[Linux-next-6-10-20240722][PowerPC] Observing Kernel Warnings at kernel/time/timer_migration.c:1714
From: Venkat Rao Bagalkote
Date: Tue Jul 23 2024 - 00:02:27 EST
Greetings!!!
Observing kernel warnings at kernel/time/timer_migration.c:1714 while
booting with linux-next-6-10-20240722 kernel on PowerPC system.
[ 0.006496] ------------[ cut here ]------------
[ 0.006500] WARNING: CPU: 0 PID: 1 at
kernel/time/timer_migration.c:1714 tmigr_cpu_prepare+0x130/0x154
[ 0.006507] Modules linked in:
[ 0.006510] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted
6.10.0-next-20240722-auto #1
[ 0.006514] Hardware name: IBM,9009-42A POWER9 (architected) 0x4e0202
0xf000005 of:IBM,FW950.A0 (VL950_141) hv:phyp pSeries
[ 0.006515] NIP: c00000000029ac10 LR: c00000000016c4b4 CTR:
c00000000029aae0
[ 0.006517] REGS: c0000000bb4c7740 TRAP: 0700 Not tainted
(6.10.0-next-20240722-auto)
[ 0.006519] MSR: 8000000002029033 <SF,VEC,EE,ME,IR,DR,RI,LE> CR:
2800428f XER: 0000000d
[ 0.006527] CFAR: c00000000029ab24 IRQMASK: 0
[ 0.006527] GPR00: c00000000016c4b4 c0000000bb4c79e0 c0000000015a3d00
0000000000000000
[ 0.006527] GPR04: 0000000000000040 0000000000000001 0000000000000000
0000000000000000
[ 0.006527] GPR08: 00000007fadd0000 c00000000223c1b8 c000000002cfa568
c000000002cfa568
[ 0.006527] GPR12: c00000000029aae0 c000000003020000 c0000000000112ac
0000000000000000
[ 0.006527] GPR16: 0000000000000000 0000000000000000 0000000000000000
0000000000000000
[ 0.006527] GPR20: 0000000000000000 c000000002d0b210 c000000002c71e88
c0000007fd007808
[ 0.006527] GPR24: 0000000000000000 c00000000029aae0 c00000000029aae0
00000007fadd0000
[ 0.006527] GPR28: c000000002d0c000 c000000002237808 c0000007fd00c1b8
0000000000000000
[ 0.006553] NIP [c00000000029ac10] tmigr_cpu_prepare+0x130/0x154
[ 0.006557] LR [c00000000016c4b4] cpuhp_invoke_callback+0x1e4/0x7e8
[ 0.006562] Call Trace:
[ 0.006563] [c0000000bb4c79e0] [80000000ffff8000] 0x80000000ffff8000
(unreliable)
[ 0.006567] [c0000000bb4c7a20] [c0000000bb4c7af8] 0xc0000000bb4c7af8
[ 0.006569] [c0000000bb4c7ab0] [c00000000016d200]
cpuhp_issue_call+0x210/0x274
[ 0.006572] [c0000000bb4c7b00] [c00000000016d82c]
__cpuhp_setup_state_cpuslocked+0x1c4/0x3b0
[ 0.006576] [c0000000bb4c7bc0] [c00000000016de1c]
__cpuhp_setup_state+0xb8/0x1d8
[ 0.006580] [c0000000bb4c7c20] [c0000000020496a0] tmigr_init+0x1b0/0x254
[ 0.006586] [c0000000bb4c7c90] [c000000000010e78]
do_one_initcall+0x60/0x398
[ 0.006589] [c0000000bb4c7d70] [c000000002006ec4]
kernel_init_freeable+0x1d4/0x370
[ 0.006595] [c0000000bb4c7de0] [c0000000000112d8] kernel_init+0x34/0x26c
[ 0.006598] [c0000000bb4c7e50] [c00000000000df7c]
ret_from_kernel_user_thread+0x14/0x1c
[ 0.006600] --- interrupt: 0 at 0x0
[ 0.006602] Code: e8010050 eb810020 eba10028 3920ffea 38210040
ebc1fff0 2c0a0000 7c0803a6 7c69f89e ebe1fff8 7c6307b4 4e800020
<0fe00000> 4bffff14 60000000 60000000
[ 0.006612] ---[ end trace 0000000000000000 ]---
Bad Commit: 07d1022d1680b34a14e6390e3fa978f00c82dae4.
Reverting the above commit, issue is not seen.
Regards,
Venkat.