T5230] flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff)
[ 58.095375][ T5230] page_type: 0xfdffffff(slab)
[ 58.100042][ T5230] raw: 00fff00000000000 ffff88801ee94780 dead000000000122 0000000000000000
[ 58.108621][ T5230] raw: 0000000000000000 00000000800c000c 00000001fdffffff 0000000000000000
[ 58.117190][ T5230] page dumped because: kasan: bad access detected
[ 58.123592][ T5230] page_owner tracks the page as allocated
[ 58.129292][ T5230] page last allocated via order 0, migratetype Unmovable, gfp_mask 0x52820(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP), pid 5224, tgid 5224 (sshd), ts 57527916505, free_ts 57439079814
[ 58.147946][ T5230] post_alloc_hook+0x1f3/0x230
[ 58.152720][ T5230] get_page_from_freelist+0x2e4c/0x2f10
[ 58.158343][ T5230] __alloc_pages_noprof+0x256/0x6c0
[ 58.163631][ T5230] alloc_slab_page+0x5f/0x120
[ 58.168344][ T5230] allocate_slab+0x5a/0x2f0
[ 58.172955][ T5230] ___slab_alloc+0xcd1/0x14b0
[ 58.177629][ T5230] __slab_alloc+0x58/0xa0
[ 58.181973][ T5230] kmem_cache_alloc_noprof+0x1c1/0x2a0
[ 58.187525][ T5230] skb_clone+0x20c/0x390
[ 58.191777][ T5230] dev_queue_xmit_nit+0x419/0xc10
[ 58.196890][ T5230] dev_hard_start_xmit+0x15f/0x7e0
[ 58.202004][ T5230] sch_direct_xmit+0x2b6/0x5f0
[ 58.206770][ T5230] __dev_queue_xmit+0x1a7f/0x3e90
[ 58.211790][ T5230] ip_finish_output2+0xd41/0x1390
[ 58.216808][ T5230] __ip_queue_xmit+0x118c/0x1b80
[ 58.221856][ T5230] __tcp_transmit_skb+0x2544/0x3b30
[ 58.227083][ T5230] page last free pid 5229 tgid 5229 stack trace:
[ 58.233416][ T5230] free_unref_folios+0x103a/0x1b00
[ 58.238532][ T5230] folios_put_refs+0x76e/0x860
[ 58.243286][ T5230] free_pages_and_swap_cache+0x2ea/0x690
[ 58.248997][ T5230] tlb_flush_mmu+0x3a3/0x680
[ 58.253603][ T5230] tlb_finish_mmu+0xd4/0x200
[ 58.258186][ T5230] exit_mmap+0x44f/0xc80
[ 58.262409][ T5230] __mmput+0x115/0x390
[ 58.266465][ T5230] exec_mmap+0x680/0x710
[ 58.270691][ T5230] begin_new_exec+0x12c6/0x2050
[ 58.275557][ T5230] load_elf_binary+0x969/0x2680
[ 58.280414][ T5230] bprm_execve+0xaf8/0x1770
[ 58.284921][ T5230] do_execveat_common+0x55f/0x6f0
[ 58.289974][ T5230] __x64_sys_execve+0x92/0xb0
[ 58.294649][ T5230] do_syscall_64+0xf3/0x230
[ 58.299149][ T5230] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 58.305179][ T5230]
[ 58.307497][ T5230] Memory state around the buggy address:
[ 58.313120][ T5230] ffff88802fc2d800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc
[ 58.321171][ T5230] ffff88802fc2d880: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb
[ 58.329231][ T5230] >ffff88802fc2d900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 58.337295][ T5230] ^
[ 58.341365][ T5230] ffff88802fc2d980: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc
[ 58.349601][ T5230] ffff88802fc2da00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 58.357939][ T5230] ==================================================================
[ 58.367350][ T5230] Kernel panic - not syncing: KASAN: panic_on_warn set ...
