general protection fault, probably for non-canonical address 0xdffffc3c1ffffd41: 0000 [#1] PREEMPT SMP KASAN KASAN: probably user-memory-access in range [0x000001e0ffffea08-0x000001e0ffffea0f] CPU: 0 PID: 8440 Comm: syz-fuzzer Not tainted 5.12.0-rc8-next-20210423-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:receive_mergeable drivers/net/virtio_net.c:865 [inline] RIP: 0010:receive_buf+0xc5c/0x6250 drivers/net/virtio_net.c:1122 Code: 48 89 9c 24 c8 00 00 00 44 89 a4 24 b8 00 00 00 48 8d 48 0a 48 b8 00 00 00 00 00 fc ff df 48 89 ca 48 89 4c 24 70 48 c1 ea 03 <0f> b6 14 02 48 89 c8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 ba RSP: 0018:ffffc90000007ad8 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 000000000000604e RCX: 000001e0ffffea0a RDX: 0000003c1ffffd41 RSI: ffffffff84c2a09d RDI: 0000000000000003 RBP: ffff888143296c00 R08: 000000000000001a R09: 0000000000000001 R10: ffffffff84c295d7 R11: 0000000000000000 R12: 000000000000022e R13: 000000000000000c R14: 0000000000000001 R15: ffff888143296c10 FS: 00000000018494b0(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c001d3b010 CR3: 00000000130b4000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: virtnet_receive drivers/net/virtio_net.c:1414 [inline] virtnet_poll+0x58a/0x1180 drivers/net/virtio_net.c:1521 __napi_poll+0xaf/0x440 net/core/dev.c:6966 napi_poll net/core/dev.c:7033 [inline] net_rx_action+0x801/0xb40 net/core/dev.c:7120 __do_softirq+0x29b/0x9fe kernel/softirq.c:559 invoke_softirq kernel/softirq.c:433 [inline] __irq_exit_rcu+0x136/0x200 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 common_interrupt+0xa4/0xd0 arch/x86/kernel/irq.c:240 asm_common_interrupt+0x1e/0x40 arch/x86/include/asm/idtentry.h:623 RIP: 0010:__syscall_enter_from_user_work kernel/entry/common.c:86 [inline] RIP: 0010:syscall_enter_from_user_mode+0x31/0x70 kernel/entry/common.c:107 Code: 89 fd 48 8b 7c 24 10 e8 3d f8 ff ff e9 2a 00 00 00 e9 2e 00 00 00 e8 3e e3 66 f8 e8 79 e1 66 f8 fb 65 48 8b 04 25 00 f0 01 00 <48> 8b 70 08 40 f6 c6 3f 75 1c 4c 89 e0 5d 41 5c c3 e9 1b 00 00 00 RSP: 0018:ffffc90000eeff28 EFLAGS: 00000202 RAX: ffff888019c0d580 RBX: 0000000000000000 RCX: 1ffffffff1b911b9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000eeff58 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff817b0ad8 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 do_syscall_64+0x1c/0xb0 arch/x86/entry/common.c:42 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4af19b Code: fb ff eb bd e8 a6 b6 fb ff e9 61 ff ff ff cc e8 9b 82 fb ff 48 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 RSP: 002b:000000c00032f828 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 000000c00001e800 RCX: 00000000004af19b RDX: 0000000000001000 RSI: 000000c000066000 RDI: 0000000000000006 RBP: 000000c00032f878 R08: 0000000000000001 R09: 0000000000000002 R10: 0000000000007d81 R11: 0000000000000212 R12: 0000000000007d7d R13: 0000000000000400 R14: 0000000000000020 R15: 0000000000000008 Modules linked in: ---[ end trace dc83dc58f42204c5 ]--- RIP: 0010:receive_mergeable drivers/net/virtio_net.c:865 [inline] RIP: 0010:receive_buf+0xc5c/0x6250 drivers/net/virtio_net.c:1122 Code: 48 89 9c 24 c8 00 00 00 44 89 a4 24 b8 00 00 00 48 8d 48 0a 48 b8 00 00 00 00 00 fc ff df 48 89 ca 48 89 4c 24 70 48 c1 ea 03 <0f> b6 14 02 48 89 c8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 ba RSP: 0018:ffffc90000007ad8 EFLAGS: 00010206 RAX: dffffc0000000000 RBX: 000000000000604e RCX: 000001e0ffffea0a RDX: 0000003c1ffffd41 RSI: ffffffff84c2a09d RDI: 0000000000000003 RBP: ffff888143296c00 R08: 000000000000001a R09: 0000000000000001 R10: ffffffff84c295d7 R11: 0000000000000000 R12: 000000000000022e R13: 000000000000000c R14: 0000000000000001 R15: ffff888143296c10 FS: 00000000018494b0(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c001d3b010 CR3: 00000000130b4000 CR4: 00000000001506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400