--- /dev/null
+From ff2a66d21fd2364ed9396d151115eec59612b200 Mon Sep 17 00:00:00 2001
+From: Salah Triki <salah.triki@gmail.com>
+Date: Thu, 31 Jul 2025 04:15:27 +0100
+Subject: EDAC/altera: Delete an inappropriate dma_free_coherent() call
+
+From: Salah Triki <salah.triki@gmail.com>
+
+commit ff2a66d21fd2364ed9396d151115eec59612b200 upstream.
+
+dma_free_coherent() must only be called if the corresponding
+dma_alloc_coherent() call has succeeded. Calling it when the allocation fails
+leads to undefined behavior.
+
+Delete the wrong call.
+
+ [ bp: Massage commit message. ]
+
+Fixes: 71bcada88b0f3 ("edac: altera: Add Altera SDRAM EDAC support")
+Signed-off-by: Salah Triki <salah.triki@gmail.com>
+Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
+Acked-by: Dinh Nguyen <dinguyen@kernel.org>
+Cc: stable@vger.kernel.org
+Link: https://lore.kernel.org/aIrfzzqh4IzYtDVC@pc
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/edac/altera_edac.c | 1 -
+ 1 file changed, 1 deletion(-)
+
+--- a/drivers/edac/altera_edac.c
++++ b/drivers/edac/altera_edac.c
+@@ -125,7 +125,6 @@ static ssize_t altr_sdr_mc_err_inject_wr
+
+ ptemp = dma_alloc_coherent(mci->pdev, 16, &dma_handle, GFP_KERNEL);
+ if (!ptemp) {
+- dma_free_coherent(mci->pdev, 16, ptemp, dma_handle);
+ edac_printk(KERN_ERR, EDAC_MC,
+ "Inject: Buffer Allocation error\n");
+ return -ENOMEM;
--- /dev/null
+From 1e08938c3694f707bb165535df352ac97a8c75c9 Mon Sep 17 00:00:00 2001
+From: Miklos Szeredi <mszeredi@redhat.com>
+Date: Tue, 12 Aug 2025 14:46:34 +0200
+Subject: fuse: prevent overflow in copy_file_range return value
+
+From: Miklos Szeredi <mszeredi@redhat.com>
+
+commit 1e08938c3694f707bb165535df352ac97a8c75c9 upstream.
+
+The FUSE protocol uses struct fuse_write_out to convey the return value of
+copy_file_range, which is restricted to uint32_t. But the COPY_FILE_RANGE
+interface supports a 64-bit size copies.
+
+Currently the number of bytes copied is silently truncated to 32-bit, which
+may result in poor performance or even failure to copy in case of
+truncation to zero.
+
+Reported-by: Florian Weimer <fweimer@redhat.com>
+Closes: https://lore.kernel.org/all/lhuh5ynl8z5.fsf@oldenburg.str.redhat.com/
+Fixes: 88bc7d5097a1 ("fuse: add support for copy_file_range()")
+Cc: <stable@vger.kernel.org> # v4.20
+Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ fs/fuse/file.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/fs/fuse/file.c
++++ b/fs/fuse/file.c
+@@ -3299,7 +3299,7 @@ static ssize_t __fuse_copy_file_range(st
+ .nodeid_out = ff_out->nodeid,
+ .fh_out = ff_out->fh,
+ .off_out = pos_out,
+- .len = len,
++ .len = min_t(size_t, len, UINT_MAX & PAGE_MASK),
+ .flags = flags
+ };
+ struct fuse_write_out outarg;
--- /dev/null
+From 811c0da4542df3c065f6cb843ced68780e27bb44 Mon Sep 17 00:00:00 2001
+From: Christophe Kerello <christophe.kerello@foss.st.com>
+Date: Tue, 12 Aug 2025 09:30:08 +0200
+Subject: mtd: rawnand: stm32_fmc2: fix ECC overwrite
+
+From: Christophe Kerello <christophe.kerello@foss.st.com>
+
+commit 811c0da4542df3c065f6cb843ced68780e27bb44 upstream.
+
+In case OOB write is requested during a data write, ECC is currently
+lost. Avoid this issue by only writing in the free spare area.
+This issue has been seen with a YAFFS2 file system.
