=====================================================
BUG: KMSAN: uninit-value in ip6_parse_tlv+0xa3b/0xf80 net/ipv6/exthdrs.c:156
CPU: 0 PID: 19095 Comm: syz-executor.5 Not tainted 5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:79 [inline]
dump_stack+0x21c/0x280 lib/dump_stack.c:120
kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
__msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
ip6_parse_tlv+0xa3b/0xf80 net/ipv6/exthdrs.c:156
ipv6_destopt_rcv+0x630/0xe80 net/ipv6/exthdrs.c:308
ip6_protocol_deliver_rcu+0x1402/0x25e0 net/ipv6/ip6_input.c:433
ip6_input_finish net/ipv6/ip6_input.c:474 [inline]
NF_HOOK include/linux/netfilter.h:301 [inline]
ip6_input+0x12b/0x390 net/ipv6/ip6_input.c:483
ip6_mc_input+0xc77/0x12f0 net/ipv6/ip6_input.c:577
dst_input include/net/dst.h:447 [inline]
ip6_rcv_finish+0x5fc/0x7f0 net/ipv6/ip6_input.c:76
NF_HOOK include/linux/netfilter.h:301 [inline]
ipv6_rcv+0x1d1/0x460 net/ipv6/ip6_input.c:307
__netif_receive_skb_one_core net/core/dev.c:5323 [inline]
__netif_receive_skb+0x1ec/0x640 net/core/dev.c:5437
process_backlog+0x517/0xbd0 net/core/dev.c:6328
napi_poll+0x428/0x15c0 net/core/dev.c:6806
net_rx_action+0x34c/0xd30 net/core/dev.c:6889
__do_softirq+0x1b9/0x715 kernel/softirq.c:343
asm_call_irq_on_stack+0xf/0x20
__run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
do_softirq_own_stack+0x6e/0x90 arch/x86/kernel/irq_64.c:77
do_softirq+0xed/0x150 kernel/softirq.c:246
netif_rx_ni+0x90/0x2c0 net/core/dev.c:4847
dev_loopback_xmit+0x5ad/0x7b0 net/core/dev.c:3864
NF_HOOK include/linux/netfilter.h:301 [inline]
ip6_finish_output2+0x695/0x2a40 net/ipv6/ip6_output.c:81
__ip6_finish_output+0xe04/0xee0 net/ipv6/ip6_output.c:182
ip6_finish_output+0x329/0x480 net/ipv6/ip6_output.c:192
NF_HOOK_COND include/linux/netfilter.h:290 [inline]
ip6_output+0x4a4/0x7f0 net/ipv6/ip6_output.c:215
dst_output include/net/dst.h:441 [inline]
ip6_local_out+0x17b/0x1e0 net/ipv6/output_core.c:179
ip6_send_skb net/ipv6/ip6_output.c:1904 [inline]
ip6_push_pending_frames+0x243/0x570 net/ipv6/ip6_output.c:1924
rawv6_push_pending_frames net/ipv6/raw.c:613 [inline]
rawv6_sendmsg+0x40ea/0x46a0 net/ipv6/raw.c:956
inet_sendmsg+0x15b/0x1d0 net/ipv4/af_inet.c:817
sock_sendmsg_nosec net/socket.c:652 [inline]
sock_sendmsg net/socket.c:672 [inline]
____sys_sendmsg+0xcfc/0x12f0 net/socket.c:2345
___sys_sendmsg net/socket.c:2399 [inline]
__sys_sendmmsg+0xa57/0x1010 net/socket.c:2489
__do_sys_sendmmsg net/socket.c:2518 [inline]
__se_sys_sendmmsg+0xbd/0xe0 net/socket.c:2515
__x64_sys_sendmmsg+0x56/0x70 net/socket.c:2515
do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x466459
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe003b7c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459
RDX: 0000000000000001 RSI: 00000000200068c0 RDI: 0000000000000003
RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 0000000000a9fb1f R14: 00007fe003b7c300 R15: 0000000000022000
Uninit was created at:
kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline]
kmsan_internal_poison_shadow+0x5c/0xf0 mm/kmsan/kmsan.c:104
kmsan_slab_alloc+0x8d/0xe0 mm/kmsan/kmsan_hooks.c:76
slab_alloc_node mm/slub.c:2907 [inline]
