[EXFAT] trying to mount...
------------[ cut here ]------------
[EXFAT] No bh, device seems wrong or to be ejected.
WARNING: CPU: 1 PID: 22268 at drivers/staging/exfat/exfat_blkdev.c:62 exfat_bdev_read+0x24f/0x2b0 drivers/staging/exfat/exfat_blkdev.c:62
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 22268 Comm: syz-executor.1 Not tainted 5.6.0-rc3-next-20200225-syzkaller #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+0x197/0x210 lib/dump_stack.c:118
 panic+0x2e3/0x75c kernel/panic.c:221
 __warn.cold+0x2f/0x3e kernel/panic.c:582
 report_bug+0x289/0x300 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:175 [inline]
 fixup_bug arch/x86/kernel/traps.c:170 [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:exfat_bdev_read+0x24f/0x2b0 drivers/staging/exfat/exfat_blkdev.c:62
Code: 00 00 31 ff 41 bc fb ff ff ff 89 de e8 9a ba 74 fb 85 db 0f 85 5d ff ff ff e8 0d b9 74 fb 48 c7 c7 60 ef ed 88 e8 30 d9 44 fb <0f> 0b e9 45 ff ff ff e8 15 e6 b3 fb e9 ad fe ff ff e8 cb e5 b3 fb
RSP: 0018:ffffc9001647fae0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 00000000000232ed RSI: ffffffff815ef766 RDI: fffff52002c8ff4e
RBP: ffffc9001647fb18 R08: ffff8880973681c0 R09: ffffed1015d26661
R10: ffffed1015d26660 R11: ffff8880ae933307 R12: 00000000fffffffb
R13: ffff88803ee60000 R14: 0000000000000001 R15: 0000000000000000
 sector_read+0x140/0x1f0 drivers/staging/exfat/exfat_core.c:2451
 ffsMountVol drivers/staging/exfat/exfat_super.c:376 [inline]
 exfat_fill_super.cold+0x2e4/0x895 drivers/staging/exfat/exfat_super.c:3236
 mount_bdev+0x304/0x3c0 fs/super.c:1417
 exfat_fs_mount+0x35/0x40 drivers/staging/exfat/exfat_super.c:3292
 legacy_get_tree+0x108/0x220 fs/fs_context.c:622
 vfs_get_tree+0x8e/0x300 fs/super.c:1547
 do_new_mount fs/namespace.c:2822 [inline]
 do_mount+0x135a/0x1b50 fs/namespace.c:3107
 __do_sys_mount fs/namespace.c:3316 [inline]
 __se_sys_mount fs/namespace.c:3293 [inline]
 __x64_sys_mount+0x192/0x230 fs/namespace.c:3293
 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45eeca
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:00007f42c3fa7a68 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f42c3fa86d4 RCX: 000000000045eeca
RDX: 00007f42c3fa7ae0 RSI: 0000000020000080 RDI: 00007f42c3fa7b00
RBP: 000000000076bf20 R08: 00007f42c3fa7b40 R09: 00007f42c3fa7ae0
R10: 0000000001018052 R11: 0000000000000202 R12: 00000000ffffffff
R13: 0000000000000bd8 R14: 00000000004cdb6a R15: 000000000076bf2c
Kernel Offset: disabled
Rebooting in 86400 seconds..