overlayfs: filesystem on './bus' not supported as upperdir ------------[ cut here ]------------ WARNING: CPU: 0 PID: 19718 at net/ipv4/route.c:1247 ip_rt_bug+0x31/0x130 net/ipv4/route.c:1247 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 19718 Comm: syz-executor.3 Not tainted 4.19.196-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 panic+0x26a/0x50e kernel/panic.c:186 __warn.cold+0x20/0x5a kernel/panic.c:541 report_bug+0x262/0x2b0 lib/bug.c:183 fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x1d7/0x310 arch/x86/kernel/traps.c:296 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:1038 RIP: 0010:ip_rt_bug+0x31/0x130 net/ipv4/route.c:1247 Code: ec 08 e8 32 7a 91 fa 0f 1f 44 00 00 e8 28 7a 91 fa e8 23 7a 91 fa 48 89 ef e8 9b 3c 9f ff 48 c7 c7 a0 78 55 89 e8 f5 d6 21 01 <0f> 0b 48 83 c4 08 31 c0 5b 5d c3 e8 ff 79 91 fa 48 8d 7d 10 48 b8 RSP: 0018:ffff8880ba007878 EFLAGS: 00010282 RAX: 0000000000000024 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000100 RSI: ffffffff814dfc91 RDI: ffffed1017400f01 RBP: ffff888091075040 R08: 0000000000000024 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff88809909de00 R13: ffff888091075040 R14: ffff888036e54c40 R15: ffff888091075098 dst_output include/net/dst.h:455 [inline] ip_local_out+0xaf/0x170 net/ipv4/ip_output.c:125 ip_send_skb net/ipv4/ip_output.c:1447 [inline] ip_push_pending_frames+0x8b/0x140 net/ipv4/ip_output.c:1467 icmp_push_reply+0x3bb/0x530 net/ipv4/icmp.c:398 __icmp_send+0x11d1/0x1520 net/ipv4/icmp.c:754 ipv4_send_dest_unreach net/ipv4/route.c:1227 [inline] ipv4_link_failure+0x5e8/0xa00 net/ipv4/route.c:1234 dst_link_failure include/net/dst.h:438 [inline] arp_error_report+0xc7/0x190 net/ipv4/arp.c:297 neigh_invalidate+0x22c/0x540 net/core/neighbour.c:900 neigh_timer_handler+0x9b2/0xc70 net/core/neighbour.c:986 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375 __run_timers kernel/time/timer.c:1696 [inline] run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709 __do_softirq+0x265/0x980 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x215/0x260 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:23 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:67 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0xd/0x50 kernel/kcov.c:101 Code: ff 4c 89 ef e8 54 ca 35 00 e9 23 fe ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 34 24 65 48 8b 04 25 80 df 01 00 <65> 8b 15 bc 5f 9f 7e 81 e2 00 01 1f 00 75 2b 8b 90 60 13 00 00 83 RSP: 0018:ffff8880a2117a20 EFLAGS: 00000213 ORIG_RAX: ffffffffffffff13 RAX: ffff88809139c080 RBX: 0000000000000010 RCX: ffffffff818c5d44 RDX: 00fff00000000000 RSI: ffffffff818c5d53 RDI: 0000000000000007 RBP: 00fff00000000000 R08: 0000000000000001 R09: ffffffffffffffff R10: 0000000000000007 R11: 00000000bd695255 R12: ffffea0001070300 R13: dffffc0000000000 R14: ffffea0001070300 R15: 0000000000000000 __read_once_size include/linux/compiler.h:261 [inline] compound_head include/linux/page-flags.h:142 [inline] PageSwapBacked include/linux/page-flags.h:295 [inline] mm_counter_file include/linux/mm.h:1639 [inline] mm_counter include/linux/mm.h:1648 [inline] copy_one_pte mm/memory.c:1054 [inline] copy_pte_range mm/memory.c:1114 [inline] copy_pmd_range mm/memory.c:1165 [inline] copy_pud_range mm/memory.c:1199 [inline] copy_p4d_range mm/memory.c:1221 [inline] copy_page_range+0x1193/0x2ff0 mm/memory.c:1283 dup_mmap kernel/fork.c:549 [inline] dup_mm kernel/fork.c:1284 [inline] copy_mm kernel/fork.c:1340 [inline] copy_process.part.0+0x5b22/0x8260 kernel/fork.c:1912 copy_process kernel/fork.c:1709 [inline] _do_fork+0x22f/0xf30 kernel/fork.c:2218 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x464bcb Code: ed 0f 85 60 01 00 00 64 4c 8b 0c 25 10 00 00 00 45 31 c0 4d 8d 91 d0 02 00 00 31 d2 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 89 00 00 00 41 89 c5 85 c0 0f 85 90 00 00 RSP: 002b:00007ffea1db53a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000464bcb RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 RBP: 0000000000000001 R08: 0000000000000000 R09: 00000000027ec400 R10: 00000000027ec6d0 R11: 0000000000000246 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffea1db5490 Kernel Offset: disabled Rebooting in 86400 seconds..