memory leak in erase

memory leak in erase_aeb
Status: upstream: reported C repro on 2019/12/08 19:35
Reported-by: syzbot+f317896aae32eb281a58@syzkaller.appspotmail.com
First crash: 75d, last: 5m

Sample crash report:

BUG: memory leak
unreferenced object 0xffff888127cecb00 (size 32):
  comm "syz-executor527", pid 7144, jiffies 4294957528 (age 23.750s)
  hex dump (first 32 bytes):
    00 01 00 00 00 00 ad de 22 01 00 00 00 00 ad de  ........".......
    00 00 00 00 00 00 00 00 01 00 00 00 02 00 00 00  ................
  backtrace:
    [<0000000029f9ef6c>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<0000000029f9ef6c>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<0000000029f9ef6c>] slab_alloc mm/slab.c:3320 [inline]
    [<0000000029f9ef6c>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3484
    [<000000003092c936>] erase_aeb+0x2a/0x100 drivers/mtd/ubi/wl.c:1691
    [<00000000d507b66e>] ubi_wl_init+0x1ae/0x600 drivers/mtd/ubi/wl.c:1758
    [<0000000072e7d762>] ubi_attach+0x665/0x18e7 drivers/mtd/ubi/attach.c:1605
    [<0000000024d645cb>] ubi_attach_mtd_dev+0x5b3/0xd40 drivers/mtd/ubi/build.c:946
    [<00000000e6600cef>] ctrl_cdev_ioctl+0x149/0x1c0 drivers/mtd/ubi/cdev.c:1043
    [<000000001253992f>] vfs_ioctl fs/ioctl.c:47 [inline]
    [<000000001253992f>] file_ioctl fs/ioctl.c:545 [inline]
    [<000000001253992f>] do_vfs_ioctl+0x551/0x890 fs/ioctl.c:732
    [<00000000c49e8c94>] ksys_ioctl+0x86/0xb0 fs/ioctl.c:749
    [<00000000261db07c>] __do_sys_ioctl fs/ioctl.c:756 [inline]
    [<00000000261db07c>] __se_sys_ioctl fs/ioctl.c:754 [inline]
    [<00000000261db07c>] __x64_sys_ioctl+0x1e/0x30 fs/ioctl.c:754
    [<000000004f01dc3e>] do_syscall_64+0x73/0x220 arch/x86/entry/common.c:294
    [<000000002de81d29>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff888127cecb00 (size 32):
  comm "syz-executor527", pid 7144, jiffies 4294957528 (age 26.350s)
  hex dump (first 32 bytes):
    00 01 00 00 00 00 ad de 22 01 00 00 00 00 ad de  ........".......
    00 00 00 00 00 00 00 00 01 00 00 00 02 00 00 00  ................
  backtrace:
    [<0000000029f9ef6c>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<0000000029f9ef6c>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<0000000029f9ef6c>] slab_alloc mm/slab.c:3320 [inline]
    [<0000000029f9ef6c>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3484
    [<000000003092c936>] erase_aeb+0x2a/0x100 drivers/mtd/ubi/wl.c:1691
    [<00000000d507b66e>] ubi_wl_init+0x1ae/0x600 drivers/mtd/ubi/wl.c:1758
    [<0000000072e7d762>] ubi_attach+0x665/0x18e7 drivers/mtd/ubi/attach.c:1605
    [<0000000024d645cb>] ubi_attach_mtd_dev+0x5b3/0xd40 drivers/mtd/ubi/build.c:946
    [<00000000e6600cef>] ctrl_cdev_ioctl+0x149/0x1c0 drivers/mtd/ubi/cdev.c:1043
    [<000000001253992f>] vfs_ioctl fs/ioctl.c:47 [inline]
    [<000000001253992f>] file_ioctl fs/ioctl.c:545 [inline]
    [<000000001253992f>] do_vfs_ioctl+0x551/0x890 fs/ioctl.c:732
    [<00000000c49e8c94>] ksys_ioctl+0x86/0xb0 fs/ioctl.c:749
    [<00000000261db07c>] __do_sys_ioctl fs/ioctl.c:756 [inline]
    [<00000000261db07c>] __se_sys_ioctl fs/ioctl.c:754 [inline]
    [<00000000261db07c>] __x64_sys_ioctl+0x1e/0x30 fs/ioctl.c:754
    [<000000004f01dc3e>] do_syscall_64+0x73/0x220 arch/x86/entry/common.c:294
    [<000000002de81d29>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