[ 58.374684][ T5230] CPU: 0 UID: 0 PID: 5230 Comm: syz-executor149 Not tainted 6.11.0-rc5-syzkaller-00742-gfbdaffe41adc #0
[ 58.385888][ T5230] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
[ 58.396046][ T5230] Call Trace:
[ 58.399373][ T5230]
[ 58.402305][ T5230] dump_stack_lvl+0x241/0x360
[ 58.406979][ T5230] ? __pfx_dump_stack_lvl+0x10/0x10
[ 58.412365][ T5230] ? __pfx__printk+0x10/0x10
[ 58.416969][ T5230] ? preempt_schedule+0xe1/0xf0
[ 58.421843][ T5230] ? vscnprintf+0x5d/0x90
[ 58.426167][ T5230] panic+0x349/0x860
[ 58.430050][ T5230] ? check_panic_on_warn+0x21/0xb0
[ 58.435172][ T5230] ? __pfx_panic+0x10/0x10
[ 58.439579][ T5230] ? _raw_spin_unlock_irqrestore+0x130/0x140
[ 58.445568][ T5230] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[ 58.452600][ T5230] ? print_report+0x502/0x550
[ 58.457296][ T5230] check_panic_on_warn+0x86/0xb0
[ 58.462237][ T5230] ? unix_stream_read_actor+0xa6/0xb0
[ 58.467699][ T5230] end_report+0x77/0x160
[ 58.471972][ T5230] kasan_report+0x154/0x180
[ 58.476548][ T5230] ? unix_stream_read_actor+0xa6/0xb0
[ 58.481942][ T5230] unix_stream_read_actor+0xa6/0xb0
[ 58.487155][ T5230] unix_stream_recv_urg+0x1df/0x320
[ 58.492372][ T5230] unix_stream_read_generic+0x2456/0x2520
[ 58.498093][ T5230] ? aa_label_sk_perm+0x4f0/0x6d0
[ 58.503116][ T5230] ? __pfx_aa_label_sk_perm+0x10/0x10
[ 58.508479][ T5230] ? mark_lock+0x9a/0x350
[ 58.512892][ T5230] ? __pfx_unix_stream_read_generic+0x10/0x10
[ 58.519139][ T5230] ? aa_sk_perm+0x96d/0xab0
[ 58.523633][ T5230] unix_stream_recvmsg+0x22b/0x2c0
[ 58.528737][ T5230] ? __pfx_unix_stream_recvmsg+0x10/0x10
[ 58.534368][ T5230] ? __pfx_unix_stream_read_actor+0x10/0x10
[ 58.540258][ T5230] ? __pfx___might_resched+0x10/0x10
[ 58.545534][ T5230] ? aa_sock_msg_perm+0x91/0x160
[ 58.550570][ T5230] ? bpf_lsm_socket_recvmsg+0x9/0x10
[ 58.555925][ T5230] ? security_socket_recvmsg+0x90/0xb0
[ 58.561390][ T5230] ? __pfx_unix_stream_recvmsg+0x10/0x10
[ 58.567029][ T5230] sock_recvmsg+0x22f/0x280
[ 58.571527][ T5230] ____sys_recvmsg+0x1db/0x470
[ 58.576289][ T5230] ? __pfx_____sys_recvmsg+0x10/0x10
[ 58.581582][ T5230] __sys_recvmsg+0x2f0/0x3e0
[ 58.586182][ T5230] ? __pfx___sys_recvmsg+0x10/0x10
[ 58.591376][ T5230] ? lockdep_hardirqs_on+0x99/0x150
[ 58.596661][ T5230] ? _raw_spin_unlock_irq+0x2e/0x50
[ 58.601880][ T5230] ? ptrace_notify+0x279/0x380
[ 58.606652][ T5230] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10
[ 58.612994][ T5230] ? do_syscall_64+0x100/0x230
[ 58.617816][ T5230] do_syscall_64+0xf3/0x230
[ 58.622334][ T5230] ? clear_bhb_loop+0x35/0x90
[ 58.627014][ T5230] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 58.632925][ T5230] RIP: 0033:0x7f79cb5cdbf9
[ 58.637356][ T5230] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 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 b8 ff ff ff f7 d8 64 89 01 48
[ 58.656963][ T5230] RSP: 002b:00007fffebf5d328 EFLAGS: 00000246 ORIG_RAX: 000000000000002f
[ 58.665375][ T5230] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f79cb5cdbf9
[ 58.673342][ T5230] RDX: 0000000000002001 RSI: 0000000020000640 RDI: 0000000000000003
[ 58.681397][ T5230] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[ 58.689455][ T5230] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 58.697441][ T5230] R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001
[ 58.705503][ T5230]
[ 58.708957][ T5230] Kernel Offset: disabled
[ 58.713277][ T5230] Rebooting in 86400 seconds..