bisecting fixing commit since 32ee7492f104d82b01a44fc4b4ae17d5d2bb237b
building syzkaller on 93e5e33559b98e47f3743e6d907ca8444fbba5d4
testing commit 32ee7492f104d82b01a44fc4b4ae17d5d2bb237b with gcc (GCC) 8.1.0
kernel signature: 961a6ae9bc5d9f04dfca3862131ae2296134c6845ce5d274848a2b5dbf54924a
all runs: crashed: general protection fault in nft_rhash_insert
testing current HEAD dda0e2920330128e0dbdeb11c8f25031aa40b11c
testing commit dda0e2920330128e0dbdeb11c8f25031aa40b11c with gcc (GCC) 8.1.0
kernel signature: dc6ca62166d7b1b7a85b10cbd49c18c41604cac12461cfeb635063aa028afab5
all runs: crashed: general protection fault in nft_rhash_insert
revisions tested: 2, total time: 24m35.463871963s (build: 17m59.288236679s, test: 6m8.558732725s)
the crash still happens on HEAD
commit msg: Linux 4.19.114
crash: general protection fault in nft_rhash_insert
kasan: CONFIG_KASAN_INLINE enabled
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
kasan: GPF could be caused by NULL-ptr deref or user memory access
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready
general protection fault: 0000 [#1] PREEMPT SMP KASAN
batman_adv: batadv0: Interface activated: batadv_slave_1
CPU: 1 PID: 7812 Comm: syz-executor.4 Not tainted 4.19.114-syzkaller #0
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
RIP: 0010:nft_rhash_insert+0x87/0xe60 net/netfilter/nft_set_hash.c:166
Code: 4c 89 b5 60 ff ff ff c7 01 f1 f1 f1 f1 c7 41 04 00 00 00 f2 65 48 8b 0c 25 28 00 00 00 48 89 4d d0 31 c9 48 89 f9 48 c1 e9 03 <80> 3c 01 00 0f 85 96 0b 00 00 48 8b 42 40 49 8d bd c4 18 00 00 49
RSP: 0018:ffff888083caf038 EFLAGS: 00010203
RAX: dffffc0000000000 RBX: ffff888083caf168 RCX: 03fffffffe248e0e
RDX: 1ffffffff1247036 RSI: ffff888083caf168 RDI: 1ffffffff1247076
RBP: ffff888083caf120 R08: dffffc0000000000 R09: 0000000000000001
R10: ffffed1010795e3e R11: ffff888083caf1f7 R12: ffff888083caf0f8
R13: ffff888083caf1c8 R14: 1ffff11010795e13 R15: ffff888083caf228
FS:  00007f664dea7700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000758080 CR3: 000000008e536000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 nfnetlink_parse_nat net/netfilter/nf_nat_core.c:847 [inline]
 nfnetlink_parse_nat_setup+0x1ee/0x340 net/netfilter/nf_nat_core.c:884
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
 ctnetlink_parse_nat_setup+0x7c/0x430 net/netfilter/nf_conntrack_netlink.c:1521
 ctnetlink_setup_nat net/netfilter/nf_conntrack_netlink.c:1596 [inline]
 ctnetlink_create_conntrack+0x3be/0xfa0 net/netfilter/nf_conntrack_netlink.c:1984
 ctnetlink_new_conntrack+0x46c/0xe10 net/netfilter/nf_conntrack_netlink.c:2114
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
 nfnetlink_rcv_msg+0x942/0xc05 net/netfilter/nfnetlink.c:228
 netlink_rcv_skb+0x142/0x390 net/netlink/af_netlink.c:2455
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3e) already exists on: batadv_slave_1
 nfnetlink_rcv+0x163/0x3b0 net/netfilter/nfnetlink.c:560
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x443/0x650 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x765/0xc40 net/netlink/af_netlink.c:1909
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready
batman_adv: batadv0: Interface activated: batadv_slave_1
device veth0_macvtap entered promiscuous mode
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xb5/0xf0 net/socket.c:632
 ___sys_sendmsg+0x647/0x950 net/socket.c:2115
IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready
device veth1_macvtap entered promiscuous mode
IPv6: ADDRCONF(NETDEV_UP): macsec0: link is not ready
 __sys_sendmsg+0xd9/0x180 net/socket.c:2153
 __do_sys_sendmsg net/socket.c:2162 [inline]
 __se_sys_sendmsg net/socket.c:2160 [inline]
 __x64_sys_sendmsg+0x73/0xb0 net/socket.c:2160
 do_syscall_64+0xd0/0x4e0 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready
RIP: 0033:0x45b399
IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready
Code: ad b6 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 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f664dea6c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f664dea76d4 RCX: 000000000045b399
RDX: 0000000000000000 RSI: 0000000020000640 RDI: 0000000000000003
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000942 R14: 00000000004caa57 R15: 000000000075bf2c
Modules linked in:
---[ end trace 494afd1bf93ff08c ]---
RIP: 0010:nft_rhash_insert+0x87/0xe60 net/netfilter/nft_set_hash.c:166
Code: 4c 89 b5 60 ff ff ff c7 01 f1 f1 f1 f1 c7 41 04 00 00 00 f2 65 48 8b 0c 25 28 00 00 00 48 89 4d d0 31 c9 48 89 f9 48 c1 e9 03 <80> 3c 01 00 0f 85 96 0b 00 00 48 8b 42 40 49 8d bd c4 18 00 00 49
IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready
RSP: 0018:ffff888083caf038 EFLAGS: 00010203
IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready
RAX: dffffc0000000000 RBX: ffff888083caf168 RCX: 03fffffffe248e0e
IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready
RDX: 1ffffffff1247036 RSI: ffff888083caf168 RDI: 1ffffffff1247076
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
RBP: ffff888083caf120 R08: dffffc0000000000 R09: 0000000000000001
IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready
R10: ffffed1010795e3e R11: ffff888083caf1f7 R12: ffff888083caf0f8
IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready
R13: ffff888083caf1c8 R14: 1ffff11010795e13 R15: ffff888083caf228
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
FS:  00007f664dea7700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
CR2: 00007fffced4afd8 CR3: 000000008e536000 CR4: 00000000001406e0
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
batman_adv: It is strongly recommended to keep mac addresses unique to avoid problems!
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
batman_adv: The newly added mac address (aa:aa:aa:aa:aa:3d) already exists on: batadv_slave_0