kernel msg: ebtables bug: please report to author: Entries_size never zero Kernel panic - not syncing: corrupted stack end detected inside scheduler CPU: 0 PID: 7126 Comm: syz-executor0 Not tainted 4.20.0 #386 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+0x1d3/0x2c6 lib/dump_stack.c:113 panic+0x2ad/0x55c kernel/panic.c:188 schedule_debug kernel/sched/core.c:3285 [inline] __schedule+0x1ec6/0x1ed0 kernel/sched/core.c:3394 preempt_schedule_irq+0x87/0x110 kernel/sched/core.c:3699 retint_kernel+0x1b/0x2d RIP: 0010:__read_once_size include/linux/compiler.h:191 [inline] RIP: 0010:shmem_unused_huge_count+0xab/0x120 mm/shmem.c:557 Code: 48 b8 00 00 00 00 00 fc ff df 49 8d bd 08 01 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 75 75 49 8d 7c 24 c0 49 8b 85 08 01 00 00 <48> ba 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 80 3c 11 00 75 RSP: 0000:ffff888184d839f0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff02 RAX: 0000000000000000 RBX: 1ffff110309b073f RCX: ffffc90005dd6000 RDX: 1ffff1103b34d839 RSI: ffffffff81a8d285 RDI: ffff888184d83a18 RBP: ffff888184d83a78 R08: ffff8881c2e10580 R09: ffffed103b5c5b5f R10: 0000000000000006 R11: ffff8881dae2dafb R12: ffff888184d83a58 R13: ffff8881d9a6c0c0 R14: dffffc0000000000 R15: ffff8881d9bcc6c0 super_cache_count+0xdc/0x2e0 fs/super.c:142 do_shrink_slab+0x1b1/0xd30 mm/vmscan.c:465 shrink_slab+0x389/0x8c0 mm/vmscan.c:706 shrink_node+0x431/0x16b0 mm/vmscan.c:2758 shrink_zones mm/vmscan.c:2987 [inline] do_try_to_free_pages+0x3df/0x1290 mm/vmscan.c:3049 try_to_free_pages+0x4d0/0xb90 mm/vmscan.c:3264 __perform_reclaim mm/page_alloc.c:3773 [inline] __alloc_pages_direct_reclaim mm/page_alloc.c:3795 [inline] __alloc_pages_slowpath+0xa48/0x2df0 mm/page_alloc.c:4185 __alloc_pages_nodemask+0xad8/0xea0 mm/page_alloc.c:4393 __alloc_pages include/linux/gfp.h:473 [inline] __alloc_pages_node include/linux/gfp.h:486 [inline] kmem_getpages mm/slab.c:1409 [inline] cache_grow_begin+0x91/0x8c0 mm/slab.c:2677 fallback_alloc+0x203/0x2e0 mm/slab.c:3219 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287 __do_cache_alloc mm/slab.c:3356 [inline] slab_alloc mm/slab.c:3384 [inline] kmem_cache_alloc+0x1f8/0x730 mm/slab.c:3552 mempool_alloc_slab+0x44/0x60 mm/mempool.c:505 mempool_alloc+0x193/0x4a0 mm/mempool.c:385 bvec_alloc+0x12a/0x2d0 block/bio.c:218 bio_alloc_bioset+0x47a/0x700 block/bio.c:509 bio_alloc include/linux/bio.h:393 [inline] mpage_alloc.isra.9+0x3d/0x270 fs/mpage.c:79 do_mpage_readpage+0x178b/0x24d0 fs/mpage.c:306 mpage_readpages+0x56c/0x950 fs/mpage.c:404 blkdev_readpages+0x2c/0x40 fs/block_dev.c:578 read_pages+0x13a/0x680 mm/readahead.c:123 __do_page_cache_readahead+0x499/0x810 mm/readahead.c:209 ra_submit mm/internal.h:66 [inline] do_sync_mmap_readahead mm/filemap.c:2371 [inline] filemap_fault+0xf4e/0x25f0 mm/filemap.c:2447 __do_fault+0x100/0x6b0 mm/memory.c:2996 do_read_fault mm/memory.c:3408 [inline] do_fault mm/memory.c:3534 [inline] handle_pte_fault mm/memory.c:3765 [inline] __handle_mm_fault+0x3956/0x5670 mm/memory.c:3889 handle_mm_fault+0x54f/0xc70 mm/memory.c:3926 do_user_addr_fault arch/x86/mm/fault.c:1423 [inline] __do_page_fault+0x5e8/0xe60 arch/x86/mm/fault.c:1489 do_page_fault+0xf2/0x7e0 arch/x86/mm/fault.c:1520 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1143 RIP: 0010:copy_user_generic_unrolled+0x9e/0xc0 arch/x86/lib/copy_user_64.S:75 Code: 48 8d 7f 40 ff c9 75 b6 89 d1 83 e2 07 c1 e9 03 74 12 4c 8b 06 4c 89 07 48 8d 76 08 48 8d 7f 08 ff c9 75 ee 21 d2 74 10 89 d1 <8a> 06 88 07 48 ff c6 48 ff c7 ff c9 75 f2 31 c0 0f 1f 00 c3 0f 1f RSP: 0018:ffff888184d865f0 EFLAGS: 00010202 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000002 RDX: 0000000000000002 RSI: 00000000200000f9 RDI: ffff888180b6c540 RBP: ffff888184d86628 R08: ffff8881c2e10580 R09: ffff8881c35561c0 R10: 00000000000014b1 R11: 0000000000000000 R12: 0000000000000002 R13: ffff888180b6c540 R14: 0000000020000000 R15: 0000000000000002 kvm_vcpu_read_guest_page arch/x86/kvm/../../../virt/kvm/kvm_main.c:1763 [inline] kvm_vcpu_read_guest+0x65/0xe0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:1795 read_emulate+0x2c/0x50 arch/x86/kvm/x86.c:5234 emulator_read_write_onepage+0x4cd/0xff0 arch/x86/kvm/x86.c:5309 emulator_read_write+0x1b7/0x5a0 arch/x86/kvm/x86.c:5364 emulator_read_emulated+0x3c/0x50 arch/x86/kvm/x86.c:5391 read_emulated arch/x86/kvm/emulate.c:1408 [inline] segmented_read+0x21e/0x360 arch/x86/kvm/emulate.c:1432 emulate_pop+0x239/0x3c0 arch/x86/kvm/emulate.c:1860 ? 0xffffffff81000000 em_pop_sreg+0xa8/0x260 arch/x86/kvm/emulate.c:1971 x86_emulate_insn+0x6b2/0x5020 arch/x86/kvm/emulate.c:5601 x86_emulate_instruction+0xd67/0x1ff0 arch/x86/kvm/x86.c:6369 kvm_mmu_page_fault+0x3e3/0x1c20 arch/x86/kvm/mmu.c:5351 handle_ept_misconfig+0x12e/0x590 arch/x86/kvm/vmx.c:7752 vmx_handle_exit+0x2f7/0x17d0 arch/x86/kvm/vmx.c:10632 vcpu_enter_guest+0x14b1/0x6490 arch/x86/kvm/x86.c:7813 vcpu_run arch/x86/kvm/x86.c:7876 [inline] kvm_arch_vcpu_ioctl_run+0x375/0x16e0 arch/x86/kvm/x86.c:8076 kvm_vcpu_ioctl+0x5c8/0x1150 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2596 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0x1de/0x1790 fs/ioctl.c:696 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457669 Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fd4eed76c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457669 RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd4eed776d4 R13: 00000000004c053c R14: 00000000004d15f0 R15: 00000000ffffffff Kernel Offset: disabled Rebooting in 86400 seconds..