Re: [syzbot] [nvme?] WARNING in nvmet_fc_register_targetport

[syzbot <syzbot+18b6b27f58e98c240814@syzkaller.appspotmail.com>]

syzbot has found a reproducer for the following issue on:

HEAD commit:    3d6d817622b0 Merge tag 'scsi-fixes' of git://git.kernel.or..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1119f479580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=c44651ea7dd2f307
dashboard link: https://syzkaller.appspot.com/bug?extid=18b6b27f58e98c240814
compiler:       gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=174e8ac6580000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+18b6b27f58e98c240814@syzkaller.appspotmail.com

R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
R13: 00007fe0eeb9c063 R14: 00007fe0eebc6cc0 R15: 0000000000000002
 </TASK>
------------[ cut here ]------------
!PageLargeKmalloc(page)
WARNING: mm/slub.c:6602 at free_large_kmalloc+0xbf/0x100 mm/slub.c:6602, CPU#2: syz-executor838/6035
Modules linked in:
CPU: 2 UID: 0 PID: 6035 Comm: syz-executor838 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:free_large_kmalloc+0xbf/0x100 mm/slub.c:6602
Code: 28 90 0f 0b 90 80 3d f7 c8 9a 0e 00 0f 84 87 b4 b5 fe 48 8b 74 24 28 48 89 ef e8 8c 3b 0c 00 b8 00 f0 ff ff 45 31 ed eb 9d 90 <0f> 0b 90 48 83 c4 08 48 89 df 48 c7 c6 53 4d 19 8e 5b 5d 41 5c 41
RSP: 0018:ffffc9000347fa28 EFLAGS: 00010202
RAX: 00000000000000ff RBX: ffffea00016377c0 RCX: 000000000000002e
RDX: 0000000000000000 RSI: ffff888058ddff20 RDI: ffffea00016377c0
RBP: ffff888058ddff20 R08: ffff888052911000 R09: 00000000ffffffff
R10: ffffffffffffffff R11: 0000000000000000 R12: 00000000ffffffff
R13: 1ffff9200068ff5e R14: dead000000000122 R15: ffff888058ddff30
FS:  000055557f333400(0000) GS:ffff8880d5fec000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557f335768 CR3: 0000000058747000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 nvmet_fc_alloc_ls_iodlist drivers/nvme/target/fc.c:569 [inline]
 nvmet_fc_register_targetport+0x114c/0x1c30 drivers/nvme/target/fc.c:1411
 fcloop_create_target_port+0x156/0x5a0 drivers/nvme/target/fcloop.c:1558
 dev_attr_store+0x58/0x80 drivers/base/core.c:2505
 sysfs_kf_write+0xf2/0x150 fs/sysfs/file.c:145
 kernfs_fop_write_iter+0x3e0/0x5f0 fs/kernfs/file.c:345
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x6ac/0x1050 fs/read_write.c:687
 ksys_write+0x12a/0x250 fs/read_write.c:739
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe0eeb63277
Code: 48 89 fa 4c 89 df e8 98 1d 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007fffdd23d920 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000055557f333400 RCX: 00007fe0eeb63277
RDX: 000000000000002f RSI: 00007fffdd23d970 RDI: 0000000000000003
RBP: 00007fffdd23d970 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000003
R13: 00007fe0eeb9c063 R14: 00007fe0eebc6cc0 R15: 0000000000000002
 </TASK>


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