------------[ cut here ]------------
kernel BUG at fs/buffer.c:3032!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 25692 Comm: syz-executor.0 Not tainted 5.4.18-syzkaller-00147-g0dba8e724663 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:submit_bh_wbc+0x776/0x7a0 fs/buffer.c:3032
Code: 4d c8 80 e1 07 80 c1 03 38 c1 0f 8c cb fe ff ff 48 8b 7d c8 e8 3b 1f ed ff e9 bd fe ff ff e8 51 1b bf ff 0f 0b e8 4a 1b bf ff <0f> 0b e8 43 1b bf ff 0f 0b e8 3c 1b bf ff 0f 0b e8 35 1b bf ff 0f
RSP: 0018:ffff8881c185f828 EFLAGS: 00010293
RAX: ffffffff8183bc36 RBX: 0000000000000000 RCX: ffff8881d395e740
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8881c185f8b8 R08: ffffffff8183b561 R09: ffffed103ad53127
R10: ffffed103ad53127 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8881d6a98930 R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f73ff561700(0000) GS:ffff8881dba00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000019719b8 CR3: 00000001cb42b005 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 submit_bh fs/buffer.c:3081 [inline]
 __bread_slow fs/buffer.c:1178 [inline]
 __bread_gfp+0x187/0x320 fs/buffer.c:1360
 sb_bread include/linux/buffer_head.h:307 [inline]
 fat_fill_super+0x1b93/0x5340 fs/fat/inode.c:1647
 vfat_fill_super+0x31/0x40 fs/fat/namei_vfat.c:1050
 mount_bdev+0x285/0x3a0 fs/super.c:1417
 vfat_mount+0x34/0x40 fs/fat/namei_vfat.c:1057
 legacy_get_tree+0xed/0x190 fs/fs_context.c:647
 vfs_get_tree+0x88/0x290 fs/super.c:1547
 do_new_mount fs/namespace.c:2852 [inline]
 do_mount+0x1882/0x2850 fs/namespace.c:3172
 ksys_mount+0xcc/0x100 fs/namespace.c:3381
 __do_sys_mount fs/namespace.c:3395 [inline]
 __se_sys_mount fs/namespace.c:3392 [inline]
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3392
 do_syscall_64+0xc0/0x100 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45de0a
Code: b8 a6 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 4d 8c fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 2a 8c fb ff c3 66 0f 1f 84 00 00 00 00 00
RSP: 002b:00007f73ff560a68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f73ff5616d4 RCX: 000000000045de0a
RDX: 00007f73ff560ae0 RSI: 00000000200002c0 RDI: 00007f73ff560b00
RBP: 000000000075bf20 R08: 00007f73ff560b40 R09: 00007f73ff560ae0
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000bb4 R14: 00000000004cc92b R15: 000000000075bf2c
Modules linked in:
---[ end trace 599d91be85239817 ]---
RIP: 0010:submit_bh_wbc+0x776/0x7a0 fs/buffer.c:3032
Code: 4d c8 80 e1 07 80 c1 03 38 c1 0f 8c cb fe ff ff 48 8b 7d c8 e8 3b 1f ed ff e9 bd fe ff ff e8 51 1b bf ff 0f 0b e8 4a 1b bf ff <0f> 0b e8 43 1b bf ff 0f 0b e8 3c 1b bf ff 0f 0b e8 35 1b bf ff 0f
RSP: 0018:ffff8881c185f828 EFLAGS: 00010293
RAX: ffffffff8183bc36 RBX: 0000000000000000 RCX: ffff8881d395e740
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff8881c185f8b8 R08: ffffffff8183b561 R09: ffffed103ad53127
R10: ffffed103ad53127 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8881d6a98930 R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f73ff561700(0000) GS:ffff8881dba00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0c9fe5ba20 CR3: 00000001cb42b003 CR4: 00000000001606f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400