Subject: [Bug 213837] "Kernel panic - not syncing: corrupted stack end detected inside scheduler" at building via distcc on a G5

From: [email-masked]
Date: Fri, 20 Aug 2021 16:34:22 +0000

https://bugzilla.kernel.org/show_bug.cgi?id=213837

--- Comment #2 from Erhard F. ([email-masked]) ---
Created attachment 298393
  --> https://bugzilla.kernel.org/attachment.cgi?id=298393&action=edit
dmesg (5.14-rc6, PowerMac G5 11,2)

Happens also on 5.14-rc6:

[...]
Kernel panic - not syncing: corrupted stack end detected inside scheduler
CPU: 1 PID: 32354 Comm: powerpc64-unkno Tainted: G        W        
5.14.0-rc6-PowerMacG5+ #3
Call Trace:
[c000000062feb4c0] [c00000000054de04] .dump_stack_lvl+0x98/0xe0 (unreliable)
[c000000062feb550] [c000000000068f4c] .panic+0x160/0x40c
[c000000062feb600] [c000000000818d3c] .__schedule+0x7c/0x840
[c000000062feb6d0] [c00000000081964c] .preempt_schedule_common+0x28/0x48
[c000000062feb750] [c00000000081969c] .__cond_resched+0x30/0x4c
[c000000062feb7d0] [c0000000004ee8f8] .copy_page_to_iter+0xbc/0x32c
[c000000062feb8a0] [c0000000001c9c20] .filemap_read+0x574/0x618
[c000000062feba60] [c000000000333c18] .ext4_file_read_iter+0xb8/0x11c
[c000000062febb00] [c000000000275488] .new_sync_read+0x94/0xe0
[c000000062febc00] [c000000000276c2c] .vfs_read+0x128/0x12c
[c000000062febca0] [c000000000276fc4] .ksys_read+0x78/0xc4
[c000000062febd60] [c000000000022808] .system_call_exception+0x1a4/0x1dc
[c000000062febe10] [c00000000000b4cc] system_call_common+0xec/0x250
--- interrupt: c00 at 0x3fff999e0cd0
NIP:  00003fff999e0cd0 LR: 00000001039d3660 CTR: 0000000000000000
REGS: c000000062febe80 TRAP: 0c00   Tainted: G        W         
(5.14.0-rc6-PowerMacG5+)
MSR:  900000000200f032 <SF,HV,VEC,EE,PR,FP,ME,IR,DR,RI>  CR: 24000442  XER:
00000000
IRQMASK: 0 
GPR00: 0000000000000003 00003ffff4e23690 00003fff99a0df00 0000000000000004 
GPR04: 00003fff99699010 00000000000583ca 00003fff999c1320 0000000000000000 
GPR08: 00003fff999c12e0 0000000000000000 0000000000000000 0000000000000000 
GPR12: 0000000000000000 00003fff99a93c20 000000011fbcf950 000000017149a1d0 
GPR16: 00000001039dec38 00003ffff4e23b78 00000001039deb28 00003ffff4e239c8 
GPR20: 00003ffff4e23d80 ffffffffffffffff 000000011fbce540 0000000000000000 
GPR24: 000000011fbcf930 000000011fbcfa90 0000000000000005 00003ffff4e238e0 
GPR28: 0000000103a268e8 0000000000000004 00003fff99699010 00000000000583ca 
NIP [00003fff999e0cd0] 0x3fff999e0cd0
LR [00000001039d3660] 0x1039d3660
--- interrupt: c00
Rebooting in 40 seconds..

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