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CVE ID: | CVE-2024-26783 |
Description: | In the Linux kernel, the following vulnerability has been resolved:
mm/vmscan: fix a bug calling wakeup_kswapd() with a wrong zone index
With numa balancing on, when a numa system is running where a numa
node doesn't have its local memory so it has no managed zones, the
following oops has been observed. It's because wakeup_kswapd() is
called with a wrong zone index, -1. Fixed it by checking the index
before calling wakeup_kswapd(). > BUG: unable to handle page fault for
address: 00000000000033f3 > #PF: supervisor read access in kernel mode
> #PF: error_code(0x0000) - not-present page > PGD 0 P4D 0 > Oops:
0000 [#1] PREEMPT SMP NOPTI > CPU: 2 PID: 895 Comm: masim Not tainted
6.6.0-dirty #255 > Hardware name: QEMU Standard PC (i440FX + PIIX,
1996), BIOS > rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014
> RIP: 0010:wakeup_kswapd (./linux/mm/vmscan.c:7812) > Code: (omitted)
> RSP: 0000:ffffc90004257d58 EFLAGS: 00010286 > RAX: ffffffffffffffff
RBX: ffff88883fff0480 RCX: 0000000000000003 > RDX: 0000000000000000
RSI: 0000000000000000 RDI: ffff88883fff0480 > RBP: ffffffffffffffff
R08: ff0003ffffffffff R09: ffffffffffffffff > R10: ffff888106c95540
R11: 0000000055555554 R12: 0000000000000003 > R13: 0000000000000000
R14: 0000000000000000 R15: ffff88883fff0940 > FS:
00007fc4b8124740(0000) GS:ffff888827c00000(0000)
knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033 > CR2: 00000000000033f3 CR3: 000000026cc08004 CR4:
0000000000770ee0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400 > PKRU: 55555554 > Call Trace: > |
Test IDs: | None available |
Cross References: |
Common Vulnerability Exposure (CVE) ID: CVE-2024-26783 https://git.kernel.org/stable/c/2774f256e7c0219e2b0a0894af1c76bdabc4f974 https://git.kernel.org/stable/c/2774f256e7c0219e2b0a0894af1c76bdabc4f974 https://git.kernel.org/stable/c/bdd21eed8b72f9e28d6c279f6db258e090c79080 https://git.kernel.org/stable/c/bdd21eed8b72f9e28d6c279f6db258e090c79080 https://git.kernel.org/stable/c/d6159bd4c00594249e305bfe02304c67c506264e https://git.kernel.org/stable/c/d6159bd4c00594249e305bfe02304c67c506264e |