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Date: Sat, 23 Mar 2024 21:40:03 +0100 From: Mirsad Todorovac <mirsad.todorovac@....unizg.hr> To: netdev@...r.kernel.org Cc: "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, linux-kernel@...r.kernel.org, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, "Rafael J. Wysocki" <rafael@...nel.org>, Shuah Khan <shuah@...nel.org>, Dmitry Safonov <0x7f454c46@...il.com>, Randy Dunlap <rdunlap@...radead.org>, Colin Ian King <colin.i.king@...il.com> Subject: [BUG][KMEMLEAK] selftests/net/tcp_ao: unreferenced object (size 128) Hi, On the Ubuntu 22.04 LTS system, with recent iproute2-next toolsvand build 6.8-11743-ga4145ce1e7bc, kmemleak system reported the following memory leaks: unreferenced object 0xffff9d998a7a9200 (size 128): comm "unsigned-md5_ip", pid 884102, jiffies 4297217176 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 2a283862): kmemleak_alloc (/home/marvin/linux/kernel/linux_torvalds/mm/kmemleak.c:1045) kmalloc_trace (/home/marvin/linux/kernel/linux_torvalds/./include/linux/kmemleak.h:42 /home/marvin/linux/kernel/linux_torvalds/mm/slub.c:3802 /home/marvin/linux/kernel/linux_torvalds/mm/slub.c:3845 /home/marvin/linux/kernel/linux_torvalds/mm/slub.c:3992) tcp_ao_alloc_info (/home/marvin/linux/kernel/linux_torvalds/net/ipv4/tcp_ao.c:229) tcp_ao_info_cmd.constprop.0 (/home/marvin/linux/kernel/linux_torvalds/net/ipv4/tcp_ao.c:1959) tcp_v4_parse_ao (/home/marvin/linux/kernel/linux_torvalds/net/ipv4/tcp_ao.c:2038) do_tcp_setsockopt (/home/marvin/linux/kernel/linux_torvalds/net/ipv4/tcp.c:3655) tcp_setsockopt (/home/marvin/linux/kernel/linux_torvalds/net/ipv4/tcp.c:3738) sock_common_setsockopt (/home/marvin/linux/kernel/linux_torvalds/net/core/sock.c:3727) do_sock_setsockopt (/home/marvin/linux/kernel/linux_torvalds/net/socket.c:2311) __sys_setsockopt (/home/marvin/linux/kernel/linux_torvalds/./include/linux/file.h:34 /home/marvin/linux/kernel/linux_torvalds/net/socket.c:2336) __x64_sys_setsockopt (/home/marvin/linux/kernel/linux_torvalds/net/socket.c:2340) do_syscall_64 (/home/marvin/linux/kernel/linux_torvalds/arch/x86/entry/common.c:52 /home/marvin/linux/kernel/linux_torvalds/arch/x86/entry/common.c:83) entry_SYSCALL_64_after_hwframe (/home/marvin/linux/kernel/linux_torvalds/arch/x86/entry/entry_64.S:129) unreferenced object 0xffff9d9a49065b00 (size 128): comm "unsigned-md5_ip", pid 884438, jiffies 4297233666 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 2a283862): kmemleak_alloc (/home/marvin/linux/kernel/linux_torvalds/mm/kmemleak.c:1045) kmalloc_trace (/home/marvin/linux/kernel/linux_torvalds/./include/linux/kmemleak.h:42 /home/marvin/linux/kernel/linux_torvalds/mm/slub.c:3802 /home/marvin/linux/kernel/linux_torvalds/mm/slub.c:3845 /home/marvin/linux/kernel/linux_torvalds/mm/slub.c:3992) tcp_ao_alloc_info (/home/marvin/linux/kernel/linux_torvalds/net/ipv4/tcp_ao.c:229) tcp_ao_info_cmd.constprop.0 (/home/marvin/linux/kernel/linux_torvalds/net/ipv4/tcp_ao.c:1959) tcp_parse_ao (/home/marvin/linux/kernel/linux_torvalds/net/ipv4/tcp_ao.c:2033) tcp_v6_parse_ao (/home/marvin/linux/kernel/linux_torvalds/net/ipv6/tcp_ao.c:146) do_tcp_setsockopt (/home/marvin/linux/kernel/linux_torvalds/net/ipv4/tcp.c:3655) tcp_setsockopt (/home/marvin/linux/kernel/linux_torvalds/net/ipv4/tcp.c:3738) sock_common_setsockopt (/home/marvin/linux/kernel/linux_torvalds/net/core/sock.c:3727) do_sock_setsockopt (/home/marvin/linux/kernel/linux_torvalds/net/socket.c:2311) __sys_setsockopt (/home/marvin/linux/kernel/linux_torvalds/./include/linux/file.h:34 /home/marvin/linux/kernel/linux_torvalds/net/socket.c:2336) __x64_sys_setsockopt (/home/marvin/linux/kernel/linux_torvalds/net/socket.c:2340) do_syscall_64 (/home/marvin/linux/kernel/linux_torvalds/arch/x86/entry/common.c:52 /home/marvin/linux/kernel/linux_torvalds/arch/x86/entry/common.c:83) entry_SYSCALL_64_after_hwframe (/home/marvin/linux/kernel/linux_torvalds/arch/x86/entry/entry_64.S:129) unreferenced object 0xffff9d9a8c98fb00 (size 128): comm "unsigned-md5_ip", pid 2063902, jiffies 4321736387 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 2a283862): kmemleak_alloc (/home/marvin/linux/kernel/linux_torvalds/mm/kmemleak.c:1045) kmalloc_trace (/home/marvin/linux/kernel/linux_torvalds/./include/linux/kmemleak.h:42 /home/marvin/linux/kernel/linux_torvalds/mm/slub.c:3802 /home/marvin/linux/kernel/linux_torvalds/mm/slub.c:3845 /home/marvin/linux/kernel/linux_torvalds/mm/slub.c:3992) tcp_ao_alloc_info (/home/marvin/linux/kernel/linux_torvalds/net/ipv4/tcp_ao.c:229) tcp_ao_info_cmd.constprop.0 (/home/marvin/linux/kernel/linux_torvalds/net/ipv4/tcp_ao.c:1959) tcp_v4_parse_ao (/home/marvin/linux/kernel/linux_torvalds/net/ipv4/tcp_ao.c:2038) do_tcp_setsockopt (/home/marvin/linux/kernel/linux_torvalds/net/ipv4/tcp.c:3655) tcp_setsockopt (/home/marvin/linux/kernel/linux_torvalds/net/ipv4/tcp.c:3738) sock_common_setsockopt (/home/marvin/linux/kernel/linux_torvalds/net/core/sock.c:3727) do_sock_setsockopt (/home/marvin/linux/kernel/linux_torvalds/net/socket.c:2311) __sys_setsockopt (/home/marvin/linux/kernel/linux_torvalds/./include/linux/file.h:34 /home/marvin/linux/kernel/linux_torvalds/net/socket.c:2336) __x64_sys_setsockopt (/home/marvin/linux/kernel/linux_torvalds/net/socket.c:2340) do_syscall_64 (/home/marvin/linux/kernel/linux_torvalds/arch/x86/entry/common.c:52 /home/marvin/linux/kernel/linux_torvalds/arch/x86/entry/common.c:83) entry_SYSCALL_64_after_hwframe (/home/marvin/linux/kernel/linux_torvalds/arch/x86/entry/entry_64.S:129) unreferenced object 0xffff9d9a49efdd00 (size 128): comm "unsigned-md5_ip", pid 2064231, jiffies 4321752509 hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace (crc 2a283862): kmemleak_alloc (/home/marvin/linux/kernel/linux_torvalds/mm/kmemleak.c:1045) kmalloc_trace (/home/marvin/linux/kernel/linux_torvalds/./include/linux/kmemleak.h:42 /home/marvin/linux/kernel/linux_torvalds/mm/slub.c:3802 /home/marvin/linux/kernel/linux_torvalds/mm/slub.c:3845 /home/marvin/linux/kernel/linux_torvalds/mm/slub.c:3992) tcp_ao_alloc_info (/home/marvin/linux/kernel/linux_torvalds/net/ipv4/tcp_ao.c:229) tcp_ao_info_cmd.constprop.0 (/home/marvin/linux/kernel/linux_torvalds/net/ipv4/tcp_ao.c:1959) tcp_parse_ao (/home/marvin/linux/kernel/linux_torvalds/net/ipv4/tcp_ao.c:2033) tcp_v6_parse_ao (/home/marvin/linux/kernel/linux_torvalds/net/ipv6/tcp_ao.c:146) do_tcp_setsockopt (/home/marvin/linux/kernel/linux_torvalds/net/ipv4/tcp.c:3655) tcp_setsockopt (/home/marvin/linux/kernel/linux_torvalds/net/ipv4/tcp.c:3738) sock_common_setsockopt (/home/marvin/linux/kernel/linux_torvalds/net/core/sock.c:3727) do_sock_setsockopt (/home/marvin/linux/kernel/linux_torvalds/net/socket.c:2311) __sys_setsockopt (/home/marvin/linux/kernel/linux_torvalds/./include/linux/file.h:34 /home/marvin/linux/kernel/linux_torvalds/net/socket.c:2336) __x64_sys_setsockopt (/home/marvin/linux/kernel/linux_torvalds/net/socket.c:2340) do_syscall_64 (/home/marvin/linux/kernel/linux_torvalds/arch/x86/entry/common.c:52 /home/marvin/linux/kernel/linux_torvalds/arch/x86/entry/common.c:83) entry_SYSCALL_64_after_hwframe (/home/marvin/linux/kernel/linux_torvalds/arch/x86/entry/entry_64.S:129) Hope this helps, Best regards, Mirsad Todorovac
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