./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1853178007 <...> DUID 00:04:ce:8e:a7:1a:d5:92:ad:c3:fd:35:80:c9:2b:13:ab:38 forked to background, child pid 3188 [ 25.700592][ T3189] 8021q: adding VLAN 0 to HW filter on device bond0 [ 25.702982][ T3189] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.15' (ECDSA) to the list of known hosts. execve("./syz-executor1853178007", ["./syz-executor1853178007"], 0x7fff7d4ca650 /* 10 vars */) = 0 brk(NULL) = 0x555557464000 brk(0x555557464c40) = 0x555557464c40 arch_prctl(ARCH_SET_FS, 0x555557464300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 set_tid_address(0x5555574645d0) = 3609 set_robust_list(0x5555574645e0, 24) = 0 rt_sigaction(SIGRTMIN, {sa_handler=0x7fb685c34600, sa_mask=[], sa_flags=SA_RESTORER|SA_SIGINFO, sa_restorer=0x7fb685c34cd0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7fb685c346a0, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fb685c34cd0}, NULL, 8) = 0 rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1853178007", 4096) = 28 brk(0x555557485c40) = 0x555557485c40 brk(0x555557486000) = 0x555557486000 mprotect(0x7fb685cf6000, 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 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3610 attached , child_tidptr=0x5555574645d0) = 3610 [pid 3610] set_robust_list(0x5555574645e0, 24) = 0 [pid 3610] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 3610] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3610] setsid() = 1 [pid 3610] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 3610] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 3610] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 3610] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 3610] prlimit64(0, RLIMIT_CORE, {rlim_cur=0, rlim_max=0}, NULL) = 0 [pid 3610] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 3610] unshare(CLONE_NEWNS) = 0 [pid 3610] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 3610] unshare(CLONE_NEWIPC) = 0 [pid 3610] unshare(CLONE_NEWCGROUP) = 0 [pid 3610] unshare(CLONE_NEWUTS) = 0 [pid 3610] unshare(CLONE_SYSVSEM) = 0 [pid 3610] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3610] write(3, "16777216", 8) = 8 [pid 3610] close(3) = 0 [pid 3610] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 3610] write(3, "536870912", 9) = 9 [pid 3610] close(3) = 0 [pid 3610] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3610] write(3, "1024", 4) = 4 [pid 3610] close(3) = 0 [pid 3610] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3610] write(3, "8192", 4) = 4 [pid 3610] close(3) = 0 [pid 3610] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3610] write(3, "1024", 4) = 4 [pid 3610] close(3) = 0 [pid 3610] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 3610] write(3, "1024", 4) = 4 [pid 3610] close(3) = 0 [pid 3610] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 3610] write(3, "1024 1048576 500 1024", 21) = 21 [pid 3610] close(3) = 0 [pid 3610] getpid() = 1 [pid 3610] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 3612] set_robust_list(0x7fb685c249e0, 24 [pid 3611] <... clone resumed>, parent_tid=[3], tls=0x7fb685c24700, child_tidptr=0x7fb685c249d0) = 3 [pid 