==================================================================
BUG: KASAN: use-after-free in memcpy include/linux/fortify-string.h:191 [inline]
BUG: KASAN: use-after-free in page_to_skb+0x5cf/0xb70 drivers/net/virtio_net.c:480
Read of size 12 at addr ffff888027327800 by task ksoftirqd/0/13

CPU: 0 PID: 13 Comm: ksoftirqd/0 Not tainted 5.12.0-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+0x141/0x1d7 lib/dump_stack.c:120
 print_address_description.constprop.0.cold+0x5b/0x2f8 mm/kasan/report.c:232
 __kasan_report mm/kasan/report.c:399 [inline]
 kasan_report.cold+0x7c/0xd8 mm/kasan/report.c:416
 check_region_inline mm/kasan/generic.c:180 [inline]
 kasan_check_range+0x13d/0x180 mm/kasan/generic.c:186
 memcpy+0x20/0x60 mm/kasan/shadow.c:65
 memcpy include/linux/fortify-string.h:191 [inline]
 page_to_skb+0x5cf/0xb70 drivers/net/virtio_net.c:480
 receive_mergeable drivers/net/virtio_net.c:1009 [inline]
 receive_buf+0x2b82/0x6220 drivers/net/virtio_net.c:1119
 virtnet_receive drivers/net/virtio_net.c:1411 [inline]
 virtnet_poll+0x568/0x10b0 drivers/net/virtio_net.c:1516
 __napi_poll+0xaf/0x440 net/core/dev.c:6962
 napi_poll net/core/dev.c:7029 [inline]
 net_rx_action+0x801/0xb40 net/core/dev.c:7116
 __do_softirq+0x29b/0x9f6 kernel/softirq.c:345
 run_ksoftirqd kernel/softirq.c:652 [inline]
 run_ksoftirqd+0x2d/0x60 kernel/softirq.c:644
 smpboot_thread_fn+0x655/0x9e0 kernel/smpboot.c:165
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294

general protection fault, probably for non-canonical address 0xdead000000000400: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 13 Comm: ksoftirqd/0 Not tainted 5.12.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:nearest_obj include/linux/slub_def.h:169 [inline]
RIP: 0010:print_address_description.constprop.0.cold+0xbf/0x2f8 mm/kasan/report.c:237
Code: 00 48 8b 00 f6 c4 02 0f 84 71 ff ff ff 48 8b 5d 18 b9 0b 00 00 00 b8 11 ff ff 01 48 c1 e1 29 48 c1 e0 27 48 01 e9 48 c1 f9 06 <8b> 73 18 48 c1 e1 0c 48 01 c1 4c 89 e0 48 29 c8 48 99 48 f7 fe 0f
RSP: 0018:ffffc90000d27810 EFLAGS: 00010006
RAX: ffff888000000000 RBX: dead000000000400 RCX: 0000000000027327
RDX: ffffea00009cc801 RSI: ffffffff815c5205 RDI: fffff520001a4ef4
RBP: ffffea00009cc9c0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815bdf9e R11: 0000000000000000 R12: ffff888027327800
R13: ffffffff84bb8def R14: ffffffff84bb8def R15: ffff88801ab66c00
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffff40afd0 CR3: 0000000013a05000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __kasan_report mm/kasan/report.c:399 [inline]
 kasan_report.cold+0x7c/0xd8 mm/kasan/report.c:416
 check_region_inline mm/kasan/generic.c:180 [inline]
 kasan_check_range+0x13d/0x180 mm/kasan/generic.c:186
 memcpy+0x20/0x60 mm/kasan/shadow.c:65
 memcpy include/linux/fortify-string.h:191 [inline]
 page_to_skb+0x5cf/0xb70 drivers/net/virtio_net.c:480
 receive_mergeable drivers/net/virtio_net.c:1009 [inline]
 receive_buf+0x2b82/0x6220 drivers/net/virtio_net.c:1119
 virtnet_receive drivers/net/virtio_net.c:1411 [inline]
 virtnet_poll+0x568/0x10b0 drivers/net/virtio_net.c:1516
 __napi_poll+0xaf/0x440 net/core/dev.c:6962
 napi_poll net/core/dev.c:7029 [inline]
 net_rx_action+0x801/0xb40 net/core/dev.c:7116
 __do_softirq+0x29b/0x9f6 kernel/softirq.c:345
 run_ksoftirqd kernel/softirq.c:652 [inline]
 run_ksoftirqd+0x2d/0x60 kernel/softirq.c:644
 smpboot_thread_fn+0x655/0x9e0 kernel/smpboot.c:165
 kthread+0x3b1/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
---[ end trace a250c855b85ab482 ]---
RIP: 0010:nearest_obj include/linux/slub_def.h:169 [inline]
RIP: 0010:print_address_description.constprop.0.cold+0xbf/0x2f8 mm/kasan/report.c:237
Code: 00 48 8b 00 f6 c4 02 0f 84 71 ff ff ff 48 8b 5d 18 b9 0b 00 00 00 b8 11 ff ff 01 48 c1 e1 29 48 c1 e0 27 48 01 e9 48 c1 f9 06 <8b> 73 18 48 c1 e1 0c 48 01 c1 4c 89 e0 48 29 c8 48 99 48 f7 fe 0f
RSP: 0018:ffffc90000d27810 EFLAGS: 00010006
RAX: ffff888000000000 RBX: dead000000000400 RCX: 0000000000027327
RDX: ffffea00009cc801 RSI: ffffffff815c5205 RDI: fffff520001a4ef4
RBP: ffffea00009cc9c0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffff815bdf9e R11: 0000000000000000 R12: ffff888027327800
R13: ffffffff84bb8def R14: ffffffff84bb8def R15: ffff88801ab66c00
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fffff40afd0 CR3: 0000000013a05000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400