__kmalloc_node_track_caller+0xa37/0x1430 mm/slub.c:4527
__kmalloc_reserve net/core/skbuff.c:142 [inline]
__alloc_skb+0x2f8/0xb30 net/core/skbuff.c:210
alloc_skb include/linux/skbuff.h:1099 [inline]
alloc_skb_with_frags+0x1f3/0xc10 net/core/skbuff.c:5894
sock_alloc_send_pskb+0xdc1/0xf90 net/core/sock.c:2348
sock_alloc_send_skb+0xca/0xe0 net/core/sock.c:2365
__ip6_append_data+0x553e/0x7260 net/ipv6/ip6_output.c:1620
ip6_append_data+0x44b/0x6e0 net/ipv6/ip6_output.c:1796
rawv6_sendmsg+0x2aea/0x46a0 net/ipv6/raw.c:949
inet_sendmsg+0x15b/0x1d0 net/ipv4/af_inet.c:817
sock_sendmsg_nosec net/socket.c:652 [inline]
sock_sendmsg net/socket.c:672 [inline]
____sys_sendmsg+0xcfc/0x12f0 net/socket.c:2345
___sys_sendmsg net/socket.c:2399 [inline]
__sys_sendmmsg+0xa57/0x1010 net/socket.c:2489
__do_sys_sendmmsg net/socket.c:2518 [inline]
__se_sys_sendmmsg+0xbd/0xe0 net/socket.c:2515
__x64_sys_sendmmsg+0x56/0x70 net/socket.c:2515
do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48
entry_SYSCALL_64_after_hwframe+0x44/0xa9
=====================================================
=====================================================
BUG: KMSAN: uninit-value in ip6_parse_tlv+0xa5b/0xf80 net/ipv6/exthdrs.c:162
CPU: 0 PID: 19095 Comm: syz-executor.5 Tainted: G B 5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:79 [inline]
dump_stack+0x21c/0x280 lib/dump_stack.c:120
kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
__msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
ip6_parse_tlv+0xa5b/0xf80 net/ipv6/exthdrs.c:162
ipv6_destopt_rcv+0x630/0xe80 net/ipv6/exthdrs.c:308
ip6_protocol_deliver_rcu+0x1402/0x25e0 net/ipv6/ip6_input.c:433
ip6_input_finish net/ipv6/ip6_input.c:474 [inline]
NF_HOOK include/linux/netfilter.h:301 [inline]
ip6_input+0x12b/0x390 net/ipv6/ip6_input.c:483
ip6_mc_input+0xc77/0x12f0 net/ipv6/ip6_input.c:577
dst_input include/net/dst.h:447 [inline]
ip6_rcv_finish+0x5fc/0x7f0 net/ipv6/ip6_input.c:76
NF_HOOK include/linux/netfilter.h:301 [inline]
ipv6_rcv+0x1d1/0x460 net/ipv6/ip6_input.c:307
__netif_receive_skb_one_core net/core/dev.c:5323 [inline]
__netif_receive_skb+0x1ec/0x640 net/core/dev.c:5437
process_backlog+0x517/0xbd0 net/core/dev.c:6328
napi_poll+0x428/0x15c0 net/core/dev.c:6806
net_rx_action+0x34c/0xd30 net/core/dev.c:6889
__do_softirq+0x1b9/0x715 kernel/softirq.c:343
asm_call_irq_on_stack+0xf/0x20
__run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
do_softirq_own_stack+0x6e/0x90 arch/x86/kernel/irq_64.c:77
do_softirq+0xed/0x150 kernel/softirq.c:246
netif_rx_ni+0x90/0x2c0 net/core/dev.c:4847
dev_loopback_xmit+0x5ad/0x7b0 net/core/dev.c:3864
NF_HOOK include/linux/netfilter.h:301 [inline]
ip6_finish_output2+0x695/0x2a40 net/ipv6/ip6_output.c:81
__ip6_finish_output+0xe04/0xee0 net/ipv6/ip6_output.c:182
ip6_finish_output+0x329/0x480 net/ipv6/ip6_output.c:192
NF_HOOK_COND include/linux/netfilter.h:290 [inline]
ip6_output+0x4a4/0x7f0 net/ipv6/ip6_output.c:215
dst_output include/net/dst.h:441 [inline]
ip6_local_out+0x17b/0x1e0 net/ipv6/output_core.c:179
ip6_send_skb net/ipv6/ip6_output.c:1904 [inline]
ip6_push_pending_frames+0x243/0x570 net/ipv6/ip6_output.c:1924
rawv6_push_pending_frames net/ipv6/raw.c:613 [inline]
rawv6_sendmsg+0x40ea/0x46a0 net/ipv6/raw.c:956
