Hi Marc, with 4.20-rc3 I see two WARN_ON's firing on a ThunderX2 system that come from commit 3fb68faee867 (irqchip/gic-v3-its: Register LPI tables with EFI config table).
Global efi_memreserve_root is NULL as it will only be set when early initcalls are running, but from the backtrace the WARN_ON's are running even earlier (init_IRQ). Am I the only one seeing this? [ 0.000000] WARNING: CPU: 0 PID: 0 at drivers/irqchip/irq-gic-v3-its.c:1696 its_init+0x36c/0x608 [ 0.000000] Modules linked in: [ 0.000000] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.20.0-rc3-jang+ #69 [ 0.000000] pstate: 60000089 (nZCv daIf -PAN -UAO) [ 0.000000] pc : its_init+0x36c/0x608 [ 0.000000] lr : its_init+0x368/0x608 [ 0.000000] sp : ffff000008e53c60 [ 0.000000] x29: ffff000008e53c60 x28: ffff7dfffe6807a4 [ 0.000000] x27: 0000000000000001 x26: ffff80267b4c2100 [ 0.000000] x25: ffff000008ffe930 x24: ffff000008e5d9c8 [ 0.000000] x23: ffff80267bc10300 x22: ffff000008e5d9c8 [ 0.000000] x21: ffff000008e59000 x20: ffff000008f12000 [ 0.000000] x19: ffff000008ffe000 x18: ffffffffffffffff [ 0.000000] x17: 0000000000000009 x16: 0000000000000000 [ 0.000000] x15: ffff000008e59648 x14: ffff000088fa616f [ 0.000000] x13: ffff000008fa617d x12: ffff000008e7e000 [ 0.000000] x11: ffff000008e53900 x10: ffff000008e59eb0 [ 0.000000] x9 : ffff000008e3e018 x8 : ffff00000875ac58 [ 0.000000] x7 : 206f6e203a746e65 x6 : 000000000000018c [ 0.000000] x5 : 0000000000000001 x4 : 0000000000000000 [ 0.000000] x3 : 0000000000000001 x2 : 4f419eae5e0eb800 [ 0.000000] x1 : 0000000000000000 x0 : 00000000ffffffed [ 0.000000] Call trace: [ 0.000000] its_init+0x36c/0x608 [ 0.000000] gic_init_bases+0x288/0x300 [ 0.000000] gic_acpi_init+0x124/0x248 [ 0.000000] acpi_match_madt+0x4c/0x88 [ 0.000000] acpi_table_parse_entries_array+0x134/0x220 [ 0.000000] acpi_table_parse_entries+0x70/0x98 [ 0.000000] acpi_table_parse_madt+0x40/0x50 [ 0.000000] __acpi_probe_device_table+0x88/0xe4 [ 0.000000] irqchip_init+0x38/0x40 [ 0.000000] init_IRQ+0xcc/0x100 [ 0.000000] start_kernel+0x2fc/0x490 [ 0.000000] ---[ end trace 41868d15bb5cf8f6 ]--- --Jan
