Subject: Re: [GIT PULL] Networking for v6.13-rc7

From: Jakub Kicinski <[email-masked]>
Date: Thu, 16 Jan 2025 19:38:21 -0800

On Thu, 09 Jan 2025 23:21:07 +0000 [email-masked] wrote:
> The pull request you sent on Thu,  9 Jan 2025 10:29:53 -0800:
> 
> > git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git tags/net-6.13-rc7  
> 
> has been merged into torvalds/linux.git:
> https://git.kernel.org/torvalds/c/c77cd47cee041bc1664b8e5fcd23036e5aab8e2a

Hi Linus!

After 76d5d4c53e68 ("mm/kmemleak: fix percpu memory leak detection
failure") we get this on every instance of our testing VMs:

unreferenced object 0x00042aa0 (size 64):
  comm "swapper/0", pid 0, jiffies 4294667296
  hex dump (first 32 bytes on cpu 2):
    00 00 00 00 00 00 00 00 00 00 06 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace (crc 0):
    pcpu_alloc_noprof+0x4ad/0xab0
    setup_zone_pageset+0x30/0x290
    setup_per_cpu_pageset+0x6a/0x1f0
    start_kernel+0x2a4/0x410
    x86_64_start_reservations+0x18/0x30
    x86_64_start_kernel+0xba/0x110
    common_startup_64+0x12c/0x138
unreferenced object 0x00042b00 (size 320):
  comm "swapper/0", pid 0, jiffies 4294667296
  hex dump (first 32 bytes on cpu 2):
    00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00  .....N..........
    ff ff ff ff ff ff ff ff c0 74 78 98 ff ff ff ff  .........tx.....
  backtrace (crc 0):
    pcpu_alloc_noprof+0x4ad/0xab0
    setup_zone_pageset+0x6e/0x290
    setup_per_cpu_pageset+0x6a/0x1f0
    start_kernel+0x2a4/0x410
    x86_64_start_reservations+0x18/0x30
    x86_64_start_kernel+0xba/0x110
    common_startup_64+0x12c/0x138
unreferenced object 0x00042dc0 (size 48):
  comm "swapper/0", pid 0, jiffies 4294667296
  hex dump (first 32 bytes on cpu 2):
    18 07 01 0b f3 00 00 ea 00 00 00 00 00 00 00 00  ................
    00 00 09 09 17 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace (crc 0):
    pcpu_alloc_noprof+0x4ad/0xab0
    setup_per_cpu_pageset+0xd2/0x1f0
    start_kernel+0x2a4/0x410
    x86_64_start_reservations+0x18/0x30
    x86_64_start_kernel+0xba/0x110
    common_startup_64+0x12c/0x138

This is unlikely to be important, but I'm not getting any hits on lore
so I figured better safe than sorry...