3611] futex(0x7fb685cfc428, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3611] futex(0x7fb685cfc42c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3612] <... set_robust_list resumed>) = 0 [pid 3612] openat(AT_FDCWD, "/dev/net/tun", O_RDONLY) = 3 [pid 3612] futex(0x7fb685cfc42c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3612] futex(0x7fb685cfc428, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3611] <... futex resumed>) = 0 [pid 3611] futex(0x7fb685cfc428, FUTEX_WAKE_PRIVATE, 1000000 [pid 3612] <... futex resumed>) = 0 [pid 3611] <... futex resumed>) = 1 [pid 3612] ioctl(3, TUNSETIFF, 0x20000200 [pid 3611] futex(0x7fb685cfc42c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3612] <... ioctl resumed>) = 0 [pid 3612] futex(0x7fb685cfc42c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3611] <... futex resumed>) = 0 [pid 3611] futex(0x7fb685cfc428, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3611] futex(0x7fb685cfc42c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3612] socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 4 [pid 3612] futex(0x7fb685cfc42c, FUTEX_WAKE_PRIVATE, 1000000 [pid 3611] <... futex resumed>) = 0 [pid 3611] futex(0x7fb685cfc428, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3611] futex(0x7fb685cfc42c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3612] <... futex resumed>) = 1 [pid 3612] socket(AF_PACKET, SOCK_DGRAM, htons(ETH_P_ALL)) = 5 [pid 3612] futex(0x7fb685cfc42c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3611] <... futex resumed>) = 0 [pid 3611] futex(0x7fb685cfc428, FUTEX_WAKE_PRIVATE, 1000000 [pid 3612] ioctl(5, SIOCGIFINDEX, {ifr_name="rose0" [pid 3611] <... futex resumed>) = 0 [pid 3612] <... ioctl resumed>, ifr_ifindex=11}) = 0 [pid 3611] futex(0x7fb685cfc42c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3612] futex(0x7fb685cfc42c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3611] <... futex resumed>) = 0 [pid 3612] futex(0x7fb685cfc428, FUTEX_WAIT_PRIVATE, 0, NULL [pid 3611] futex(0x7fb685cfc428, FUTEX_WAKE_PRIVATE, 1000000 [pid 3612] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 3611] <... futex resumed>) = 0 [pid 3612] ioctl(3, TUNSETQUEUE, 0x20000340 [pid 3611] futex(0x7fb685cfc42c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 3612] <... ioctl resumed>) = 0 [pid 3612] futex(0x7fb685cfc42c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 3611] <... futex resumed>) = 0 [pid 3612] sendmsg(4, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\x34\x00\x00\x00\x11\x00\x01\xe9\x0d\x7d\x1f\xc7\x4e\x1b\xed\x42\xec\x45\xb2\xfc\x0b\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=52}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0 [pid 3611] futex(0x7fb685cfc428, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3611] futex(0x7fb685cfc42c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 3611] futex(0x7fb685cfc43c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3611] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fb685be3000 [pid 3611] mprotect(0x7fb685be4000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 3611] clone(child_stack=0x7fb685c033f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tid=[4], tls=0x7fb685c03700, child_tidptr=0x7fb685c039d0) = 4 [pid 3611] futex(0x7fb685cfc438, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 