Subject: [Bug 215389] pagealloc: memory corruption at building glibc-2.33 and running its' testsuite

From: [email-masked]
Date: Mon, 18 Apr 2022 13:54:10 +0000

https://bugzilla.kernel.org/show_bug.cgi?id=215389

--- Comment #12 from Erhard F. ([email-masked]) ---
Created attachment 300774
  --> https://bugzilla.kernel.org/attachment.cgi?id=300774&action=edit
dmesg (5.18-rc3, PowerMac G4 DP)

Another try with running glibc-2.34 testsuite on kernel 5.18-rc3. Looks like
it's still a problem.

[...]
pagealloc: memory corruption
fffdfff0: 00 00 00 00                                      ....
CPU: 0 PID: 21222 Comm: install Not tainted 5.18.0-rc3-PMacG4 #5
Call Trace:
[f8085a70] [c06e8820] dump_stack_lvl+0x80/0xc0 (unreliable)
[f8085a90] [c02c0b2c] __kernel_unpoison_pages+0x1c0/0x204
[f8085ae0] [c02a4cb0] get_page_from_freelist+0xcb4/0xeb0
[f8085ba0] [c02a5754] __alloc_pages+0x184/0x11b4
[f8085c70] [c0230d50] __filemap_get_folio+0x224/0x598
[f8085cf0] [c0240ebc] pagecache_get_page+0x20/0x88
[f8085d10] [c04e2600] prepare_pages+0xf8/0x358
[f8085d60] [c04e4e54] btrfs_buffered_write+0x334/0x850
[f8085e20] [c04ea598] btrfs_do_write_iter+0x3a8/0x768
[f8085e80] [c02ee25c] vfs_write+0x364/0x488
[f8085f00] [c02ee52c] ksys_write+0x78/0x128
[f8085f30] [c001e1a8] ret_from_syscall+0x0/0x2c
--- interrupt: c00 at 0x5c5d08
NIP:  005c5d08 LR: 005c5ce0 CTR: c0289c9c
REGS: f8085f40 TRAP: 0c00   Not tainted  (5.18.0-rc3-PMacG4)
MSR:  0000f932 <EE,PR,FP,ME,IR,DR,RI>  CR: 28022464  XER: 20000000

GPR00: 00000004 af820720 a7ced760 00000006 a77aa000 00020000 00000000 00000000 
GPR08: 00120000 a77a9000 00000008 403d77ca 403d7497 0077fff4 00000000 00020000 
GPR16: 00000000 af8208c8 00020000 00000000 00000000 af821d2b a77aa000 00020000 
GPR24: 00000000 00000006 7ff00000 00000006 a77aa000 00020000 006c7ff4 00020000 
NIP [005c5d08] 0x5c5d08
LR [005c5ce0] 0x5c5ce0
--- interrupt: c00
page:ef4c4ec4 refcount:1 mapcount:0 mapping:00000000 index:0x1 pfn:0x31069
flags: 0x80000000(zone=2)
raw: 80000000 00000100 00000122 00000000 00000001 00000000 ffffffff 00000001
raw: 00000000
page dumped because: pagealloc: corrupted page detail

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