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: 5560 Comm: syz-executor.5 Not tainted 5.3.0-rc7+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:addrconf_f6i_alloc+0x32d/0x4a0 net/ipv6/route.c:4410 Code: 59 bc ff ff 48 85 c0 49 89 c4 74 3d e8 dc 36 32 fb 49 8d bc 24 86 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 1f 01 00 00 RSP: 0018:ffff888065eaf380 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 1ffff1100cbd5e72 RCX: ffffc9000dfa9000 RDX: 000000000000000f RSI: ffffffff86403e74 RDI: 000000000000007a RBP: ffff888065eaf500 R08: ffff88806ab70080 R09: fffffbfff134af90 R10: fffffbfff134af8f R11: ffffffff89a57c7f R12: fffffffffffffff4 R13: ffff888098989b00 R14: ffffffff88347020 R15: 0000000000000000 FS: 00007f25cb340700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000738000 CR3: 000000009591f000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: ipv6_add_addr+0x3aa/0x1c80 net/ipv6/addrconf.c:1087 add_addr+0xe9/0x280 net/ipv6/addrconf.c:3085 init_loopback net/ipv6/addrconf.c:3167 [inline] addrconf_notify+0xfd4/0x23b0 net/ipv6/addrconf.c:3591 notifier_call_chain+0xc2/0x230 kernel/notifier.c:95 __raw_notifier_call_chain kernel/notifier.c:396 [inline] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:403 call_netdevice_notifiers_info+0x3f/0x90 net/core/dev.c:1749 call_netdevice_notifiers_extack net/core/dev.c:1761 [inline] call_netdevice_notifiers net/core/dev.c:1775 [inline] __dev_notify_flags+0x121/0x2c0 net/core/dev.c:7611 dev_change_flags+0x10d/0x170 net/core/dev.c:7649 dev_ifsioc+0x2aa/0xa00 net/core/dev_ioctl.c:237 dev_ioctl+0x1b2/0xc68 net/core/dev_ioctl.c:489 sock_do_ioctl+0x1b7/0x2f0 net/socket.c:1061 sock_ioctl+0x3ed/0x780 net/socket.c:1189 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xdb6/0x13e0 fs/ioctl.c:696 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4598e9 Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f25cb33fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004598e9 RDX: 0000000020000680 RSI: 0000000000008914 RDI: 0000000000000005 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f25cb3406d4 R13: 00000000004cd4d8 R14: 00000000004d6b10 R15: 00000000ffffffff Modules linked in: ---[ end trace d26f3dec09764d5f ]--- RIP: 0010:addrconf_f6i_alloc+0x32d/0x4a0 net/ipv6/route.c:4410 Code: 59 bc ff ff 48 85 c0 49 89 c4 74 3d e8 dc 36 32 fb 49 8d bc 24 86 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 1f 01 00 00 RSP: 0018:ffff888065eaf380 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 1ffff1100cbd5e72 RCX: ffffc9000dfa9000 RDX: 000000000000000f RSI: ffffffff86403e74 RDI: 000000000000007a RBP: ffff888065eaf500 R08: ffff88806ab70080 R09: fffffbfff134af90 R10: fffffbfff134af8f R11: ffffffff89a57c7f R12: fffffffffffffff4 R13: ffff888098989b00 R14: ffffffff88347020 R15: 0000000000000000 FS: 00007f25cb340700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000710bb4 CR3: 000000009591f000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400