3611] futex(0x7fb685cfc43c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 3613 attached [pid 3613] set_robust_list(0x7fb685c039e0, 24) = 0 [pid 3613] close(3) = 0 [pid 3613] futex(0x7fb685cfc43c, FUTEX_WAKE_PRIVATE, 1000000 [pid 3611] <... futex resumed>) = 0 [pid 3613] <... futex resumed>) = 1 syzkaller login: [ 48.202567][ T3612] netlink: 20 bytes leftover after parsing attributes in process `syz-executor185'. [ 48.259517][ T3612] ================================================================== [ 48.259529][ T3612] BUG: KASAN: use-after-free in free_netdev+0x58c/0x620 [ 48.259590][ T3612] Read of size 8 at addr ffff888021442738 by task syz-executor185/3612 [ 48.259608][ T3612] [ 48.259613][ T3612] CPU: 1 PID: 3612 Comm: syz-executor185 Not tainted 5.19.0-rc2-syzkaller-00312-g4875d94c69d5 #0 [ 48.259636][ T3612] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.259647][ T3612] Call Trace: [ 48.259654][ T3612] [ 48.259661][ T3612] dump_stack_lvl+0xcd/0x134 [ 48.259686][ T3612] print_address_description.constprop.0.cold+0xeb/0x495 [ 48.259715][ T3612] ? free_netdev+0x58c/0x620 [ 48.259736][ T3612] kasan_report.cold+0xf4/0x1c6 [ 48.259757][ T3612] ? free_netdev+0x58c/0x620 [ 48.259780][ T3612] free_netdev+0x58c/0x620 [ 48.259802][ T3612] netdev_run_todo+0xb18/0x10b0 [ 48.259823][ T3612] ? mutex_lock_io_nested+0x1190/0x1190 [ 48.259850][ T3612] ? generic_xdp_install+0x4a0/0x4a0 [ 48.259870][ T3612] ? rtnetlink_rcv_msg+0x3af/0xc90 [ 48.259895][ T3612] ? lock_downgrade+0x6e0/0x6e0 [ 48.259916][ T3612] ? bpf_lsm_capable+0x5/0x10 [ 48.259943][ T3612] ? rtnl_dellinkprop+0x50/0x50 [ 48.259966][ T3612] rtnetlink_rcv_msg+0x447/0xc90 [ 48.259991][ T3612] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 48.260022][ T3612] netlink_rcv_skb+0x153/0x420 [ 48.260043][ T3612] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 48.260065][ T3612] ? netlink_ack+0xa80/0xa80 [ 48.260085][ T3612] ? netlink_deliver_tap+0x1a2/0xc40 [ 48.260109][ T3612] ? netlink_deliver_tap+0x1b1/0xc40 [ 48.260134][ T3612] netlink_unicast+0x543/0x7f0 [ 48.260156][ T3612] ? netlink_attachskb+0x880/0x880 [ 48.260175][ T3612] ? __virt_addr_valid+0x5d/0x2d0 [ 48.260199][ T3612] ? __phys_addr_symbol+0x2c/0x70 [ 48.260223][ T3612] ? __check_object_size+0x2de/0x700 [ 48.260248][ T3612] netlink_sendmsg+0x917/0xe10 [ 48.260270][ T3612] ? netlink_unicast+0x7f0/0x7f0 [ 48.260293][ T3612] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 48.260316][ T3612] ? netlink_unicast+0x7f0/0x7f0 [ 48.260337][ T3612] sock_sendmsg+0xcf/0x120 [ 48.260364][ T3612] ____sys_sendmsg+0x6eb/0x810 [ 48.260391][ T3612] ? kernel_sendmsg+0x50/0x50 [ 48.260416][ T3612] ? do_recvmmsg+0x6d0/0x6d0 [ 48.260440][ T3612] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 48.260468][ T3612] ? lockdep_hardirqs_on+0x79/0x100 [ 48.260492][ T3612] ___sys_sendmsg+0xf3/0x170 [ 48.260515][ T3612] ? sendmsg_copy_msghdr+0x160/0x160 [ 48.260550][ T3612] ? __fget_files+0x248/0x440 [ 48.260574][ T3612] ? lock_downgrade+0x6e0/0x6e0 [ 48.260596][ T3612] ? ptrace_stop.part.0+0x5ec/0xa80 [ 48.260620][ T3612] ? __fget_files+0x26a/0x440 [ 48.260647][ T3612] ? __fget_light+0xe5/0x270 [ 48.260674][ T3612] __x64_sys_sendmsg+0x132/0x220 [ 48.260697][ T3612] ? __sys_sendmsg+0x1b0/0x1b0 [ 48.260724][ T3612] ? _raw_spin_unlock_irq+0x2a/0x40 [ 48.260747][ T3612] ? ptrace_notify+0xfa/0x140 [ 48.260770][ T3612] do_syscall_64+0x35/0xb0 [ 48.260796][ T3612] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 48.260821][ T3612] RIP: 0033:0x7fb685c72db9 [ 48.260839][ T3612] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 71 15 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 [ 48.260860][ T3612] RSP: 002b:00007fb685c24308 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 48.260882][ T3612] RAX: ffffffffffffffda RBX: 00007fb685cfc428 RCX: 00007fb685c72db9 [ 48.260896][ T3612] RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000004 [ 48.260908][ T3612] RBP: 00007fb685cfc420 R08: 0000000000000000 R09: 0000000000000000 [ 48.260919][ T3612] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb685cfc42c [ 48.260926][ T3612] R13: 00007fb685cc915c R14: 74656e2f7665642f R15: 0000000000022000 [ 48.260938][ T3612] [ 48.260942][ T3612] [ 48.260944][ T3612] Allocated by task 3612: [ 48.260950][ T3612] kasan_save_stack+0x1e/0x40 [ 48.260962][ T3612] __kasan_kmalloc+0xa9/0xd0 [ 48.260971][ T3612] sk_prot_alloc+0x110/0x290 [ 48.260982][ T3612] sk_alloc+0x36/0x770 [ 48.260993][ T3612] tun_chr_open+0x7b/0x540 [ 48.261003][ T3612] misc_open+0x376/0x4a0 [ 48.261014][ T3612] chrdev_open+0x266/0x770 [ 48.261025][ T3612] do_dentry_open+0x4a1/0x11f0 [ 48.261039][ T3612] path_openat+0x1c71/0x2910 [ 48.261050][ T3612] do_filp_open+0x1aa/0x400 [ 48.261060][ T3612] do_sys_openat2+0x16d/0x4c0 [ 48.261072][ T3612] __x64_sys_openat+0x13f/0x1f0 [ 48.261084][ T3612] do_syscall_64+0x35/0xb0 [ 48.261095][ T3612] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 48.261108][ T3612] [ 48.261110][ T3612] Freed by task 3613: [ 48.261115][ T3612] kasan_save_stack+0x1e/0x40 [ 48.261124][ T3612] kasan_set_track+0x21/0x30 [ 48.261133][ T3612] kasan_set_free_info+0x20/0x30 [ 48.261145][ T3612] ____kasan_slab_free+0x166/0x1a0 [ 48.261155][ T3612] slab_free_freelist_hook+0x8b/0x1c0 [ 48.261168][ T3612] kfree+0xd6/0x4d0 [ 48.261178][ T3612] __sk_destruct+0x5e5/0x710 [ 48.261190][ T3612] __sk_free+0x1a4/0x4a0 [ 48.261200][ T3612] sk_free+0x78/0xa0 [ 48.261211][ T3612] __tun_detach+0xdb7/0x13e0 [ 48.261220][ T3612] tun_chr_close+0x15c/0x180 [ 48.261229][ T3612] __fput+0x277/0x9d0 [ 48.261238][ T3612] task_work_run+0xdd/0x1a0 [ 48.261251][ T3612] ptrace_notify+0x114/0x140 [ 48.261260][ T3612] syscall_exit_to_user_mode_prepare+0xdb/0x230 [ 48.261272][ T3612] syscall_exit_to_user_mode+0x9/0x50 [ 48.261282][ T3612] do_syscall_64+0x42/0xb0 [ 48.261294][ T3612] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 48.261306][ T3612] [ 48.261308][ T3612] The buggy address belongs to the object at ffff888021442000 [ 48.261308][ T3612] which belongs to the cache kmalloc-4k of size 4096 [ 48.261317][ T3612] The buggy address is located 1848 bytes inside of [ 48.261317][ T3612] 4096-byte region [ffff888021442000, ffff888021443000) [ 48.261328][ T3612] [ 48.261330][ T3612] The buggy address belongs to the physical page: [ 48.261335][ T3612] page:ffffea0000851000 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x21440 [ 48.261348][ T3612] head:ffffea0000851000 order:3 compound_mapcount:0 