list_del corruption. prev->next should be ffff88019024dea0, but was ffff88018ad3e1a0 ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:53! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 9458 Comm: syz-executor3 Not tainted 4.19.0-rc4-next-20180921+ #77 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__list_del_entry_valid.cold.1+0x48/0x58 lib/list_debug.c:51 Code: dd 64 88 e8 76 6d d3 fd 0f 0b 48 89 de 48 c7 c7 60 de 64 88 e8 65 6d d3 fd 0f 0b 48 89 de 48 c7 c7 00 de 64 88 e8 54 6d d3 fd <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 41 57 RSP: 0018:ffff8801dac07c68 EFLAGS: 00010086 RAX: 0000000000000054 RBX: ffff88019024dea0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8163cff5 RDI: 0000000000000005 RBP: ffff8801dac07c80 R08: ffff880191920240 R09: ffffed003b585008 R10: ffffed003b585008 R11: ffff8801dac28047 R12: ffff88018ad25fe0 R13: ffff8801dac1d130 R14: ffff88019024de78 R15: ffff88019024dea0 FS: 00007f0e3d1cc700(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b31d22000 CR3: 00000001bed58000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_del_entry include/linux/list.h:117 [inline] list_del include/linux/list.h:125 [inline] __loaded_vmcs_clear+0x16c/0x690 arch/x86/kvm/vmx.c:2199 flush_smp_call_function_queue+0x1d2/0x640 kernel/smp.c:243 generic_smp_call_function_single_interrupt+0x13/0x2b kernel/smp.c:192 smp_call_function_single_interrupt+0x12f/0x640 arch/x86/kernel/smp.c:296 call_function_single_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:826 RIP: 0010:__read_once_size include/linux/compiler.h:188 [inline] RIP: 0010:__disk_get_part+0x97/0x320 block/genhd.c:99 Code: 40 0c 00 f2 f2 f2 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 e8 39 f1 ff fd 49 8d 7e 40 48 89 f8 48 c1 e8 03 42 80 3c 38 00 <0f> 85 5a 02 00 00 4d 8d 7d 80 4d 8b 76 40 48 b8 00 00 00 00 00 fc RSP: 0018:ffff8801cc84e5a8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff04 RAX: 1ffff100397ce8a8 RBX: 1ffff10039909cb5 RCX: ffffc9000465a000 RDX: 0000000000040000 RSI: ffffffff837d5ff7 RDI: ffff8801cbe74540 RBP: ffff8801cc84e670 R08: ffff880191920240 R09: ffffed003b585b57 R10: ffffed003b585b57 R11: ffff8801dac2dabb R12: 0000000000000001 R13: ffff8801cc84e648 R14: ffff8801cbe74500 R15: dffffc0000000000 blk_partition_remap block/blk-core.c:2218 [inline] generic_make_request_checks+0xfb9/0x26b0 block/blk-core.c:2274 generic_make_request+0x2bd/0x15a0 block/blk-core.c:2401 submit_bio+0xba/0x460 block/blk-core.c:2566 ext4_io_submit+0x197/0x230 fs/ext4/page-io.c:356 ext4_writepages+0x1581/0x4100 fs/ext4/inode.c:2809 do_writepages+0x9a/0x1a0 mm/page-writeback.c:2340 __filemap_fdatawrite_range+0x364/0x4a0 mm/filemap.c:447 file_write_and_wait_range+0x98/0x100 mm/filemap.c:755 ext4_sync_file+0x2ef/0x1500 fs/ext4/fsync.c:128 vfs_fsync_range+0x140/0x220 fs/sync.c:197 generic_write_sync include/linux/fs.h:2755 [inline] ext4_file_write_iter+0x692/0x1420 fs/ext4/file.c:270 call_write_iter include/linux/fs.h:1825 [inline] do_iter_readv_writev+0x8b0/0xa80 fs/read_write.c:680 do_iter_write+0x185/0x5f0 fs/read_write.c:959 vfs_iter_write+0x77/0xb0 fs/read_write.c:972 iter_file_splice_write+0x90d/0x1050 fs/splice.c:750 do_splice_from fs/splice.c:852 [inline] direct_splice_actor+0x128/0x190 fs/splice.c:1019 splice_direct_to_actor+0x318/0x8f0 fs/splice.c:974 do_splice_direct+0x2d4/0x420 fs/splice.c:1062 do_sendfile+0x62a/0xe20 fs/read_write.c:1440 __do_sys_sendfile64 fs/read_write.c:1495 [inline] __se_sys_sendfile64 fs/read_write.c:1487 [inline] __x64_sys_sendfile64+0x15d/0x250 fs/read_write.c:1487 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457679 Code: 1d b4 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 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f0e3d1cbc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f0e3d1cc6d4 RCX: 0000000000457679 RDX: 00000000200000c0 RSI: 0000000000000007 RDI: 0000000000000007 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 00008080fffffffe R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004d50d0 R14: 00000000004c3512 R15: 0000000000000000 Modules linked in: ---[ end trace b0e59116f7e297d1 ]--- RIP: 0010:__list_del_entry_valid.cold.1+0x48/0x58 lib/list_debug.c:51 Code: dd 64 88 e8 76 6d d3 fd 0f 0b 48 89 de 48 c7 c7 60 de 64 88 e8 65 6d d3 fd 0f 0b 48 89 de 48 c7 c7 00 de 64 88 e8 54 6d d3 fd <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 48 89 e5 41 57 RSP: 0018:ffff8801dac07c68 EFLAGS: 00010086 RAX: 0000000000000054 RBX: ffff88019024dea0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8163cff5 RDI: 0000000000000005 RBP: ffff8801dac07c80 R08: ffff880191920240 R09: ffffed003b585008 R10: ffffed003b585008 R11: ffff8801dac28047 R12: ffff88018ad25fe0 R13: ffff8801dac1d130 R14: ffff88019024de78 R15: ffff88019024dea0 FS: 00007f0e3d1cc700(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b31d22000 CR3: 00000001bed58000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400