memory leak in new

memory leak in new_inode
Status: upstream: reported C repro on 2020/11/20 15:15
Reported-by: syzbot+aa12d6106ea4ca1b6aae@syzkaller.appspotmail.com
First crash: 60d, last: 60d

Sample crash report:

executing program
executing program
BUG: memory leak
unreferenced object 0xffff88810ecc2a80 (size 1280):
  comm "syz-executor002", pid 8495, jiffies 4294947195 (age 8.020s)
  hex dump (first 32 bytes):
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace:
    [<00000000c920fbb4>] jfs_alloc_inode+0x18/0x60 fs/jfs/super.c:105
    [<00000000c664943b>] alloc_inode+0x27/0x100 fs/inode.c:234
    [<0000000072a6900b>] new_inode_pseudo fs/inode.c:930 [inline]
    [<0000000072a6900b>] new_inode+0x23/0x100 fs/inode.c:959
    [<0000000022579323>] diReadSpecial+0x28/0x1e0 fs/jfs/jfs_imap.c:424
    [<0000000035d6f1c1>] jfs_mount+0xa7/0x280 fs/jfs/jfs_mount.c:107
    [<00000000db4745f5>] jfs_fill_super+0x1ad/0x3a0 fs/jfs/super.c:562
    [<00000000deb24c86>] mount_bdev+0x223/0x260 fs/super.c:1419
    [<00000000355bbcf1>] legacy_get_tree+0x2b/0x90 fs/fs_context.c:592
    [<00000000b4778640>] vfs_get_tree+0x28/0x100 fs/super.c:1549
    [<00000000661148dd>] do_new_mount fs/namespace.c:2875 [inline]
    [<00000000661148dd>] path_mount+0xc5e/0x1170 fs/namespace.c:3205
    [<00000000184bf2c6>] do_mount fs/namespace.c:3218 [inline]
    [<00000000184bf2c6>] __do_sys_mount fs/namespace.c:3426 [inline]
    [<00000000184bf2c6>] __se_sys_mount fs/namespace.c:3403 [inline]
    [<00000000184bf2c6>] __x64_sys_mount+0x18e/0x1d0 fs/namespace.c:3403
    [<000000004af9fc85>] do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
    [<000000004cba2559>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

Crashes (1):
Manager	Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Maintainers
ci-upstream-gce-leak	2020/11/19 17:49	upstream	c2e7554e	0767f13f	.config	log	report	syz	C		jfs-discussion@lists.sourceforge.net, linux-kernel@vger.kernel.org, shaggy@kernel.org