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[70.52.22.87]) by smtp.gmail.com with ESMTPSA id 006d021491bc7-5fd01ec0ebbsm100634eaf.20.2025.02.18.18.27.19 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 18 Feb 2025 18:27:20 -0800 (PST) Message-ID: Date: Tue, 18 Feb 2025 21:27:18 -0500 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-US, en-CA From: Luiz Capitulino Subject: kernel BUG at arch/arm64/mm/mmu.c:185! To: LKML , linux-mm@kvack.org Cc: ardb@kernel.org, ryan.roberts@arm.com Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Hi, I'm getting the crash below with Linus tree commit 2408a807bfc3f738850ef5ad5e3fd59d66168996 on a Ampere Mt. Jade with two sockets (backtrace below). It happens very early during boot. Passing 'nokaslr' in the command-line works around the issue (ie. I can boot and use the system normally). Doesn't seem to happen with 6.13. I tried bisecting it but got nowhere... [ 0.000000] ------------[ cut here ]------------ [ 0.000000] kernel BUG at arch/arm64/mm/mmu.c:185! [ 0.000000] Internal error: Oops - BUG: 00000000f2000800 [#1] SMP [ 0.000000] Modules linked in: [ 0.000000] CPU: 0 UID: 0 PID: 0 Comm: swapper Not tainted 6.14.0-rc3+ #8 [ 0.000000] pstate: 400000c9 (nZcv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 0.000000] pc : alloc_init_cont_pte+0x20c/0x3d0 [ 0.000000] lr : alloc_init_cont_pte+0x204/0x3d0 [ 0.000000] sp : ffffb45836ec78b0 [ 0.000000] x29: ffffb45836ec7940 x28: ffff6fea00000000 x27: 0068000000000f07 [ 0.000000] x26: ffff6fea00200000 x25: 0000400000000000 x24: ffffffffff433000 [ 0.000000] x23: dfff800000000000 x22: 0000d01600000000 x21: 0068000000000f07 [ 0.000000] x20: ffff6fea00000000 x19: ffff6fea00010000 x18: 00000000ae5a3fb1 [ 0.000000] x17: 0000000000001114 x16: 00000000bfc60000 x15: 0000000000000200 [ 0.000000] x14: 0000000000000000 x13: 1ffff68b06dd8f1c x12: 00000000f1f1f1f1 [ 0.000000] x11: ffff768b06dd8f1c x10: ffffb45835a1ca38 x9 : 0000000000000000 [ 0.000000] x8 : 0000000041b58ab3 x7 : 0000000000000000 x6 : 0000000000000000 [ 0.000000] x5 : 006840000a861f07 x4 : 000000000000a861 x3 : 000000000000a861 [ 0.000000] x2 : 006840000a861f03 x1 : 0068400000000f07 x0 : 0000000000000000 [ 0.000000] Call trace: [ 0.000000] alloc_init_cont_pte+0x20c/0x3d0 (P) [ 0.000000] alloc_init_cont_pmd+0x20c/0x4d0 [ 0.000000] alloc_init_pud+0x244/0x400 [ 0.000000] create_kpti_ng_temp_pgd+0xf8/0x1c8 [ 0.000000] map_mem.constprop.0+0x1d8/0x3b8 [ 0.000000] paging_init+0x98/0x330 [ 0.000000] setup_arch+0xac/0x170 [ 0.000000] start_kernel+0x74/0x3c8 [ 0.000000] __primary_switched+0x8c/0xa0 [ 0.000000] Code: f9400301 97ffff64 72001c1f 54fffe21 (d4210000) [ 0.000000] ---[ end trace 0000000000000000 ]--- [ 0.000000] Kernel panic - not syncing: Oops - BUG: Fatal exception [ 0.000000] ---[ end Kernel panic - not syncing: Oops - BUG: Fatal exception ]---