memory leak in z_erofs_do_read

Title	Replies (including bot)	Last reply
[PATCH -next v3] erofs: Fix pcluster memleak when its block address is zero	5 (5)	2022/12/06 15:07
[PATCH v2] erofs: Fix pcluster memleak when m_pa is zero	2 (2)	2022/12/05 03:46
[PATCH] erofs: Fix pcluster become inline when m_pa is zero	4 (4)	2022/12/05 01:55
[PATCH] erofs: fix inline pcluster memory leak	1 (1)	2022/12/02 03:33
[syzbot] memory leak in z_erofs_do_read_page	0 (1)	2022/12/01 11:54

BUG: memory leak unreferenced object 0xffff88811009c7f8 (size 136): comm "syz-executor227", pid 3659, jiffies 4294973830 (age 12.500s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 02 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<ffffffff821db19b>] kmem_cache_zalloc include/linux/slab.h:679 [inline] [<ffffffff821db19b>] z_erofs_alloc_pcluster fs/erofs/zdata.c:152 [inline] [<ffffffff821db19b>] z_erofs_register_pcluster fs/erofs/zdata.c:497 [inline] [<ffffffff821db19b>] z_erofs_collector_begin fs/erofs/zdata.c:576 [inline] [<ffffffff821db19b>] z_erofs_do_read_page+0x99b/0x1740 fs/erofs/zdata.c:728 [<ffffffff821dee9e>] z_erofs_readahead+0x24e/0x580 fs/erofs/zdata.c:1670 [<ffffffff814bc0d6>] read_pages+0x86/0x3d0 mm/readahead.c:161 [<ffffffff814bc60d>] page_cache_ra_unbounded+0x1ed/0x220 mm/readahead.c:270 [<ffffffff814bcfe9>] do_page_cache_ra mm/readahead.c:300 [inline] [<ffffffff814bcfe9>] page_cache_ra_order+0x399/0x410 mm/readahead.c:560 [<ffffffff814bd48d>] ondemand_readahead+0x42d/0x640 mm/readahead.c:682 [<ffffffff814bd7d8>] page_cache_sync_ra+0x138/0x140 mm/readahead.c:709 [<ffffffff814ac448>] page_cache_sync_readahead include/linux/pagemap.h:1213 [inline] [<ffffffff814ac448>] filemap_get_pages+0x158/0xa00 mm/filemap.c:2581 [<ffffffff814ace2e>] filemap_read+0x13e/0x520 mm/filemap.c:2675 [<ffffffff814ad3e9>] generic_file_read_iter+0x1d9/0x280 mm/filemap.c:2821 [<ffffffff815f782f>] __kernel_read+0x13f/0x340 fs/read_write.c:428 [<ffffffff822729ac>] integrity_kernel_read+0x2c/0x40 security/integrity/iint.c:199 [<ffffffff82276d4c>] ima_calc_file_hash_tfm+0x11c/0x1d0 security/integrity/ima/ima_crypto.c:485 [<ffffffff82277131>] ima_calc_file_shash security/integrity/ima/ima_crypto.c:516 [inline] [<ffffffff82277131>] ima_calc_file_hash+0xf1/0xa70 security/integrity/ima/ima_crypto.c:573 [<ffffffff82278b57>] ima_collect_measurement+0x307/0x380 security/integrity/ima/ima_api.c:292 [<ffffffff82274dbd>] process_measurement+0x7cd/0xdb0 security/integrity/ima/ima_main.c:337 BUG: memory leak unreferenced object 0xffff88811009ca18 (size 136): comm "syz-executor227", pid 3663, jiffies 4294974353 (age 7.270s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 02 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<ffffffff821db19b>] kmem_cache_zalloc include/linux/slab.h:679 [inline] [<ffffffff821db19b>] z_erofs_alloc_pcluster fs/erofs/zdata.c:152 [inline] [<ffffffff821db19b>] z_erofs_register_pcluster fs/erofs/zdata.c:497 [inline] [<ffffffff821db19b>] z_erofs_collector_begin fs/erofs/zdata.c:576 [inline] [<ffffffff821db19b>] z_erofs_do_read_page+0x99b/0x1740 fs/erofs/zdata.c:728 [<ffffffff821dee9e>] z_erofs_readahead+0x24e/0x580 fs/erofs/zdata.c:1670 [<ffffffff814bc0d6>] read_pages+0x86/0x3d0 mm/readahead.c:161 [<ffffffff814bc60d>] page_cache_ra_unbounded+0x1ed/0x220 mm/readahead.c:270 [<ffffffff814bcfe9>] do_page_cache_ra mm/readahead.c:300 [inline] [<ffffffff814bcfe9>] page_cache_ra_order+0x399/0x410 mm/readahead.c:560 [<ffffffff814bd48d>] ondemand_readahead+0x42d/0x640 mm/readahead.c:682 [<ffffffff814bd7d8>] page_cache_sync_ra+0x138/0x140 mm/readahead.c:709 [<ffffffff814ac448>] page_cache_sync_readahead include/linux/pagemap.h:1213 [inline] [<ffffffff814ac448>] filemap_get_pages+0x158/0xa00 mm/filemap.c:2581 [<ffffffff814ace2e>] filemap_read+0x13e/0x520 mm/filemap.c:2675 [<ffffffff814ad3e9>] generic_file_read_iter+0x1d9/0x280 mm/filemap.c:2821 [<ffffffff815f782f>] __kernel_read+0x13f/0x340 fs/read_write.c:428 [<ffffffff822729ac>] integrity_kernel_read+0x2c/0x40 security/integrity/iint.c:199 [<ffffffff82276d4c>] ima_calc_file_hash_tfm+0x11c/0x1d0 security/integrity/ima/ima_crypto.c:485 [<ffffffff82277131>] ima_calc_file_shash security/integrity/ima/ima_crypto.c:516 [inline] [<ffffffff82277131>] ima_calc_file_hash+0xf1/0xa70 security/integrity/ima/ima_crypto.c:573 [<ffffffff82278b57>] ima_collect_measurement+0x307/0x380 security/integrity/ima/ima_api.c:292 [<ffffffff82274dbd>] process_measurement+0x7cd/0xdb0 security/integrity/ima/ima_main.c:337