BUG: memory leak
unreferenced object 0xffff888127cecb00 (size 32):
  comm "syz-executor527", pid 7144, jiffies 4294957528 (age 32.820s)
  hex dump (first 32 bytes):
    00 01 00 00 00 00 ad de 22 01 00 00 00 00 ad de  ........".......
    00 00 00 00 00 00 00 00 01 00 00 00 02 00 00 00  ................
  backtrace:
    [<0000000029f9ef6c>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
    [<0000000029f9ef6c>] slab_post_alloc_hook mm/slab.h:586 [inline]
    [<0000000029f9ef6c>] slab_alloc mm/slab.c:3320 [inline]
    [<0000000029f9ef6c>] kmem_cache_alloc+0x13f/0x2c0 mm/slab.c:3484
    [<000000003092c936>] erase_aeb+0x2a/0x100 drivers/mtd/ubi/wl.c:1691
    [<00000000d507b66e>] ubi_wl_init+0x1ae/0x600 drivers/mtd/ubi/wl.c:1758
    [<0000000072e7d762>] ubi_attach+0x665/0x18e7 drivers/mtd/ubi/attach.c:1605
    [<0000000024d645cb>] ubi_attach_mtd_dev+0x5b3/0xd40 drivers/mtd/ubi/build.c:946
    [<00000000e6600cef>] ctrl_cdev_ioctl+0x149/0x1c0 drivers/mtd/ubi/cdev.c:1043
    [<000000001253992f>] vfs_ioctl fs/ioctl.c:47 [inline]
    [<000000001253992f>] file_ioctl fs/ioctl.c:545 [inline]
    [<000000001253992f>] do_vfs_ioctl+0x551/0x890 fs/ioctl.c:732
    [<00000000c49e8c94>] ksys_ioctl+0x86/0xb0 fs/ioctl.c:749
    [<00000000261db07c>] __do_sys_ioctl fs/ioctl.c:756 [inline]
    [<00000000261db07c>] __se_sys_ioctl fs/ioctl.c:754 [inline]
    [<00000000261db07c>] __x64_sys_ioctl+0x1e/0x30 fs/ioctl.c:754
    [<000000004f01dc3e>] do_syscall_64+0x73/0x220 arch/x86/entry/common.c:294
    [<000000002de81d29>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

executing program
executing program
executing program
executing program
executing program

Crashes (43):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	Maintainers
ci-upstream-gce-leak	2020/01/11 17:19	upstream	bef1d882	4c04afaa	.config	log	report	syz	C	linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/02/22 01:27	upstream	b0dd1eb2	2ffa6679	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/02/21 02:34	upstream	ca7e1fd1	bd2a74a3	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/02/21 02:08	upstream	ca7e1fd1	bd2a74a3	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/02/21 01:36	upstream	ca7e1fd1	bd2a74a3	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/02/20 15:56	upstream	ca7e1fd1	81230308	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/02/20 14:21	upstream	ca7e1fd1	81230308	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/02/20 01:11	upstream	0a44cac8	b690a6e3	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/02/19 10:15	upstream	2b72104b	135c18aa	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/02/18 17:58	upstream	b1da3acc	012fbc32	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/02/16 06:36	upstream	829e6944	5d7b90f1	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/02/15 01:53	upstream	2019fc96	5d7b90f1	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/02/14 14:16	upstream	b19e8c68	5d7b90f1	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/02/14 13:43	upstream	b19e8c68	5d7b90f1	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/02/13 11:01	upstream	f2850dd5	84f4fc8a	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/02/03 11:00	upstream	46d6b7be	93e5e335	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/02/03 10:20	upstream	46d6b7be	93e5e335	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/02/03 09:43	upstream	46d6b7be	93e5e335	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/02/01 12:41	upstream	26dca6db	0eb59c27	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/01/31 15:52	upstream	ccaaaf6f	5ed23f9a	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/01/29 05:50	upstream	c677124e	c8e81ce4	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/01/29 05:18	upstream	c677124e	c8e81ce4	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/01/29 04:18	upstream	c677124e	c8e81ce4	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/01/27 21:14	upstream	d5226fa6	56cd6c9b	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/01/26 02:21	upstream	2821e26f	f4e7270e	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/01/25 08:50	upstream	6381b442	2e95ab33	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/01/25 07:08	upstream	6381b442	2e95ab33	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/01/23 20:20	upstream	131701c6	3334d684	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/01/23 06:35	upstream	dbab40bd	3334d684	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/01/18 18:55	upstream	25e73aad	3de7aabb	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/01/18 18:25	upstream	25e73aad	3de7aabb	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/01/18 16:41	upstream	25e73aad	3de7aabb	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/01/15 23:38	upstream	51d69817	f9b69507	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/01/11 16:39	upstream	bef1d882	4c04afaa	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/01/10 06:15	upstream	e69ec487	4de4e9f0	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/01/08 22:48	upstream	ae608821	ddc3e859	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2020/01/07 18:26	upstream	ae608821	1bcd407e	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2019/12/31 03:59	upstream	fd698849	7f117e28	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2019/12/31 03:28	upstream	fd698849	7f117e28	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2019/12/25 05:14	upstream	46cf053e	be5c2c81	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2019/12/13 03:53	upstream	ae4b064e	08003f64	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2019/12/08 22:35	upstream	9455d25f	1508f453	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com
ci-upstream-gce-leak	2019/12/08 04:59	upstream	ad910e36	1508f453	.config	log	report	syz		linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, miquel.raynal@bootlin.com, richard@nod.at, vigneshr@ti.com