From: Uwe Kleine-König u.kleine-koenig@baylibre.com
[ Upstream commit 2f3cfd2f4b7cf3026fe6b9b2a5320cc18f4c184e ]
For an out-of-memory error there should be no additional output. Adapt dev_err_probe() to not emit the error message when err is -ENOMEM. This simplifies handling errors that might among others be -ENOMEM.
Signed-off-by: Uwe Kleine-König u.kleine-koenig@baylibre.com Reviewed-by: Geert Uytterhoeven geert+renesas@glider.be Link: https://lore.kernel.org/r/3d1e308d45cddf67749522ca42d83f5b4f0b9634.171831175... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/base/core.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-)
diff --git a/drivers/base/core.c b/drivers/base/core.c index d995d768c362a..a5415f0b021b5 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -4724,11 +4724,22 @@ int dev_err_probe(const struct device *dev, int err, const char *fmt, ...) vaf.fmt = fmt; vaf.va = &args;
- if (err != -EPROBE_DEFER) { - dev_err(dev, "error %pe: %pV", ERR_PTR(err), &vaf); - } else { + switch (err) { + case -EPROBE_DEFER: device_set_deferred_probe_reason(dev, &vaf); dev_dbg(dev, "error %pe: %pV", ERR_PTR(err), &vaf); + break; + + case -ENOMEM: + /* + * We don't print anything on -ENOMEM, there is already enough + * output. + */ + break; + + default: + dev_err(dev, "error %pe: %pV", ERR_PTR(err), &vaf); + break; }
va_end(args);
From: Edward Adam Davis eadavis@qq.com
[ Upstream commit ce6dede912f064a855acf6f04a04cbb2c25b8c8c ]
[syzbot reported] general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 0 PID: 5061 Comm: syz-executor404 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:dtInsertEntry+0xd0c/0x1780 fs/jfs/jfs_dtree.c:3713 ... [Analyze] In dtInsertEntry(), when the pointer h has the same value as p, after writing name in UniStrncpy_to_le(), p->header.flag will be cleared. This will cause the previously true judgment "p->header.flag & BT-LEAF" to change to no after writing the name operation, this leads to entering an incorrect branch and accessing the uninitialized object ih when judging this condition for the second time.
[Fix] After got the page, check freelist first, if freelist == 0 then exit dtInsert() and return -EINVAL.
Reported-by: syzbot+bba84aef3a26fb93deb9@syzkaller.appspotmail.com Signed-off-by: Edward Adam Davis eadavis@qq.com Signed-off-by: Dave Kleikamp dave.kleikamp@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/jfs/jfs_dtree.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/fs/jfs/jfs_dtree.c b/fs/jfs/jfs_dtree.c index a222a9d71887f..defa82acb432c 100644 --- a/fs/jfs/jfs_dtree.c +++ b/fs/jfs/jfs_dtree.c @@ -834,6 +834,8 @@ int dtInsert(tid_t tid, struct inode *ip, * the full page. */ DT_GETSEARCH(ip, btstack->top, bn, mp, p, index); + if (p->header.freelist == 0) + return -EINVAL;
/* * insert entry for new key
From: Pei Li peili.dev@gmail.com
[ Upstream commit 7063b80268e2593e58bee8a8d709c2f3ff93e2f2 ]
When searching for the next smaller log2 block, BLKSTOL2() returned 0, causing shift exponent -1 to be negative.
This patch fixes the issue by exiting the loop directly when negative shift is found.
Reported-by: syzbot+61be3359d2ee3467e7e4@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=61be3359d2ee3467e7e4 Signed-off-by: Pei Li peili.dev@gmail.com Signed-off-by: Dave Kleikamp dave.kleikamp@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/jfs/jfs_dmap.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/fs/jfs/jfs_dmap.c b/fs/jfs/jfs_dmap.c index 3f5c14315719b..9ff0b292287ba 100644 --- a/fs/jfs/jfs_dmap.c +++ b/fs/jfs/jfs_dmap.c @@ -1694,6 +1694,8 @@ s64 dbDiscardAG(struct inode *ip, int agno, s64 minlen) } else if (rc == -ENOSPC) { /* search for next smaller log2 block */ l2nb = BLKSTOL2(nblocks) - 1; + if (unlikely(l2nb < 0)) + break; nblocks = 1LL << l2nb; } else { /* Trim any already allocated blocks */
linux-stable-mirror@lists.linaro.org
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Sasha Levin