PowerPC: Random memory corruption causing kernel oops on Power11
From: Venkat Rao Bagalkote <hidden>
Date: 2026-05-29 06:50:42
Also in:
lkml
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From: Venkat Rao Bagalkote <hidden>
Date: 2026-05-29 06:50:42
Also in:
lkml
Greetings!!! Kernel 7.1.0-rc5-next-20260528 crashes randomly on IBM Power11 hardware. Attached is the config file. **System:** - Hardware: IBM 9080-HEX Power11, pSeries - Broken: 7.1.0-rc5-next-20260528 - Config: 64K pages, Radix MMU **Problem:** Different crash at each reboot. **Example Crash 1:** [ 4.678016] BUG: Unable to handle kernel data access at 0xbffffffefec10628 [ 4.678112] NIP [c008000004e3c74c] xfs_dir2_block_lookup_int+0xd4/0x300 [xfs] [ 4.678281] [c000000005eaf7d0] [c008000004e3c6d4] xfs_dir2_block_lookup_int+0x5c/0x300 [xfs] [ 4.678363] [c000000005eaf850] [c008000004e3d56c] xfs_dir2_block_lookup+0x44/0x1e0 [xfs] **Example Crash 2:** [ 6.327116] BUG: Unable to handle kernel data access at 0x762f736563697695 [ 6.327242] NIP [c00000000073cf34] __refill_obj_stock+0x74/0x2c0 [ 6.327261] [c0000013ffdbfd10] [c0000000007418b8] obj_cgroup_uncharge+0x48/0x70 [ 6.327271] [c0000013ffdbfd50] [c00000000062fffc] free_percpu.part.0+0x12c/0x630 If you happen to fix this, please add below tag. Reported-by: Venkat Rao Bagalkote <redacted> Regards, Venkat.