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From: Ahmad Fatoum <a.fatoum@pengutronix.de>
To: barebox@lists.infradead.org
Cc: Ahmad Fatoum <a.fatoum@pengutronix.de>
Subject: [PATCH v2 040/113] fs: initialize struct nameidata::last
Date: Mon,  4 Mar 2024 19:59:25 +0100	[thread overview]
Message-ID: <20240304190038.3486881-41-a.fatoum@pengutronix.de> (raw)
In-Reply-To: <20240304190038.3486881-1-a.fatoum@pengutronix.de>

The last member is normally written by link_path_walk(), before being
read by __lookup_hash, among others.

In the special case of calling open() on "/", link_path_walk() will
terminate early without setting the last member, leading __d_alloc
called by __lookup_hash to read uninitialized memory.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
---
 fs/fs.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/fs.c b/fs/fs.c
index 0ff7f1b6f947..acd89dd1c9a4 100644
--- a/fs/fs.c
+++ b/fs/fs.c
@@ -1631,6 +1631,7 @@ struct filename {
 
 static void set_nameidata(struct nameidata *p, struct filename *name)
 {
+	p->last = slash_name;
 	p->stack = p->internal;
 	p->name = name;
 	p->total_link_count = 0;
-- 
2.39.2




  parent reply	other threads:[~2024-03-04 20:20 UTC|newest]