inet_sendmsg+0x15b/0x1d0 net/ipv4/af_inet.c:817
sock_sendmsg_nosec net/socket.c:652 [inline]
sock_sendmsg net/socket.c:672 [inline]
____sys_sendmsg+0xcfc/0x12f0 net/socket.c:2345
___sys_sendmsg net/socket.c:2399 [inline]
__sys_sendmmsg+0xa57/0x1010 net/socket.c:2489
__do_sys_sendmmsg net/socket.c:2518 [inline]
__se_sys_sendmmsg+0xbd/0xe0 net/socket.c:2515
__x64_sys_sendmmsg+0x56/0x70 net/socket.c:2515
do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x466459
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe003b7c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459
RDX: 0000000000000001 RSI: 00000000200068c0 RDI: 0000000000000003
RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 0000000000a9fb1f R14: 00007fe003b7c300 R15: 0000000000022000
Uninit was created at:
kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline]
kmsan_internal_poison_shadow+0x5c/0xf0 mm/kmsan/kmsan.c:104
kmsan_slab_alloc+0x8d/0xe0 mm/kmsan/kmsan_hooks.c:76
slab_alloc_node mm/slub.c:2907 [inline]
__kmalloc_node_track_caller+0xa37/0x1430 mm/slub.c:4527
__kmalloc_reserve net/core/skbuff.c:142 [inline]
__alloc_skb+0x2f8/0xb30 net/core/skbuff.c:210
alloc_skb include/linux/skbuff.h:1099 [inline]
alloc_skb_with_frags+0x1f3/0xc10 net/core/skbuff.c:5894
sock_alloc_send_pskb+0xdc1/0xf90 net/core/sock.c:2348
sock_alloc_send_skb+0xca/0xe0 net/core/sock.c:2365
__ip6_append_data+0x553e/0x7260 net/ipv6/ip6_output.c:1620
ip6_append_data+0x44b/0x6e0 net/ipv6/ip6_output.c:1796
rawv6_sendmsg+0x2aea/0x46a0 net/ipv6/raw.c:949
inet_sendmsg+0x15b/0x1d0 net/ipv4/af_inet.c:817
sock_sendmsg_nosec net/socket.c:652 [inline]
sock_sendmsg net/socket.c:672 [inline]
____sys_sendmsg+0xcfc/0x12f0 net/socket.c:2345
___sys_sendmsg net/socket.c:2399 [inline]
__sys_sendmmsg+0xa57/0x1010 net/socket.c:2489
__do_sys_sendmmsg net/socket.c:2518 [inline]
__se_sys_sendmmsg+0xbd/0xe0 net/socket.c:2515
__x64_sys_sendmmsg+0x56/0x70 net/socket.c:2515
do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48
entry_SYSCALL_64_after_hwframe+0x44/0xa9
=====================================================
=====================================================
BUG: KMSAN: uninit-value in ip6_parse_tlv+0xc61/0xf80 net/ipv6/exthdrs.c:137
CPU: 0 PID: 19095 Comm: syz-executor.5 Tainted: G B 5.11.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:79 [inline]
dump_stack+0x21c/0x280 lib/dump_stack.c:120
kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118
__msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
ip6_parse_tlv+0xc61/0xf80 net/ipv6/exthdrs.c:137
ipv6_destopt_rcv+0x630/0xe80 net/ipv6/exthdrs.c:308
ip6_protocol_deliver_rcu+0x1402/0x25e0 net/ipv6/ip6_input.c:433
ip6_input_finish net/ipv6/ip6_input.c:474 [inline]
NF_HOOK include/linux/netfilter.h:301 [inline]
ip6_input+0x12b/0x390 net/ipv6/ip6_input.c:483
ip6_mc_input+0xc77/0x12f0 net/ipv6/ip6_input.c:577
dst_input include/net/dst.h:447 [inline]
ip6_rcv_finish+0x5fc/0x7f0 net/ipv6/ip6_input.c:76
NF_HOOK include/linux/netfilter.h:301 [inline]
ipv6_rcv+0x1d1/0x460 net/ipv6/ip6_input.c:307
__netif_receive_skb_one_core net/core/dev.c:5323 [inline]
__netif_receive_skb+0x1ec/0x640 net/core/dev.c:5437
process_backlog+0x517/0xbd0 net/core/dev.c:6328
