Hi, With pmac32_defconfig on QEMU I get the following WARN with 6.6-rc1
Bisected to cfeb6ae8bcb9 ("maple_tree: disable mas_wr_append() when other readers are possible") I have absolutely no idea what it can be, do you ? ------------[ cut here ]------------ Interrupts were enabled early WARNING: CPU: 0 PID: 0 at init/main.c:992 start_kernel+0x4d8/0x5c0 Modules linked in: CPU: 0 PID: 0 Comm: swapper Not tainted 6.6.0-rc1 #480 Hardware name: PowerMac3,1 7400 0xc0209 PowerMac NIP: c0a6052c LR: c0a6052c CTR: 00000000 REGS: c0c4dee0 TRAP: 0700 Not tainted (6.6.0-rc1) MSR: 00029032 <EE,ME,IR,DR,RI> CR: 24000282 XER: 20000000 GPR00: c0a6052c c0c4dfa0 c0b92580 0000001d c0b9d128 00000001 c0b9d148 3ffffdff GPR08: c0ba80f0 00000000 00000000 3ffffe00 44000282 00000000 00000000 0199abf8 GPR16: 0199b0a0 7fde7fa4 7fc5ac0c 000000bb 41000000 01c690c8 c0b92014 c09b4bcc GPR24: c0c55220 c0ac0000 00000000 efff9109 efff9100 0000000a c0c6d000 c0b920a0 NIP [c0a6052c] start_kernel+0x4d8/0x5c0 LR [c0a6052c] start_kernel+0x4d8/0x5c0 Call Trace: [c0c4dfa0] [c0a6052c] start_kernel+0x4d8/0x5c0 (unreliable) [c0c4dff0] [00003540] 0x3540 Code: 480037b1 48023c05 4bab88cd 90620260 480139e9 4b657ccd 7d2000a6 71298000 41a20014 3c60c09a 3863b788 4b5e9ccd <0fe00000> 39200000 99380008 7d2000a6 ---[ end trace 0000000000000000 ]--- Christophe