device gtp11 entered promiscuous mode device vlan0 entered promiscuous mode IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 6663 Comm: syz-executor986 Not tainted 4.19.144-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__read_once_size include/linux/compiler.h:193 [inline] RIP: 0010:compound_head include/linux/page-flags.h:142 [inline] RIP: 0010:put_page include/linux/mm.h:951 [inline] RIP: 0010:__skb_frag_unref include/linux/skbuff.h:2816 [inline] RIP: 0010:skb_release_data+0x237/0x920 net/core/skbuff.c:568 Code: 48 c1 e8 03 42 80 3c 28 00 0f 85 d9 05 00 00 48 8b 0c 24 49 63 c4 48 c1 e0 04 48 8b 6c 08 30 48 8d 7d 08 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 0f 85 c0 05 00 00 48 8b 5d 08 31 ff 49 89 de 41 83 RSP: 0018:ffff8880ae607a48 EFLAGS: 00010202 RAX: 0000000000000001 RBX: 0000000000000003 RCX: ffff88808982e640 RDX: 0000000000000100 RSI: ffffffff85b479fa RDI: 0000000000000008 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff88808982e640 R15: ffff88808982e670 FS: 0000000002257880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200004c0 CR3: 000000008b4e7000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skb_release_all net/core/skbuff.c:631 [inline] __kfree_skb net/core/skbuff.c:645 [inline] kfree_skb+0x11a/0x3d0 net/core/skbuff.c:663 validate_xmit_skb+0x96a/0xd50 net/core/dev.c:3359 __dev_queue_xmit+0x963/0x2e00 net/core/dev.c:3830 garp_queue_xmit net/802/garp.c:262 [inline] garp_join_timer+0xb6/0xf0 net/802/garp.c:413 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375 __run_timers kernel/time/timer.c:1703 [inline] run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1716 __do_softirq+0x26c/0x9a0 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x215/0x260 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:544 [inline] smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1094 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:console_unlock+0xe7b/0x1110 kernel/printk/printk.c:2465 Code: ff df 48 c1 e8 03 80 3c 08 00 0f 85 66 02 00 00 48 83 3d 9f d3 7d 07 00 0f 84 9e 00 00 00 e8 1c 2a 15 00 48 8b 7c 24 30 57 9d <0f> 1f 44 00 00 e9 9b fc ff ff e8 06 2a 15 00 0f 0b e8 ff 29 15 00 RSP: 0018:ffff88808ef1ec80 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: ffff8880a472e300 RBX: 0000000000000200 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: ffffffff815487b4 RDI: 0000000000000293 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff845cd060 R13: 0000000000000048 R14: 0000000000000000 R15: ffffffff89460d70 vprintk_emit+0x2d1/0x740 kernel/printk/printk.c:1965 vprintk_func+0x79/0x17e kernel/printk/printk_safe.c:397 printk+0xba/0xed kernel/printk/printk.c:2040 addrconf_notify.cold+0x29/0x6b net/ipv6/addrconf.c:3528 notifier_call_chain+0xc0/0x230 kernel/notifier.c:93 __dev_notify_flags+0x280/0x2b0 net/core/dev.c:7722 rtnl_configure_link+0x169/0x230 net/core/rtnetlink.c:2839 rtnl_newlink+0x104e/0x15b0 net/core/rtnetlink.c:3161 rtnetlink_rcv_msg+0x453/0xb80 net/core/rtnetlink.c:4778 netlink_rcv_skb+0x160/0x440 net/netlink/af_netlink.c:2455 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x4d5/0x690 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x6bb/0xc40 net/netlink/af_netlink.c:1909 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:632 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2115 __sys_sendmsg net/socket.c:2153 [inline] __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2160 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x441929 Code: e8 5c ad 02 00 48 83 c4 18 c3 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 0f 83 bb 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fff1d67e8f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441929 RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000005 RBP: 00007fff1d67e900 R08: 0000000100000000 R09: 0000000100000000 R10: 0000000100000000 R11: 0000000000000246 R12: 000000000000af22 R13: 0000000000402800 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 768330f5d74022b2 ]--- RIP: 0010:__read_once_size include/linux/compiler.h:193 [inline] RIP: 0010:compound_head include/linux/page-flags.h:142 [inline] RIP: 0010:put_page include/linux/mm.h:951 [inline] RIP: 0010:__skb_frag_unref include/linux/skbuff.h:2816 [inline] RIP: 0010:skb_release_data+0x237/0x920 net/core/skbuff.c:568 Code: 48 c1 e8 03 42 80 3c 28 00 0f 85 d9 05 00 00 48 8b 0c 24 49 63 c4 48 c1 e0 04 48 8b 6c 08 30 48 8d 7d 08 48 89 f8 48 c1 e8 03 <42> 80 3c 28 00 0f 85 c0 05 00 00 48 8b 5d 08 31 ff 49 89 de 41 83 RSP: 0018:ffff8880ae607a48 EFLAGS: 00010202 RAX: 0000000000000001 RBX: 0000000000000003 RCX: ffff88808982e640 RDX: 0000000000000100 RSI: ffffffff85b479fa RDI: 0000000000000008 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff88808982e640 R15: ffff88808982e670 FS: 0000000002257880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200004c0 CR3: 000000008b4e7000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400