compound_pincount:0 [ 48.261356][ T3612] flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff) [ 48.261374][ T3612] raw: 00fff00000010200 dead000000000100 dead000000000122 ffff888011842140 [ 48.261385][ T3612] raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000 [ 48.261391][ T3612] page dumped because: kasan: bad access detected [ 48.261396][ T3612] page_owner tracks the page as allocated [ 48.261399][ T3612] page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 2987, tgid 2987 (udevd), ts 15140632604, free_ts 15121129680 [ 48.261420][ T3612] get_page_from_freelist+0x1290/0x3b70 [ 48.261434][ T3612] __alloc_pages+0x1c7/0x510 [ 48.261444][ T3612] alloc_pages+0x1aa/0x310 [ 48.261453][ T3612] allocate_slab+0x26c/0x3c0 [ 48.261465][ T3612] ___slab_alloc+0x985/0xd90 [ 48.261477][ T3612] __slab_alloc.constprop.0+0x4d/0xa0 [ 48.261490][ T3612] __kmalloc+0x318/0x350 [ 48.261501][ T3612] tomoyo_realpath_from_path+0xc3/0x620 [ 48.261516][ T3612] tomoyo_check_open_permission+0x272/0x380 [ 48.261530][ T3612] tomoyo_file_open+0x9d/0xc0 [ 48.261545][ T3612] security_file_open+0x45/0xb0 [ 48.261558][ T3612] do_dentry_open+0x349/0x11f0 [ 48.261569][ T3612] path_openat+0x1c71/0x2910 [ 48.261579][ T3612] do_filp_open+0x1aa/0x400 [ 48.261590][ T3612] do_sys_openat2+0x16d/0x4c0 [ 48.261601][ T3612] __x64_sys_openat+0x13f/0x1f0 [ 48.261613][ T3612] page last free stack trace: [ 48.261615][ T3612] free_pcp_prepare+0x549/0xd20 [ 48.261628][ T3612] free_unref_page+0x19/0x6a0 [ 48.261638][ T3612] qlist_free_all+0x6a/0x170 [ 48.261649][ T3612] kasan_quarantine_reduce+0x180/0x200 [ 48.261660][ T3612] __kasan_slab_alloc+0xa2/0xc0 [ 48.261671][ T3612] kmem_cache_alloc_node+0x255/0x3f0 [ 48.261683][ T3612] __alloc_skb+0x215/0x340 [ 48.261693][ T3612] netlink_sendmsg+0x9a2/0xe10 [ 48.261702][ T3612] sock_sendmsg+0xcf/0x120 [ 48.261715][ T3612] ____sys_sendmsg+0x6eb/0x810 [ 48.261727][ T3612] ___sys_sendmsg+0xf3/0x170 [ 48.261737][ T3612] __x64_sys_sendmsg+0x132/0x220 [ 48.261748][ T3612] do_syscall_64+0x35/0xb0 [ 48.261759][ T3612] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 48.261772][ T3612] [ 48.261774][ T3612] Memory state around the buggy address: [ 48.261778][ T3612] ffff888021442600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 48.261787][ T3612] ffff888021442680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 48.261794][ T3612] >ffff888021442700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 48.261800][ T3612] ^ [ 48.261805][ T3612] ffff888021442780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 48.261813][ T3612] ffff888021442800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 48.261819][ T3612] ================================================================== [ 48.261851][ T3612] Kernel panic - not syncing: panic_on_warn set ... [ 49.121115][ T3612] CPU: 1 PID: 3612 Comm: syz-executor185 Not tainted 5.19.0-rc2-syzkaller-00312-g4875d94c69d5 #0 [ 49.131620][ T3612] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.141680][ T3612] Call Trace: [ 49.144955][ T3612] [ 49.147891][ T3612] dump_stack_lvl+0xcd/0x134 [ 49.152490][ T3612] panic+0x2d7/0x636 [ 49.156402][ T3612] ? panic_print_sys_info.part.0+0x10b/0x10b [ 49.162414][ T3612] ? free_netdev+0x58c/0x620 [ 49.167027][ T3612] ? free_netdev+0x58c/0x620 [ 49.171628][ T3612] end_report.part.0+0x3f/0x7c [ 49.176406][ T3612] kasan_report.cold+0x93/0x1c6 [ 49.181261][ T3612] ? free_netdev+0x58c/0x620 [ 49.185853][ T3612] free_netdev+0x58c/0x620 [ 49.190273][ T3612] netdev_run_todo+0xb18/0x10b0 [ 49.195125][ T3612] ? mutex_lock_io_nested+0x1190/0x1190 [ 49.200676][ T3612] ? generic_xdp_install+0x4a0/0x4a0 [ 49.205960][ T3612] ? rtnetlink_rcv_msg+0x3af/0xc90 [ 49.211082][ T3612] ? lock_downgrade+0x6e0/0x6e0 [ 49.215946][ T3612] ? bpf_lsm_capable+0x5/0x10 [ 49.220632][ T3612] ? rtnl_dellinkprop+0x50/0x50 [ 49.225490][ T3612] rtnetlink_rcv_msg+0x447/0xc90 [ 49.230436][ T3612] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 49.235229][ T3612] netlink_rcv_skb+0x153/0x420 [ 49.239993][ T3612] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 49.244778][ T3612] ? netlink_ack+0xa80/0xa80 [ 49.249365][ T3612] ? netlink_deliver_tap+0x1a2/0xc40 [ 49.254653][ T3612] ? netlink_deliver_tap+0x1b1/0xc40 [ 49.259941][ T3612] netlink_unicast+0x543/0x7f0 [ 49.264707][ T3612] ? netlink_attachskb+0x880/0x880 [ 49.269820][ T3612] ? __virt_addr_valid+0x5d/0x2d0 [ 49.274852][ T3612] ? __phys_addr_symbol+0x2c/0x70 [ 49.279882][ T3612] ? __check_object_size+0x2de/0x700 [ 49.285170][ T3612] netlink_sendmsg+0x917/0xe10 [ 49.289948][ T3612] ? netlink_unicast+0x7f0/0x7f0 [ 49.294890][ T3612] ? bpf_lsm_socket_sendmsg+0x5/0x10 [ 49.300176][ T3612] ? netlink_unicast+0x7f0/0x7f0 [ 49.305112][ T3612] sock_sendmsg+0xcf/0x120 [ 49.309562][ T3612] ____sys_sendmsg+0x6eb/0x810 [ 49.314356][ T3612] ? kernel_sendmsg+0x50/0x50 [ 49.319046][ T3612] ? do_recvmmsg+0x6d0/0x6d0 [ 49.323657][ T3612] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 49.330051][ T3612] ? lockdep_hardirqs_on+0x79/0x100 [ 49.335271][ T3612] ___sys_sendmsg+0xf3/0x170 [ 49.339871][ T3612] ? sendmsg_copy_msghdr+0x160/0x160 [ 49.345173][ T3612] ? __fget_files+0x248/0x440 [ 49.349860][ T3612] ? lock_downgrade+0x6e0/0x6e0 [ 49.354717][ T3612] ? ptrace_stop.part.0+0x5ec/0xa80 [ 49.359931][ T3612] ? __fget_files+0x26a/0x440 [ 49.364639][ T3612] ? __fget_light+0xe5/0x270 [ 49.369245][ T3612] __x64_sys_sendmsg+0x132/0x220 [ 49.374193][ T3612] ? __sys_sendmsg+0x1b0/0x1b0 [ 49.378973][ T3612] ? _raw_spin_unlock_irq+0x2a/0x40 [ 49.384179][ T3612] ? ptrace_notify+0xfa/0x140 [ 49.388880][ T3612] do_syscall_64+0x35/0xb0 [ 49.393301][ T3612] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 49.399211][ T3612] RIP: 0033:0x7fb685c72db9 [ 49.403637][ T3612] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 71 15 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 [ 49.423250][ T3612] RSP: 002b:00007fb685c24308 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 49.431664][ T3612] RAX: ffffffffffffffda RBX: 00007fb685cfc428 RCX: 00007fb685c72db9 [ 49.439635][ T3612] RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000004 [ 49.447602][ T3612] RBP: 00007fb685cfc420 R08: 0000000000000000 R09: 0000000000000000 [ 49.455584][ T3612] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb685cfc42c [ 49.463552][ T3612] R13: 00007fb685cc915c R14: 74656e2f7665642f R15: 0000000000022000 [ 49.471527][ T3612] [ 49.474722][ T3612] Kernel Offset: disabled [ 49.479056][ T3612] Rebooting in 86400 seconds..