+
+Signed-off-by: Christophe Kerello <christophe.kerello@foss.st.com>
+Cc: stable@vger.kernel.org
+Fixes: 2cd457f328c1 ("mtd: rawnand: stm32_fmc2: add STM32 FMC2 NAND flash controller driver")
+Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ drivers/mtd/nand/raw/stm32_fmc2_nand.c | 18 +++++++++++++++---
+ 1 file changed, 15 insertions(+), 3 deletions(-)
+
+--- a/drivers/mtd/nand/raw/stm32_fmc2_nand.c
++++ b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
+@@ -1037,9 +1037,21 @@ static int stm32_fmc2_sequencer_write(st
+
+ /* Write oob */
+ if (oob_required) {
+- ret = nand_change_write_column_op(chip, mtd->writesize,
+- chip->oob_poi, mtd->oobsize,
+- false);
++ unsigned int offset_in_page = mtd->writesize;
++ const void *buf = chip->oob_poi;
++ unsigned int len = mtd->oobsize;
++
++ if (!raw) {
++ struct mtd_oob_region oob_free;
++
++ mtd_ooblayout_free(mtd, 0, &oob_free);
++ offset_in_page += oob_free.offset;
++ buf += oob_free.offset;
++ len = oob_free.length;
++ }
++
++ ret = nand_change_write_column_op(chip, offset_in_page,
++ buf, len, false);
+ if (ret)
+ return ret;
+ }
--- /dev/null
+From 04100f775c2ea501927f508f17ad824ad1f23c8d Mon Sep 17 00:00:00 2001
+From: Mark Tinguely <mark.tinguely@oracle.com>
+Date: Fri, 29 Aug 2025 10:18:15 -0500
+Subject: ocfs2: fix recursive semaphore deadlock in fiemap call
+
+From: Mark Tinguely <mark.tinguely@oracle.com>
+
+commit 04100f775c2ea501927f508f17ad824ad1f23c8d upstream.
+
+syzbot detected a OCFS2 hang due to a recursive semaphore on a
+FS_IOC_FIEMAP of the extent list on a specially crafted mmap file.
+
+context_switch kernel/sched/core.c:5357 [inline]
+ __schedule+0x1798/0x4cc0 kernel/sched/core.c:6961
+ __schedule_loop kernel/sched/core.c:7043 [inline]
+ schedule+0x165/0x360 kernel/sched/core.c:7058
+ schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:7115
+ rwsem_down_write_slowpath+0x872/0xfe0 kernel/locking/rwsem.c:1185
+ __down_write_common kernel/locking/rwsem.c:1317 [inline]
+ __down_write kernel/locking/rwsem.c:1326 [inline]
+ down_write+0x1ab/0x1f0 kernel/locking/rwsem.c:1591
+ ocfs2_page_mkwrite+0x2ff/0xc40 fs/ocfs2/mmap.c:142
+ do_page_mkwrite+0x14d/0x310 mm/memory.c:3361
+ wp_page_shared mm/memory.c:3762 [inline]
+ do_wp_page+0x268d/0x5800 mm/memory.c:3981
+ handle_pte_fault mm/memory.c:6068 [inline]
+ __handle_mm_fault+0x1033/0x5440 mm/memory.c:6195
+ handle_mm_fault+0x40a/0x8e0 mm/memory.c:6364
+ do_user_addr_fault+0x764/0x1390 arch/x86/mm/fault.c:1387
+ handle_page_fault arch/x86/mm/fault.c:1476 [inline]
+ exc_page_fault+0x76/0xf0 arch/x86/mm/fault.c:1532
+ asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
+RIP: 0010:copy_user_generic arch/x86/include/asm/uaccess_64.h:126 [inline]
+RIP: 0010:raw_copy_to_user arch/x86/include/asm/uaccess_64.h:147 [inline]
+RIP: 0010:_inline_copy_to_user include/linux/uaccess.h:197 [inline]
+RIP: 0010:_copy_to_user+0x85/0xb0 lib/usercopy.c:26
+Code: e8 00 bc f7 fc 4d 39 fc 72 3d 4d 39 ec 77 38 e8 91 b9 f7 fc 4c 89
+f7 89 de e8 47 25 5b fd 0f 01 cb 4c 89 ff 48 89 d9 4c 89 f6 <f3> a4 0f
+1f 00 48 89 cb 0f 01 ca 48 89 d8 5b 41 5c 41 5d 41 5e 41
+RSP: 0018:ffffc9000403f950 EFLAGS: 00050256
+RAX: ffffffff84c7f101 RBX: 0000000000000038 RCX: 0000000000000038
+RDX: 0000000000000000 RSI: ffffc9000403f9e0 RDI: 0000200000000060
+RBP: ffffc9000403fa90 R08: ffffc9000403fa17 R09: 1ffff92000807f42
+R10: dffffc0000000000 R11: fffff52000807f43 R12: 0000200000000098
+R13: 00007ffffffff000 R14: ffffc9000403f9e0 R15: 0000200000000060
+ copy_to_user include/linux/uaccess.h:225 [inline]
+ fiemap_fill_next_extent+0x1c0/0x390 fs/ioctl.c:145
+ ocfs2_fiemap+0x888/0xc90 fs/ocfs2/extent_map.c:806
+ ioctl_fiemap fs/ioctl.c:220 [inline]
+ do_vfs_ioctl+0x1173/0x1430 fs/ioctl.c:532
+ __do_sys_ioctl fs/ioctl.c:596 [inline]
+ __se_sys_ioctl+0x82/0x170 fs/ioctl.c:584
+ do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
+ do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
+ entry_SYSCALL_64_after_hwframe+0x77/0x7f
+RIP: 0033:0x7f5f13850fd9
+RSP: 002b:00007ffe3b3518b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
+RAX: ffffffffffffffda RBX: 0000200000000000 RCX: 00007f5f13850fd9
+RDX: 0000200000000040 RSI: 00000000c020660b RDI: 0000000000000004
+RBP: 6165627472616568 R08: 0000000000000000 R09: 0000000000000000
+R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffe3b3518f0
+R13: 00007ffe3b351b18 R14: 431bde82d7b634db R15: 00007f5f1389a03b
+
+ocfs2_fiemap() takes a read lock of the ip_alloc_sem semaphore (since
+v2.6.22-527-g7307de80510a) and calls fiemap_fill_next_extent() to read the
+extent list of this running mmap executable. The user supplied buffer to
+hold the fiemap information page faults calling ocfs2_page_mkwrite() which
+will take a write lock (since v2.6.27-38-g00dc417fa3e7) of the same
+semaphore. This recursive semaphore will hold filesystem locks and causes
+a hang of the fileystem.
