syzbot

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WARNING: lib/iov_iter.c:624 at iov_iter_revert+0x58a/0x5f0 lib/iov_iter.c:624, CPU#0: syz.0.23/6121
Modules linked in:
CPU: 0 UID: 0 PID: 6121 Comm: syz.0.23 Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:iov_iter_revert+0x58a/0x5f0 lib/iov_iter.c:624
Code: 5c 24 30 74 08 48 89 df e8 93 03 a6 fd 4c 89 2b 48 83 c4 38 5b 41 5c 41 5d 41 5e 41 5f 5d e9 bd 6e 59 06 cc e8 47 cb 43 fd 90 <0f> 0b 90 eb e1 e8 3c cb 43 fd eb da 89 d9 80 e1 07 38 c1 0f 8c e6
RSP: 0018:ffffc900040d7a38 EFLAGS: 00010293
RAX: ffffffff847be0e9 RBX: ffffc900040d7d60 RCX: ffff88803016bc80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000005 R12: 1ffff9200081afaf
R13: 0000000000001000 R14: ffffc900040d7d78 R15: fffffffffffffe00
FS:  00007f4ef5b456c0(0000) GS:ffff888126cef000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000002000 CR3: 00000000248a4000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 generic_file_read_iter+0x38f/0x520 mm/filemap.c:2975
 do_iter_readv_writev+0x635/0x8d0 fs/read_write.c:-1
 vfs_readv+0x259/0x850 fs/read_write.c:1018
 do_preadv fs/read_write.c:1132 [inline]
 __do_sys_preadv2 fs/read_write.c:1191 [inline]
 __se_sys_preadv2+0x17c/0x2a0 fs/read_write.c:1182
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xec/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4ef64ff749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4ef5b45038 EFLAGS: 00000246 ORIG_RAX: 0000000000000147
RAX: ffffffffffffffda RBX: 00007f4ef6756090 RCX: 00007f4ef64ff749
RDX: 0000000000000001 RSI: 0000200000000280 RDI: 0000000000000005
RBP: 00007f4ef6583f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4ef6756128 R14: 00007f4ef6756090 R15: 00007ffe193f8de8
 </TASK>