Bug 216705
| Summary: | ubifs: memleak in dirty_cow_znode's error handling path | ||
|---|---|---|---|
| Product: | File System | Reporter: | Zhihao Cheng (chengzhihao1) |
| Component: | Other | Assignee: | fs_other |
| Status: | NEW --- | ||
| Severity: | normal | ||
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | 6.1.0-rc5 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: |
diff
setup.sh |
||
Created attachment 303208 [details]
diff
Created attachment 303209 [details]
setup.sh
|
1. Apply diff 2. ./setup.sh 1 3. ./xfstests-dev/ltp/fsstress -d temp -l0 -n 1000 -p 4 4. echo scan > /sys/kernel/debug/kmemleak 5. cat /sys/kernel/debug/kmemleak unreferenced object 0xffff888173b7a400 (size 1024): comm "kworker/u8:7", pid 79, jiffies 4294728150 (age 15.339s) hex dump (first 32 bytes): 00 a8 b7 73 81 88 ff ff 00 00 00 00 00 00 00 00 ...s............ 00 4c 59 7a 81 88 ff ff 01 00 00 00 00 00 00 00 .LYz............ backtrace: [<00000000e21ac054>] slab_post_alloc_hook+0x89/0x5a0 [<000000009c2262f6>] __kmem_cache_alloc_node+0x1de/0x400 [<0000000075380dcb>] __kmalloc_node_track_caller+0x5c/0x280 [<00000000054caf24>] kmemdup+0x32/0x70 [<000000004e90d9fb>] dirty_cow_znode+0xe7/0x2e0 [ubifs] [<0000000078da6869>] lookup_level0_dirty+0xf9/0x550 [ubifs] [<000000008f95bcab>] ubifs_tnc_add+0x7f/0x2c0 [ubifs] [<000000000216832b>] ubifs_jnl_write_data+0x28f/0x580 [ubifs] [<00000000a4b01bf4>] do_writepage+0xbd/0x480 [ubifs] [<0000000050992322>] ubifs_writepage+0x1e7/0x3d0 [ubifs] [<000000006497a924>] __writepage+0x1c/0xc0 [<0000000095d2e11a>] write_cache_pages+0x1cc/0x850 [<00000000a01394db>] generic_writepages+0x5c/0xb0 [<000000004a2dd4b1>] do_writepages+0xcc/0x200 [<00000000b0c753e5>] __writeback_single_inode+0x61/0x6c0 [<00000000583fed20>] writeback_sb_inodes+0x255/0x730