+
+The ip_alloc_sem protects the inode extent list and size. Release the
+read semphore before calling fiemap_fill_next_extent() in ocfs2_fiemap()
+and ocfs2_fiemap_inline(). This does an unnecessary semaphore lock/unlock
+on the last extent but simplifies the error path.
+
+Link: https://lkml.kernel.org/r/61d1a62b-2631-4f12-81e2-cd689914360b@oracle.com
+Fixes: 00dc417fa3e7 ("ocfs2: fiemap support")
+Signed-off-by: Mark Tinguely <mark.tinguely@oracle.com>
+Reported-by: syzbot+541dcc6ee768f77103e7@syzkaller.appspotmail.com
+Closes: https://syzkaller.appspot.com/bug?extid=541dcc6ee768f77103e7
+Reviewed-by: Joseph Qi <joseph.qi@linux.alibaba.com>
+Cc: Mark Fasheh <mark@fasheh.com>
+Cc: Joel Becker <jlbec@evilplan.org>
+Cc: Junxiao Bi <junxiao.bi@oracle.com>
+Cc: Changwei Ge <gechangwei@live.cn>
+Cc: Jun Piao <piaojun@huawei.com>
+Cc: <stable@vger.kernel.org>
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ fs/ocfs2/extent_map.c | 10 +++++++++-
+ 1 file changed, 9 insertions(+), 1 deletion(-)
+
+--- a/fs/ocfs2/extent_map.c
++++ b/fs/ocfs2/extent_map.c
+@@ -698,6 +698,8 @@ out:
+ * it not only handles the fiemap for inlined files, but also deals
+ * with the fast symlink, cause they have no difference for extent
+ * mapping per se.
++ *
++ * Must be called with ip_alloc_sem semaphore held.
+ */
+ static int ocfs2_fiemap_inline(struct inode *inode, struct buffer_head *di_bh,
+ struct fiemap_extent_info *fieinfo,
+@@ -709,6 +711,7 @@ static int ocfs2_fiemap_inline(struct in
+ u64 phys;
+ u32 flags = FIEMAP_EXTENT_DATA_INLINE|FIEMAP_EXTENT_LAST;
+ struct ocfs2_inode_info *oi = OCFS2_I(inode);
++ lockdep_assert_held_read(&oi->ip_alloc_sem);
+
+ di = (struct ocfs2_dinode *)di_bh->b_data;
+ if (ocfs2_inode_is_fast_symlink(inode))
+@@ -724,8 +727,11 @@ static int ocfs2_fiemap_inline(struct in
+ phys += offsetof(struct ocfs2_dinode,
+ id2.i_data.id_data);
+
++ /* Release the ip_alloc_sem to prevent deadlock on page fault */
++ up_read(&OCFS2_I(inode)->ip_alloc_sem);
+ ret = fiemap_fill_next_extent(fieinfo, 0, phys, id_count,
+ flags);
++ down_read(&OCFS2_I(inode)->ip_alloc_sem);
+ if (ret < 0)
+ return ret;
+ }
+@@ -796,9 +802,11 @@ int ocfs2_fiemap(struct inode *inode, st
+ len_bytes = (u64)le16_to_cpu(rec.e_leaf_clusters) << osb->s_clustersize_bits;
+ phys_bytes = le64_to_cpu(rec.e_blkno) << osb->sb->s_blocksize_bits;
+ virt_bytes = (u64)le32_to_cpu(rec.e_cpos) << osb->s_clustersize_bits;
+-
++ /* Release the ip_alloc_sem to prevent deadlock on page fault */
++ up_read(&OCFS2_I(inode)->ip_alloc_sem);
+ ret = fiemap_fill_next_extent(fieinfo, virt_bytes, phys_bytes,
+ len_bytes, fe_flags);
++ down_read(&OCFS2_I(inode)->ip_alloc_sem);
+ if (ret)
+ break;
+
projects / thirdparty / kernel / stable-queue.git / commitdiff