Thread overview: 115+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-03-04 18:58 [PATCH v2 000/113] efi: prepare for ARM64 EFI loader support Ahmad Fatoum
2024-03-04 18:58 ` [PATCH v2 001/113] string: implement strcmp_ptr and streq_ptr helpers Ahmad Fatoum
2024-03-04 18:58 ` [PATCH v2 002/113] commands: efiexit: flush console and shutdown barebox Ahmad Fatoum
2024-03-04 18:58 ` [PATCH v2 003/113] treewide: add errno_set helper for returning positive error code in errno Ahmad Fatoum
2024-03-04 18:58 ` [PATCH v2 004/113] vsprintf: guard against NULL in UUID %pU Ahmad Fatoum
2024-03-04 18:58 ` [PATCH v2 005/113] common: add option to poweroff system on failure Ahmad Fatoum
2024-03-04 18:58 ` [PATCH v2 006/113] boot: print error code when booting fails Ahmad Fatoum
2024-03-04 18:58 ` [PATCH v2 007/113] common: efi: move directory to top-level Ahmad Fatoum
2024-03-04 18:58 ` [PATCH v2 008/113] efi: payload: rename CONFIG_EFI_BOOTUP to CONFIG_EFI_PAYLOAD Ahmad Fatoum
2024-03-04 18:58 ` [PATCH v2 009/113] efi: payload: image: return actual read_file() error Ahmad Fatoum
2024-03-04 18:58 ` [PATCH v2 010/113] of: don't report failure to of_read_file twice Ahmad Fatoum
2024-03-04 18:58 ` [PATCH v2 011/113] efi: payload: make missing state reporting less verbose Ahmad Fatoum
2024-03-04 18:58 ` [PATCH v2 012/113] libfile: factor out read_file_into_buf helper Ahmad Fatoum
2024-03-04 18:58 ` [PATCH v2 013/113] efi: payload: image: allocate image via loader if it exceeds malloc area Ahmad Fatoum
2024-03-04 18:58 ` [PATCH v2 014/113] efi: payload: image: use assigned barebox loader type on x86 Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 015/113] efi: payload: iomem: adjust types to avoid casting Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 016/113] commands: kallsyms: add command-line interface Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 017/113] block: define BLOCKSIZE globally in block.h Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 018/113] cdev: implement setter/getter for cdev device node Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 019/113] block: virtio: assign virtio-mmio device tree node to cdevs Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 020/113] commands: stat: print DT node for cdevs if available Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 021/113] partitions: have parsers record bootable bits Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 022/113] commands: stat: display bootable partition table bit info Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 023/113] block: record block device type Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 024/113] include: add definitions for UAPI discoverable partitions spec Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 025/113] efi: payload: restrict 8250 UART at I/O port 0x3f8 registration to x86 Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 026/113] fs: fix unreaddir, so readdir returns unread dirent first Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 027/113] fs: turn creat into static inline helper Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 028/113] fs: drop unused LOOKUP_ flags Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 029/113] fs: opendir: reference mount point until closedir is called Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 030/113] fs: factor out opendir iteration Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 031/113] fs: implement fdopendir and rewinddir Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 032/113] fs: remove unused member from struct nameidata Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 033/113] fs: always check path_init for errors Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 034/113] fs: set current working dir directly when mounting root Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 035/113] fs: implement openat and friends Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 036/113] fs: implement O_PATH Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 037/113] fs: support different root directories Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 038/113] fs: implement O_CHROOT Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 039/113] commands: introduce new findmnt command Ahmad Fatoum
2024-03-04 18:59 ` Ahmad Fatoum [this message]
2024-03-04 18:59 ` [PATCH v2 041/113] fs: support opening / Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 042/113] test: self: add dirfd tests Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 043/113] commands: stat: add option for statat Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 044/113] efi: payload: lower command line options print from error to info Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 045/113] efi: payload: init: warn if /boot FS is unknown Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 046/113] commands: time: switch to using getopt for -n Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 047/113] commands: time: reduce strjoin runtime, drop trailing space Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 048/113] commands: time: refactor into new strjoin Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 049/113] test: self: add strjoin tests Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 050/113] filetype: have cdev_detect_type take a cdev Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 051/113] ARM: mmu-early: gracefully handle already enabled MMU Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 052/113] efi: don't hide structs, enums or unions behind _t Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 053/113] efi: make headers self-contained Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 054/113] efi: unify whitespace for GUIDs Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 055/113] efi: efi-guid: add more GUIDs Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 056/113] ARM64: cpu: setupc: rewrite to be fully PIC Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 057/113] ARM64: runtime-offset: make get_runtime_offset " Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 058/113] pbl: introduce CONFIG_PBL_FULLY_PIC Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 059/113] efi: payload: fix ARM build Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 060/113] efi: payload: init: restrict barebox mem to first 1G only on x86 Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 061/113] efi: add efi_is_loader/efi_is_payload helpers Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 062/113] efi: payload: suppress EFI payload initcalls when not EFI-loaded Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 063/113] ARM: make board data definitions accessible to other architectures Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 064/113] boarddata: add barebox_boarddata_is_machine helper Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 065/113] common: add PE/COFF loader Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 066/113] efi: use efi_handle_t where appropriate Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 067/113] efi: block: move definitions into header file Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 068/113] efi: define efi_handle_t as opaque pointer Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 069/113] efi: constify guid_t in API Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 070/113] efi: rename efi_simple_input_interface to efi_simple_text_input_protocol Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 071/113] efi: add EFI_WARN constants Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 072/113] efi-stdio: fix wait_for_event argument Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 073/113] efi-stdio: wait for extended input key event when using extended input Ahmad Fatoum
2024-03-04 18:59 ` [PATCH v2 074/113] efi: flesh out EFI definitions in header Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 075/113] efi: add efi_driver_binding_protocol Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 076/113] efi: improve usability of EFI_PAGE_* macros Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 077/113] fs: efi: move definitions into header Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 078/113] efi: fs: flesh out file system definitions Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 079/113] efi: stdio: fix efi_register_keystroke_notify prototype Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 080/113] video: mark EFI_GOP driver x86-only for now Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 081/113] filetype: add new file types for EFI-enabled Linux images Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 082/113] efi: payload: register handler for EFI-stubbed ARM64 kernel Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 083/113] efi: payload: factor C efi_main into dedicated file Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 084/113] efi: payload: early-mem: simplify error message reporting Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 085/113] efi: payload: early-mem: use EFI_PAGE_SIZE instead of PAGE_SIZE Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 086/113] ARM64: add optional EFI stub Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 087/113] efi: devicepath: improve const safety Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 088/113] efi: refactor device_path_to_partuuid for code reuse Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 089/113] efi: devicepath: implement device_path_to_str_buf variant Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 090/113] lib: vsprintf: align documentation with current feature set Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 091/113] vsprintf: add %pD for printing EFI device path Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 092/113] lib: string: import Linux strreplace helper Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 093/113] efi: payload: dynamically determine bootloader file name Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 094/113] efi: payload: iomem: register later Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 095/113] efi: payload: protect against buggy EFI implementations Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 096/113] efi: payload: don't require efi_loaded_image->parent_handle for bootsource detection Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 097/113] commands: add cpuinfo -s option for stacktrace Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 098/113] efi: devicepath: align MemoryMapped name with spec Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 099/113] efi: devicepath: pretty print BBS BEV DeviceType Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 100/113] efi: devicepath: format GUIDs as little endian Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 101/113] efi: devicepath: move END device node definitions into header Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 102/113] efi: devicepath: drop underscores in hex constants Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 103/113] efi: devicepath: namespace definitions Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 104/113] efi: devicepath: use flexible array members for trailing strings Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 105/113] efi: devicepath: drop unused macro Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 106/113] efi: devicepath: let compiler worry about unaligned unpacking Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 107/113] efi: devicepath: correct formatting of BBS Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 108/113] commands: provide efi_handle_dump in both payload and loader Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 109/113] lib: uuid: implement uuid/guid_parse Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 110/113] commands: efi_handle_dump: prepare for supporting EFI loader Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 111/113] commands: efi_handle_dump: print loaded image devpath Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 112/113] commands: efi_handle_dump: use guid_parse instead of open-coding Ahmad Fatoum
2024-03-04 19:00 ` [PATCH v2 113/113] commands: efi_handle_dump: don't ignore failure to parse GUID Ahmad Fatoum
2024-03-05 15:28 ` [PATCH v2 000/113] efi: prepare for ARM64 EFI loader support Sascha Hauer

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