[ 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 '10.128.0.213' (ECDSA) to the list of known hosts. 2020/08/05 01:50:21 fuzzer started 2020/08/05 01:50:21 connecting to host at 10.128.0.105:37803 2020/08/05 01:50:21 checking machine... 2020/08/05 01:50:21 checking revisions... 2020/08/05 01:50:21 testing simple program... syzkaller login: [ 34.355645][ T8717] IPVS: ftp: loaded support on port[0] = 21 [ 34.435977][ T5077] ------------[ cut here ]------------ [ 34.441806][ T5077] WARNING: CPU: 1 PID: 5077 at arch/x86/mm/tlb.c:936 flush_tlb_mm_range+0x182/0x1a0 [ 34.451253][ T5077] Kernel panic - not syncing: panic_on_warn set ... [ 34.462965][ T5077] CPU: 1 PID: 5077 Comm: systemd-udevd Not tainted 5.8.0-syzkaller #0 [ 34.471908][ T5077] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.481950][ T5077] Call Trace: [ 34.485247][ T5077] dump_stack+0x16e/0x25d [ 34.489651][ T5077] panic+0x20c/0x69a [ 34.493542][ T5077] ? flush_tlb_mm_range+0x182/0x1a0 [ 34.498727][ T5077] __warn+0x211/0x240 [ 34.502811][ T5077] ? flush_tlb_mm_range+0x182/0x1a0 [ 34.508003][ T5077] report_bug+0x153/0x1d0 [ 34.512339][ T5077] handle_bug+0x4d/0x90 [ 34.518843][ T5077] exc_invalid_op+0x16/0x70 [ 34.523344][ T5077] asm_exc_invalid_op+0x12/0x20 [ 34.528195][ T5077] RIP: 0010:flush_tlb_mm_range+0x182/0x1a0 [ 34.533998][ T5077] Code: 01 00 00 00 e8 5f 00 16 00 65 8b 05 b4 0f e0 7e 85 c0 74 0f 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 07 f0 de ff eb ea <0f> 0b 48 83 3d 84 3a ea 06 00 0f 85 5b ff ff ff 0f 0b 0f 0b 0f 0b [ 34.553848][ T5077] RSP: 0000:ffffc90000e23c08 EFLAGS: 00010246 [ 34.559906][ T5077] RAX: 0000000000000000 RBX: ffff888124284cc0 RCX: ffff88812c12ce40 [ 34.567993][ T5077] RDX: 00007f85bc6c4000 RSI: 0000000000000002 RDI: 0000000000000000 [ 34.576479][ T5077] RBP: 00007f85bc6c4000 R08: 0000000000000000 R09: 00008881240d0a6f 2020/08/05 01:50:21 building call list... [ 34.585148][ T5077] R10: 0000ffffffffffff R11: 0000000000000000 R12: 0000000000000000 [ 34.593218][ T5077] R13: 000000000000000c R14: 00007f85bc6c3000 R15: 0000000000000373 [ 34.601292][ T5077] ? flush_tlb_mm_range+0x7a/0x1a0 [ 34.606433][ T5077] ptep_clear_flush+0xb3/0xd0 [ 34.611106][ T5077] wp_page_copy+0x7b0/0x1360 [ 34.615782][ T5077] ? trace_lock_release+0x31/0xe0 [ 34.620802][ T5077] do_wp_page+0x9de/0xd40 [ 34.625132][ T5077] handle_mm_fault+0x173d/0x1980 [ 34.630185][ T5077] do_user_addr_fault+0x3a0/0x820 [ 34.635385][ T5077] exc_page_fault+0xbf/0x210 [ 34.639968][ T5077] ? asm_exc_page_fault+0x8/0x30 [ 34.644949][ T5077] asm_exc_page_fault+0x1e/0x30 [ 34.649787][ T5077] RIP: 0033:0x7f85bc39c1f7 [ 34.654192][ T5077] Code: 25 10 00 00 00 48 3b 15 6f 75 32 00 74 46 be 01 00 00 00 31 c0 83 3d 17 a5 32 00 00 74 0c f0 0f b1 35 4d 75 32 00 75 0b eb 23 <0f> b1 35 42 75 32 00 74 1a 48 8d 3d 39 75 32 00 48 81 ec 80 00 00 [ 34.673946][ T5077] RSP: 002b:00007ffc677521c0 EFLAGS: 00010246 [ 34.680008][ T5077] RAX: 0000000000000000 RBX: 00005622f70bf120 RCX: 00005622f70bf210 [ 34.687970][ T5077] RDX: 00007f85bd5908c0 RSI: 0000000000000001 RDI: 00007ffc677521c0 [ 34.695983][ T5077] RBP: 0000000000000001 R08: 00007f85bc6bdf00 R09: 0000000000000230 [ 34.703950][ T5077] R10: b8a2bbf99842869b R11: 00007f85bc485184 R12: 00005622f58cc68a [ 34.711918][ T5077] R13: 0000000000000001 R14: 00005622f70d1260 R15: 00007ffc677523c0 [ 34.722030][ T5077] Kernel Offset: disabled [ 34.726586][ T5077] Rebooting in 86400 seconds..