[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.159' (ECDSA) to the list of known hosts. 2020/08/05 20:53:16 fuzzer started 2020/08/05 20:53:16 connecting to host at 10.128.0.105:39889 2020/08/05 20:53:16 checking machine... 2020/08/05 20:53:16 checking revisions... 2020/08/05 20:53:16 testing simple program... syzkaller login: [ 36.484147][ T8721] IPVS: ftp: loaded support on port[0] = 21 2020/08/05 20:53:16 building call list... [ 36.594364][ T8746] ------------[ cut here ]------------ [ 36.599987][ T8746] WARNING: CPU: 0 PID: 8746 at arch/x86/mm/tlb.c:936 flush_tlb_mm_range+0x182/0x1a0 [ 36.609464][ T8746] Kernel panic - not syncing: panic_on_warn set ... [ 36.616054][ T8746] CPU: 0 PID: 8746 Comm: systemd-udevd Not tainted 5.8.0-syzkaller #0 [ 36.624191][ T8746] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.634232][ T8746] Call Trace: [ 36.637521][ T8746] dump_stack+0x16e/0x25d [ 36.641863][ T8746] panic+0x20c/0x69a [ 36.645808][ T8746] ? flush_tlb_mm_range+0x182/0x1a0 [ 36.651001][ T8746] __warn+0x211/0x240 [ 36.654982][ T8746] ? flush_tlb_mm_range+0x182/0x1a0 [ 36.660169][ T8746] report_bug+0x153/0x1d0 [ 36.664622][ T8746] handle_bug+0x4d/0x90 [ 36.668767][ T8746] exc_invalid_op+0x16/0x70 [ 36.673266][ T8746] asm_exc_invalid_op+0x12/0x20 [ 36.678208][ T8746] RIP: 0010:flush_tlb_mm_range+0x182/0x1a0 [ 36.684052][ T8746] Code: 01 00 00 00 e8 5f 00 16 00 65 8b 05 b4 1f e0 7e 85 c0 74 0f 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 07 00 df ff eb ea <0f> 0b 48 83 3d c4 47 ea 06 00 0f 85 5b ff ff ff 0f 0b 0f 0b 0f 0b [ 36.703655][ T8746] RSP: 0000:ffffc90000e17c00 EFLAGS: 00010246 [ 36.709715][ T8746] RAX: 0000000000000000 RBX: ffff888124d932c0 RCX: ffff88812c02ce40 [ 36.717676][ T8746] RDX: 00007fff58e4b000 RSI: 0000000000000002 RDI: 0000000000000000 [ 36.725666][ T8746] RBP: 00007fff58e4b000 R08: 0000000000000000 R09: 000088811fad810f [ 36.733632][ T8746] R10: 0000ffffffffffff R11: 0000000000000000 R12: 0000000000000000 [ 36.741595][ T8746] R13: 000000000000000c R14: 00007fff58e4a000 R15: 0000000000000006 [ 36.749676][ T8746] ptep_clear_flush+0xb3/0xd0 [ 36.754342][ T8746] wp_page_copy+0x7b0/0x1360 [ 36.758922][ T8746] ? do_wp_page+0x9d6/0xd40 [ 36.763424][ T8746] do_wp_page+0x9de/0xd40 [ 36.767750][ T8746] handle_mm_fault+0x173d/0x1980 [ 36.772705][ T8746] do_user_addr_fault+0x3a0/0x820 [ 36.777732][ T8746] exc_page_fault+0xbf/0x210 [ 36.782349][ T8746] ? asm_exc_page_fault+0x8/0x30 [ 36.787281][ T8746] asm_exc_page_fault+0x1e/0x30 [ 36.792120][ T8746] RIP: 0033:0x558fe5b6fb56 [ 36.796547][ T8746] Code: 00 00 0f 85 56 01 00 00 48 81 c4 10 04 00 00 5b 5d 41 5c 41 5d 41 5e c3 66 90 66 2e 0f 1f 84 00 00 00 00 00 48 89 ee 48 89 df 75 e7 fb ff 85 c0 0f 94 c0 84 c0 74 ac 31 c0 41 80 7c 24 01 01 [ 36.816145][ T8746] RSP: 002b:00007fff58e4ad60 EFLAGS: 00010217 [ 36.822202][ T8746] RAX: 0000558fe5b6fb50 RBX: 0000558fe761d9bb RCX: 0000000000000000 [ 36.830168][ T8746] RDX: 0000558fe5b80cb8 RSI: 0000558fe7614400 RDI: 0000558fe761d9bb [ 36.838128][ T8746] RBP: 0000558fe7614400 R08: 378c0fc04d2b3361 R09: 0000000000000138 [ 36.846158][ T8746] R10: 0000558fe5b70d0c R11: 0000000000000297 R12: 0000558fe760d16c [ 36.854144][ T8746] R13: 0000558fe761bd50 R14: 0000000000000003 R15: 0000558fe7606bb0 [ 36.863355][ T8746] Kernel Offset: disabled [ 36.867703][ T8746] Rebooting in 86400 seconds..