HI,
Found the io_req_local_work_add error when run liburing testing.
kernel repo :
Merge branch 'for-6.5/block' into for-next
* for-6.5/block:
reiserfs: fix blkdev_put() warning from release_journal_dev()
[ 1733.389012] BUG: KASAN: out-of-bounds in io_req_local_work_add+0x3b1/0x4a0
[ 1733.395900] Read of size 4 at addr ffff888133320458 by task
iou-wrk-97057/97138
[ 1733.403205]
[ 1733.404706] CPU: 4 PID: 97138 Comm: iou-wrk-97057 Kdump: loaded Not
tainted 6.4.0-rc3.kasan+ #1
[ 1733.413404] Hardware name: Dell Inc. PowerEdge R740/06WXJT, BIOS
2.13.3 12/13/2021
[ 1733.420972] Call Trace:
[ 1733.423425] <TASK>
[ 1733.425533] dump_stack_lvl+0x33/0x50
[ 1733.429207] print_address_description.constprop.0+0x2c/0x3e0
[ 1733.434959] print_report+0xb5/0x270
[ 1733.438539] ? kasan_addr_to_slab+0x9/0xa0
[ 1733.442639] ? io_req_local_work_add+0x3b1/0x4a0
[ 1733.447258] kasan_report+0xcf/0x100
[ 1733.450839] ? io_req_local_work_add+0x3b1/0x4a0
[ 1733.455456] io_req_local_work_add+0x3b1/0x4a0
[ 1733.459903] ? __pfx_io_req_local_work_add+0x10/0x10
[ 1733.464871] ? __schedule+0x616/0x1530
[ 1733.468622] __io_req_task_work_add+0x1bc/0x270
[ 1733.473156] io_issue_sqe+0x55a/0xe80
[ 1733.476831] io_wq_submit_work+0x23e/0xa00
[ 1733.480930] io_worker_handle_work+0x2f5/0xa80
[ 1733.485384] io_wq_worker+0x6c5/0x9d0
[ 1733.489051] ? __pfx_io_wq_worker+0x10/0x10
[ 1733.493246] ? _raw_spin_lock_irq+0x82/0xe0
[ 1733.497430] ? __pfx_io_wq_worker+0x10/0x10
[ 1733.501616] ret_from_fork+0x29/0x50
[ 1733.505204] </TASK>
[ 1733.507396]
[ 1733.508894] Allocated by task 97057:
[ 1733.512475] kasan_save_stack+0x1e/0x40
[ 1733.516313] kasan_set_track+0x21/0x30
[ 1733.520068] __kasan_slab_alloc+0x83/0x90
[ 1733.524080] kmem_cache_alloc_bulk+0x13a/0x1e0
[ 1733.528526] __io_alloc_req_refill+0x238/0x510
[ 1733.532971] io_submit_sqes+0x65a/0xcd0
[ 1733.536810] __do_sys_io_uring_enter+0x4e9/0x830
[ 1733.541430] do_syscall_64+0x59/0x90
[ 1733.545010] entry_SYSCALL_64_after_hwframe+0x72/0xdc
[ 1733.550071]
[ 1733.551571] The buggy address belongs to the object at ffff8881333203c0
[ 1733.551571] which belongs to the cache io_kiocb of size 224
[ 1733.563816] The buggy address is located 152 bytes inside of
[ 1733.563816] 224-byte region [ffff8881333203c0, ffff8881333204a0)
[ 1733.575544]
[ 1733.577042] The buggy address belongs to the physical page:
[ 1733.582617] page:00000000edbe178c refcount:1 mapcount:0
mapping:0000000000000000 index:0x0 pfn:0x133320
[ 1733.592011] head:00000000edbe178c order:1 entire_mapcount:0
nr_pages_mapped:0 pincount:0
[ 1733.600096] memcg:ffff88810cd49001
[ 1733.603501] flags:
0x17ffffc0010200(slab|head|node=0|zone=2|lastcpupid=0x1fffff)
[ 1733.610896] page_type: 0xffffffff()
[ 1733.614390] raw: 0017ffffc0010200 ffff888101222280 ffffea0004473900
0000000000000002
[ 1733.622128] raw: 0000000000000000 0000000000190019 00000001ffffffff
ffff88810cd49001
[ 1733.629866] page dumped because: kasan: bad access detected
[ 1733.635439]
[ 1733.636938] Memory state around the buggy address:
[ 1733.641731] ffff888133320300: 00 00 00 00 00 00 00 00 00 00 00 00
fc fc fc fc
[ 1733.648952] ffff888133320380: fc fc fc fc fc fc fc fc 00 00 00 00
00 00 00 00
[ 1733.656169] >ffff888133320400: 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00
[ 1733.663389] ^
[ 1733.669743] ffff888133320480: 00 00 00 00 fc fc fc fc fc fc fc fc
fc fc fc fc
[ 1733.676961] ffff888133320500: 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00
--
Guangwu Zhang
Thanks
