[EXFAT] trying to mount...
------------[ cut here ]------------
[EXFAT] No bh, device seems wrong or to be ejected.
WARNING: CPU: 0 PID: 10028 at drivers/staging/exfat/exfat_blkdev.c:62 bdev_read+0x258/0x2b0 drivers/staging/exfat/exfat_blkdev.c:62
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 10028 Comm: syz-executor.3 Not tainted 5.4.0-rc4-next-20191025 #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+0x172/0x1f0 lib/dump_stack.c:113
 panic+0x2e3/0x75c kernel/panic.c:221
 __warn.cold+0x2f/0x35 kernel/panic.c:582
 report_bug+0x289/0x300 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 fixup_bug arch/x86/kernel/traps.c:169 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:267
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:286
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:bdev_read+0x258/0x2b0 drivers/staging/exfat/exfat_blkdev.c:62
Code: ff df 80 3c 02 00 0f 84 51 ff ff ff 4c 89 e7 e8 ce 49 34 fc e9 44 ff ff ff e8 f4 63 f8 fb 48 c7 c7 60 43 3e 88 e8 f0 6a c9 fb <0f> 0b eb 8a e8 af 48 34 fc e9 17 fe ff ff e8 e5 48 34 fc e9 99 fe
RSP: 0018:ffff88805f71fad0 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 000000000002ccdf RSI: ffffffff815d0de6 RDI: ffffed100bee3f4c
RBP: ffff88805f71fb10 R08: ffff88808e1a2340 R09: ffffed1015d06161
R10: ffffed1015d06160 R11: ffff8880ae830b07 R12: 0000000000000000
R13: ffff88805ddc0000 R14: 0000000000000001 R15: 0000000000000200
 sector_read+0x156/0x1e0 drivers/staging/exfat/exfat_core.c:3615
 ffsMountVol drivers/staging/exfat/exfat_super.c:374 [inline]
 exfat_fill_super.cold+0x4d6/0xdba drivers/staging/exfat/exfat_super.c:3869
 mount_bdev+0x304/0x3c0 fs/super.c:1415
 exfat_fs_mount+0x35/0x40 drivers/staging/exfat/exfat_super.c:3936
 legacy_get_tree+0x108/0x220 fs/fs_context.c:647
 vfs_get_tree+0x8e/0x300 fs/super.c:1545
 do_new_mount fs/namespace.c:2822 [inline]
 do_mount+0x135a/0x1b50 fs/namespace.c:3142
 ksys_mount+0xdb/0x150 fs/namespace.c:3351
 __do_sys_mount fs/namespace.c:3365 [inline]
 __se_sys_mount fs/namespace.c:3362 [inline]
 __x64_sys_mount+0xbe/0x150 fs/namespace.c:3362
 do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459f39
Code: ad b6 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 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fb55f709c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000459f39
RDX: 0000000020000200 RSI: 00000000200001c0 RDI: 0000000020000080
RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000246 R12: 00007fb55f70a6d4
R13: 00000000004c6992 R14: 00000000004dbc90 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..