From: Sergey Senozhatsky <senozhatsky@chromium•org>
To: Mike Rapoport <rppt@kernel•org>
Cc: Andrew Morton <akpm@linux-foundation•org>,
Andreas Larsson <andreas@gaisler•com>,
Andy Lutomirski <luto@kernel•org>,
Ard Biesheuvel <ardb@kernel•org>, Arnd Bergmann <arnd@arndb•de>,
Borislav Petkov <bp@alien8•de>, Brian Cain <bcain@quicinc•com>,
Catalin Marinas <catalin.marinas@arm•com>,
Christoph Hellwig <hch@infradead•org>,
Christophe Leroy <christophe.leroy@csgroup•eu>,
Dave Hansen <dave.hansen@linux•intel.com>,
Dinh Nguyen <dinguyen@kernel•org>,
Geert Uytterhoeven <geert@linux-m68k•org>,
Guo Ren <guoren@kernel•org>, Helge Deller <deller@gmx•de>,
Huacai Chen <chenhuacai@kernel•org>,
Ingo Molnar <mingo@redhat•com>,
Johannes Berg <johannes@sipsolutions•net>,
John Paul Adrian Glaubitz <glaubitz@physik•fu-berlin.de>,
Kent Overstreet <kent.overstreet@linux•dev>,
"Liam R. Howlett" <Liam.Howlett@oracle•com>,
Luis Chamberlain <mcgrof@kernel•org>,
Mark Rutland <mark.rutland@arm•com>,
Masami Hiramatsu <mhiramat@kernel•org>,
Matt Turner <mattst88@gmail•com>,
Max Filippov <jcmvbkbc@gmail•com>,
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Palmer Dabbelt <palmer@dabbelt•com>,
Peter Zijlstra <peterz@infradead•org>,
Richard Weinberger <richard@nod•at>,
Russell King <linux@armlinux•org.uk>, Song Liu <song@kernel•org>,
Stafford Horne <shorne@gmail•com>,
Steven Rostedt <rostedt@goodmis•org>,
Thomas Bogendoerfer <tsbogend@alpha•franken.de>,
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linuxppc-dev@lists•ozlabs.org, loongarch@lists•linux.dev,
sparclinux@vger•kernel.org, x86@kernel•org
Subject: Bisected: [PATCH v5 8/8] x86/module: enable ROX caches for module text
Date: Thu, 10 Oct 2024 17:30:33 +0900 [thread overview]
Message-ID: <20241010083033.GA1279924@google.com> (raw)
In-Reply-To: <20241009180816.83591-9-rppt@kernel.org>
On (24/10/09 21:08), Mike Rapoport wrote:
> From: "Mike Rapoport (Microsoft)" <rppt@kernel•org>
>
> Enable execmem's cache of PMD_SIZE'ed pages mapped as ROX for module
> text allocations.
>
With this modprobe disappoints kmemleak
[ 12.700128] kmemleak: Found object by alias at 0xffffffffa000a000
[ 12.702179] CPU: 5 UID: 0 PID: 410 Comm: modprobe Tainted: G N 6.12.0-rc2+ #760
[ 12.704656] Tainted: [N]=TEST
[ 12.705526] Call Trace:
[ 12.706250] <TASK>
[ 12.706888] dump_stack_lvl+0x3e/0xdb
[ 12.707961] __find_and_get_object+0x100/0x110
[ 12.709256] kmemleak_no_scan+0x2e/0xb0
[ 12.710354] kmemleak_load_module+0xad/0xe0
[ 12.711557] load_module+0x2391/0x45a0
[ 12.712507] __se_sys_finit_module+0x4e0/0x7a0
[ 12.713599] do_syscall_64+0x54/0xf0
[ 12.714477] ? irqentry_exit_to_user_mode+0x33/0x100
[ 12.715696] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 12.716931] RIP: 0033:0x7fc7af51f059
[ 12.717816] Code: 08 89 e8 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 8f 1d 0d 00 f7 d8 64 89 01 48
[ 12.722324] RSP: 002b:00007ffc1d0b0c18 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[ 12.724173] RAX: ffffffffffffffda RBX: 00005618a9439b20 RCX: 00007fc7af51f059
[ 12.725884] RDX: 0000000000000000 RSI: 000056187aea098b RDI: 0000000000000003
[ 12.727617] RBP: 0000000000000000 R08: 0000000000000060 R09: 00005618a943af60
[ 12.729361] R10: 0000000000000038 R11: 0000000000000246 R12: 000056187aea098b
[ 12.731101] R13: 0000000000040000 R14: 00005618a9439ac0 R15: 0000000000000000
[ 12.732814] </TASK>
[ 12.733362] kmemleak: Object 0xffffffffa0000000 (size 2097152):
[ 12.734800] kmemleak: comm "modprobe", pid 410, jiffies 4294880489
[ 12.736334] kmemleak: min_count = 2
[ 12.737228] kmemleak: count = 0
[ 12.738043] kmemleak: flags = 0x5
[ 12.738917] kmemleak: checksum = 0
[ 12.739783] kmemleak: backtrace:
[ 12.740606] kmemleak_vmalloc+0x29/0xc0
[ 12.741532] kasan_alloc_module_shadow+0xbe/0xe0
[ 12.742649] execmem_vmalloc+0x116/0x220
[ 12.743596] execmem_alloc+0xfb/0x3d0
[ 12.744479] load_module+0x1e84/0x45a0
[ 12.745383] __se_sys_finit_module+0x4e0/0x7a0
[ 12.746452] do_syscall_64+0x54/0xf0
[ 12.747319] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 12.748772] kmemleak: Not scanning unknown object at 0xffffffffa000a000
[ 12.750364] CPU: 5 UID: 0 PID: 410 Comm: modprobe Tainted: G N 6.12.0-rc2+ #760
[ 12.752441] Tainted: [N]=TEST
[ 12.753165] Call Trace:
[ 12.753760] <TASK>
[ 12.754279] dump_stack_lvl+0x3e/0xdb
[ 12.755165] kmemleak_load_module+0xad/0xe0
[ 12.756165] load_module+0x2391/0x45a0
[ 12.757068] __se_sys_finit_module+0x4e0/0x7a0
[ 12.758135] do_syscall_64+0x54/0xf0
[ 12.759099] ? irqentry_exit_to_user_mode+0x33/0x100
[ 12.760292] entry_SYSCALL_64_after_hwframe+0x4b/0x53
[ 12.761508] RIP: 0033:0x7fc7af51f059
[ 12.762372] Code: 08 89 e8 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 8f 1d 0d 00 f7 d8 64 89 01 48
[ 12.772361] RSP: 002b:00007ffc1d0b0c18 EFLAGS: 00000246 ORIG_RAX: 0000000000000139
[ 12.774957] RAX: ffffffffffffffda RBX: 00005618a9439b20 RCX: 00007fc7af51f059
[ 12.776635] RDX: 0000000000000000 RSI: 000056187aea098b RDI: 0000000000000003
[ 12.778283] RBP: 0000000000000000 R08: 0000000000000060 R09: 00005618a943af60
[ 12.779949] R10: 0000000000000038 R11: 0000000000000246 R12: 000056187aea098b
[ 12.781619] R13: 0000000000040000 R14: 00005618a9439ac0 R15: 0000000000000000
[ 12.783319] </TASK>
next prev parent reply other threads:[~2024-10-10 8:30 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-09 18:08 [PATCH v5 0/8] x86/module: use large ROX pages for text allocations Mike Rapoport
2024-10-09 18:08 ` [PATCH v5 1/8] mm: vmalloc: group declarations depending on CONFIG_MMU together Mike Rapoport
2024-10-10 6:54 ` Christoph Hellwig
2024-10-09 18:08 ` [PATCH v5 2/8] mm: vmalloc: don't account for number of nodes for HUGE_VMAP allocations Mike Rapoport
2024-10-10 6:54 ` Christoph Hellwig
2024-10-09 18:08 ` [PATCH v5 3/8] asm-generic: introduce text-patching.h Mike Rapoport
2024-10-10 6:55 ` Christoph Hellwig
2024-10-10 7:22 ` Geert Uytterhoeven
2024-10-10 8:04 ` Arnd Bergmann
2024-10-09 18:08 ` [PATCH v5 4/8] module: prepare to handle ROX allocations for text Mike Rapoport
2024-10-09 22:23 ` Song Liu
2024-10-10 5:43 ` Mike Rapoport
2024-10-10 17:18 ` Song Liu
2024-10-09 18:08 ` [PATCH v5 5/8] arch: introduce set_direct_map_valid_noflush() Mike Rapoport
2024-10-10 6:56 ` Christoph Hellwig
2024-10-09 18:08 ` [PATCH v5 6/8] x86/module: perpare module loading for ROX allocations of text Mike Rapoport
2024-10-10 6:57 ` Christoph Hellwig
2024-10-10 22:54 ` Nathan Chancellor
2024-10-11 12:58 ` Mike Rapoport
2024-10-15 8:29 ` Nathan Chancellor
2024-10-09 18:08 ` [PATCH v5 7/8] execmem: add support for cache of large ROX pages Mike Rapoport
2024-10-09 20:24 ` Andrew Morton
2024-10-10 9:29 ` Mike Rapoport
2024-10-10 6:58 ` Christoph Hellwig
2024-10-10 12:57 ` Mike Rapoport
2024-10-11 7:46 ` Christoph Hellwig
2024-10-13 8:43 ` Mike Rapoport
2024-10-14 3:26 ` Andrew Morton
2024-10-14 19:16 ` Luis Chamberlain
2024-10-15 4:09 ` Luis Chamberlain
2024-10-15 5:54 ` Mike Rapoport
2024-10-15 20:11 ` Luis Chamberlain
2024-10-16 10:40 ` Mike Rapoport
2024-10-16 23:58 ` Luis Chamberlain
2024-10-14 5:55 ` Christoph Hellwig
2024-10-14 13:07 ` Mike Rapoport
2024-10-10 18:35 ` Kees Bakker
2024-10-09 18:08 ` [PATCH v5 8/8] x86/module: enable ROX caches for module text Mike Rapoport
2024-10-10 8:30 ` Sergey Senozhatsky [this message]
2024-10-10 15:20 ` Bisected: " Mike Rapoport
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