------------[ cut here ]------------
kernel BUG at fs/buffer.c:3069!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 10935 Comm: syz-executor.0 Not tainted 5.8.0-rc3-next-20200701-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:submit_bh_wbc+0x6f3/0x8e0 fs/buffer.c:3069
Code: b0 e5 ff f0 80 63 01 fb e9 ca fa ff ff e8 15 48 a6 ff 41 81 cc 00 10 00 00 e9 4e fe ff ff e8 04 48 a6 ff 0f 0b e8 fd 47 a6 ff <0f> 0b e8 f6 47 a6 ff 0f 0b e8 ef 47 a6 ff 0f 0b e8 e8 47 a6 ff 0f
RSP: 0018:ffffc90003a37bf0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff8880768dd040 RCX: ffffffff81cd9d26
RDX: ffff8880948ac480 RSI: ffffffff81cda373 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000000 R09: ffff8880768dd047
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000008
FS:  00000000024d0940(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f755f139000 CR3: 000000009dcb3000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 submit_bh fs/buffer.c:3116 [inline]
 __bread_slow fs/buffer.c:1247 [inline]
 __bread_gfp+0x175/0x3b0 fs/buffer.c:1440
 sb_bread include/linux/buffer_head.h:301 [inline]
 minix_fill_super+0x934/0x1a90 fs/minix/inode.c:250
 mount_bdev+0x2fc/0x3b0 fs/super.c:1428
 legacy_get_tree+0x105/0x220 fs/fs_context.c:592
 vfs_get_tree+0x89/0x2f0 fs/super.c:1558
 do_new_mount fs/namespace.c:2911 [inline]
 do_mount+0x14c5/0x1df0 fs/namespace.c:3237
 __do_sys_mount fs/namespace.c:3447 [inline]
 __se_sys_mount fs/namespace.c:3424 [inline]
 __x64_sys_mount+0x18f/0x230 fs/namespace.c:3424
 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:359
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45f57a
Code: Bad RIP value.
RSP: 002b:00007ffd73a41a58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 000000000050a2a0 RCX: 000000000045f57a
RDX: 00007ffd73a41ad0 RSI: 0000000020000080 RDI: 00007ffd73a41af0
RBP: 000000000078bf00 R08: 00007ffd73a41b30 R09: 00007ffd73a41ad0
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000c31 R14: 00000000004ce829 R15: 00000000024d0914
Modules linked in:
---[ end trace 5f5a1c9673859f23 ]---
RIP: 0010:submit_bh_wbc+0x6f3/0x8e0 fs/buffer.c:3069
Code: b0 e5 ff f0 80 63 01 fb e9 ca fa ff ff e8 15 48 a6 ff 41 81 cc 00 10 00 00 e9 4e fe ff ff e8 04 48 a6 ff 0f 0b e8 fd 47 a6 ff <0f> 0b e8 f6 47 a6 ff 0f 0b e8 ef 47 a6 ff 0f 0b e8 e8 47 a6 ff 0f
RSP: 0018:ffffc90003a37bf0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff8880768dd040 RCX: ffffffff81cd9d26
RDX: ffff8880948ac480 RSI: ffffffff81cda373 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000000 R09: ffff8880768dd047
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000008
FS:  00000000024d0940(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f058eb67008 CR3: 000000009dcb3000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400