syzbot

exFAT-fs (loop0): valid_size(150994954) is greater than size(10)
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unroll > MAX_RW_COUNT
WARNING: lib/iov_iter.c:624 at iov_iter_revert+0x58a/0x5f0 lib/iov_iter.c:624, CPU#1: syz.0.21/5926
Modules linked in:
CPU: 1 UID: 0 PID: 5926 Comm: syz.0.21 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:iov_iter_revert+0x58a/0x5f0 lib/iov_iter.c:624
Code: 5c 24 30 74 08 48 89 df e8 43 b9 8b fd 4c 89 2b 48 83 c4 38 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 87 ac 24 fd 90 <0f> 0b 90 eb e1 e8 7c ac 24 fd eb da 89 d9 80 e1 07 38 c1 0f 8c e6
RSP: 0018:ffffc900043f7bb8 EFLAGS: 00010293
RAX: ffffffff849fca49 RBX: ffffc900043f7d70 RCX: ffff888030fc1ec0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000005 R12: 1ffff9200087efb1
R13: 0000000000001000 R14: ffffc900043f7d88 R15: fffffffffffff00a
FS:  00007fa07301e6c0(0000) GS:ffff888126276000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000140a CR3: 0000000024cd4000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 generic_file_read_iter+0x38f/0x520 mm/filemap.c:2981
 new_sync_read fs/read_write.c:493 [inline]
 vfs_read+0x58b/0xa80 fs/read_write.c:574
 ksys_read+0x156/0x270 fs/read_write.c:717
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa0739bcdd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fa07301e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007fa073c35fa0 RCX: 00007fa0739bcdd9
RDX: 0000000000001000 RSI: 0000200000001400 RDI: 0000000000000004
RBP: 00007fa073a52d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa073c36038 R14: 00007fa073c35fa0 R15: 00007ffef46a96c8
 </TASK>