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ext4_orphan_add() requires caller to be holding the inode lock. Add missing lock statements. WARNING: CPU: 3 PID: 1806 at fs/ext4/namei.c:2731 ext4_orphan_add+0x4e/0x240 CPU: 3 PID: 1806 Comm: python Not tainted 4.12.0-rc1+ #746 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 task: ffff880135d466c0 task.stack: ffffc900014b0000 RIP: 0010:ext4_orphan_add+0x4e/0x240 RSP: 0018:ffffc900014b3d50 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff8801348fe1f0 RCX: ffffc900014b3c64 RDX: 0000000000000000 RSI: ffff8801348fe1f0 RDI: ffff8801348fe1f0 RBP: ffffc900014b3da0 R08: 0000000000000000 R09: ffffffff80e82025 R10: 0000000000004692 R11: 000000000000468d R12: ffff880137598000 R13: ffff880137217000 R14: ffff880134ac58d0 R15: 0000000000000000 FS: 00007fc50f09e740(0000) GS:ffff88013fd80000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000008bc2e0 CR3: 00000001375ac000 CR4: 00000000000006e0 Call Trace: ext4_xattr_inode_orphan_add.constprop.19+0x9d/0xf0 ext4_xattr_delete_inode+0x1c4/0x2f0 ext4_evict_inode+0x15a/0x7f0 evict+0xc0/0x1a0 iput+0x16a/0x270 do_unlinkat+0x172/0x290 SyS_unlink+0x11/0x20 entry_SYSCALL_64_fastpath+0x18/0xad Signed-off-by: Tahsin Erdogan <tahsin@google.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.