napi_poll+0x428/0x15c0 net/core/dev.c:6806
net_rx_action+0x34c/0xd30 net/core/dev.c:6889
__do_softirq+0x1b9/0x715 kernel/softirq.c:343
asm_call_irq_on_stack+0xf/0x20
__run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
do_softirq_own_stack+0x6e/0x90 arch/x86/kernel/irq_64.c:77
do_softirq+0xed/0x150 kernel/softirq.c:246
netif_rx_ni+0x90/0x2c0 net/core/dev.c:4847
dev_loopback_xmit+0x5ad/0x7b0 net/core/dev.c:3864
NF_HOOK include/linux/netfilter.h:301 [inline]
ip6_finish_output2+0x695/0x2a40 net/ipv6/ip6_output.c:81
__ip6_finish_output+0xe04/0xee0 net/ipv6/ip6_output.c:182
ip6_finish_output+0x329/0x480 net/ipv6/ip6_output.c:192
NF_HOOK_COND include/linux/netfilter.h:290 [inline]
ip6_output+0x4a4/0x7f0 net/ipv6/ip6_output.c:215
dst_output include/net/dst.h:441 [inline]
ip6_local_out+0x17b/0x1e0 net/ipv6/output_core.c:179
ip6_send_skb net/ipv6/ip6_output.c:1904 [inline]
ip6_push_pending_frames+0x243/0x570 net/ipv6/ip6_output.c:1924
rawv6_push_pending_frames net/ipv6/raw.c:613 [inline]
rawv6_sendmsg+0x40ea/0x46a0 net/ipv6/raw.c:956
inet_sendmsg+0x15b/0x1d0 net/ipv4/af_inet.c:817
sock_sendmsg_nosec net/socket.c:652 [inline]
sock_sendmsg net/socket.c:672 [inline]
____sys_sendmsg+0xcfc/0x12f0 net/socket.c:2345
___sys_sendmsg net/socket.c:2399 [inline]
__sys_sendmmsg+0xa57/0x1010 net/socket.c:2489
__do_sys_sendmmsg net/socket.c:2518 [inline]
__se_sys_sendmmsg+0xbd/0xe0 net/socket.c:2515
__x64_sys_sendmmsg+0x56/0x70 net/socket.c:2515
do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48
entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x466459
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe003b7c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459
RDX: 0000000000000001 RSI: 00000000200068c0 RDI: 0000000000000003
RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60
R13: 0000000000a9fb1f R14: 00007fe003b7c300 R15: 0000000000022000
Uninit was created at:
kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline]
kmsan_internal_poison_shadow+0x5c/0xf0 mm/kmsan/kmsan.c:104
kmsan_slab_alloc+0x8d/0xe0 mm/kmsan/kmsan_hooks.c:76
slab_alloc_node mm/slub.c:2907 [inline]
__kmalloc_node_track_caller+0xa37/0x1430 mm/slub.c:4527
__kmalloc_reserve net/core/skbuff.c:142 [inline]
__alloc_skb+0x2f8/0xb30 net/core/skbuff.c:210
alloc_skb include/linux/skbuff.h:1099 [inline]
alloc_skb_with_frags+0x1f3/0xc10 net/core/skbuff.c:5894
sock_alloc_send_pskb+0xdc1/0xf90 net/core/sock.c:2348
sock_alloc_send_skb+0xca/0xe0 net/core/sock.c:2365
__ip6_append_data+0x553e/0x7260 net/ipv6/ip6_output.c:1620
ip6_append_data+0x44b/0x6e0 net/ipv6/ip6_output.c:1796
rawv6_sendmsg+0x2aea/0x46a0 net/ipv6/raw.c:949
inet_sendmsg+0x15b/0x1d0 net/ipv4/af_inet.c:817
sock_sendmsg_nosec net/socket.c:652 [inline]
sock_sendmsg net/socket.c:672 [inline]
____sys_sendmsg+0xcfc/0x12f0 net/socket.c:2345
___sys_sendmsg net/socket.c:2399 [inline]
__sys_sendmmsg+0xa57/0x1010 net/socket.c:2489
__do_sys_sendmmsg net/socket.c:2518 [inline]
__se_sys_sendmmsg+0xbd/0xe0 net/socket.c:2515
__x64_sys_sendmmsg+0x56/0x70 net/socket.c:2515
do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48
entry_SYSCALL_64_after_hwframe+0x44/0xa9
=====================================================