mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-05-03 19:26:01 -04:00
f920436a44
It is possible for a pointer of type struct inet_timewait_sock to be
returned from the functions __inet_lookup_established() and
__inet6_lookup_established(). This can cause a crash when the
returned pointer is of type struct inet_timewait_sock and
sock_put() is called on it. The following is a crash call stack that
shows sk->sk_wmem_alloc being accessed in sk_free() during the call to
sock_put() on a struct inet_timewait_sock pointer. To avoid this issue,
use sock_gen_put() instead of sock_put() when sk->sk_state
is TCP_TIME_WAIT.
mrdump.ko ipanic() + 120
vmlinux notifier_call_chain(nr_to_call=-1, nr_calls=0) + 132
vmlinux atomic_notifier_call_chain(val=0) + 56
vmlinux panic() + 344
vmlinux add_taint() + 164
vmlinux end_report() + 136
vmlinux kasan_report(size=0) + 236
vmlinux report_tag_fault() + 16
vmlinux do_tag_recovery() + 16
vmlinux __do_kernel_fault() + 88
vmlinux do_bad_area() + 28
vmlinux do_tag_check_fault() + 60
vmlinux do_mem_abort() + 80
vmlinux el1_abort() + 56
vmlinux el1h_64_sync_handler() + 124
vmlinux > 0xFFFFFFC080011294()
vmlinux __lse_atomic_fetch_add_release(v=0xF2FFFF82A896087C)
vmlinux __lse_atomic_fetch_sub_release(v=0xF2FFFF82A896087C)
vmlinux arch_atomic_fetch_sub_release(i=1, v=0xF2FFFF82A896087C)
+ 8
vmlinux raw_atomic_fetch_sub_release(i=1, v=0xF2FFFF82A896087C)
+ 8
vmlinux atomic_fetch_sub_release(i=1, v=0xF2FFFF82A896087C) + 8
vmlinux __refcount_sub_and_test(i=1, r=0xF2FFFF82A896087C,
oldp=0) + 8
vmlinux __refcount_dec_and_test(r=0xF2FFFF82A896087C, oldp=0) + 8
vmlinux refcount_dec_and_test(r=0xF2FFFF82A896087C) + 8
vmlinux sk_free(sk=0xF2FFFF82A8960700) + 28
vmlinux sock_put() + 48
vmlinux tcp6_check_fraglist_gro() + 236
vmlinux tcp6_gro_receive() + 624
vmlinux ipv6_gro_receive() + 912
vmlinux dev_gro_receive() + 1116
vmlinux napi_gro_receive() + 196
ccmni.ko ccmni_rx_callback() + 208
ccmni.ko ccmni_queue_recv_skb() + 388
ccci_dpmaif.ko dpmaif_rxq_push_thread() + 1088
vmlinux kthread() + 268
vmlinux 0xFFFFFFC08001F30C()
Fixes: c9d1d23e52 ("net: add heuristic for enabling TCP fraglist GRO")
Signed-off-by: Jibin Zhang <jibin.zhang@mediatek.com>
Signed-off-by: Shiming Cheng <shiming.cheng@mediatek.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20250429020412.14163-1-shiming.cheng@mediatek.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
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.