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Message-ID: <CA+G9fYs4-4y=edxddERXQ_fMsW_nUJU+V0bSMHFDL3St7NiLxQ@mail.gmail.com> Date: Tue, 25 Mar 2025 17:11:20 +0530 From: Naresh Kamboju <naresh.kamboju@...aro.org> To: PCI <linux-pci@...r.kernel.org>, open list <linux-kernel@...r.kernel.org>, lkft-triage@...ts.linaro.org, Linux Regressions <regressions@...ts.linux.dev> Cc: Bjorn Helgaas <bhelgaas@...gle.com>, Thomas Gleixner <tglx@...utronix.de>, Andy Shevchenko <andriy.shevchenko@...ux.intel.com>, Dan Carpenter <dan.carpenter@...aro.org>, shivamurthy.shastri@...utronix.de, Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>, Anders Roxell <anders.roxell@...aro.org>, Arnd Bergmann <arnd@...db.de> Subject: next-20250324: x86_64: BUG: kernel NULL pointer dereference __pci_enable_msi_range Regressions on x86_64 boot failed with Linux next-20250324 tag kernel 6.14.0-rc7-next-20250324 First seen on the next-20250324 Good: next-20250321 Bad: next-20250324 ..next-20250325 Regressions found on x86_84: - boot Regression Analysis: - New regression? Yes - Reproducible? Yes Boot regression: x86 boot fail kernel panic __pci_enable_msi_range Reported-by: Linux Kernel Functional Testing <lkft@...aro.org> ## Boot log <1>[ 1.525485] BUG: kernel NULL pointer dereference, address: 0000000000000002 <1>[ 1.525573] #PF: supervisor read access in kernel mode <1>[ 1.525573] #PF: error_code(0x0000) - not-present page <6>[ 1.525573] PGD 0 P4D 0 <4>[ 1.525573] Oops: Oops: 0000 [#1] SMP PTI <4>[ 1.525573] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 6.14.0-rc7-next-20250324 #1 PREEMPT(voluntary) <4>[ 1.525573] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 <4>[ 1.525573] RIP: 0010:__pci_enable_msi_range+0x306/0x6b0 <4>[ 1.525573] Code: ff ff ff e8 1c 05 fe ff f6 83 21 08 00 00 10 0f b7 85 6e ff ff ff 74 0c 0d 00 01 00 00 66 89 85 6e ff ff ff 8b 8d 68 ff ff ff <41> f6 44 24 02 40 74 0c 25 ff fe 00 00 66 89 85 6e ff ff ff 89 8d <4>[ 1.525573] RSP: 0000:ffffa83b00013740 EFLAGS: 00010246 <4>[ 1.525573] RAX: 0000000000000080 RBX: ffffa11c8023e000 RCX: 0000000000000001 <4>[ 1.525573] RDX: 0000000000000000 RSI: ffffffff9e60c683 RDI: ffffffff9e6519a8 <4>[ 1.525573] RBP: ffffa83b00013810 R08: 0000000000000002 R09: ffffa83b0001370c <4>[ 1.525573] R10: 0000000000000001 R11: ffffffff9e60c5b0 R12: 0000000000000000 <4>[ 1.525573] R13: 0000000000000000 R14: 0000000000000001 R15: ffffa11c8023e000 <4>[ 1.525573] FS: 0000000000000000(0000) GS:ffffa11d5c339000(0000) knlGS:0000000000000000 <4>[ 1.525573] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 <4>[ 1.525573] CR2: 0000000000000002 CR3: 000000007d844000 CR4: 00000000000006f0 <4>[ 1.525573] Call Trace: <4>[ 1.525573] <TASK> <4>[ 1.525573] ? __die_body+0xb4/0xc0 <4>[ 1.525573] ? __die+0x2e/0x40 <4>[ 1.525573] ? page_fault_oops+0x3ae/0x410 <4>[ 1.525573] ? kernelmode_fixup_or_oops+0x54/0x70 <4>[ 1.525573] ? __bad_area_nosemaphore+0x52/0x240 <4>[ 1.525573] ? bad_area_nosemaphore+0x16/0x20 <4>[ 1.525573] ? do_user_addr_fault+0x738/0x7a0 <4>[ 1.525573] ? irqentry_enter+0x2d/0x50 <4>[ 1.525573] ? exc_page_fault+0x4d/0x120 <4>[ 1.525573] ? exc_page_fault+0x70/0x120 <4>[ 1.525573] ? asm_exc_page_fault+0x2b/0x30 <4>[ 1.525573] ? __pfx_pci_conf1_read+0x10/0x10 <4>[ 1.525573] ? pci_conf1_read+0xd3/0xf0 <4>[ 1.525573] ? _raw_spin_unlock_irqrestore+0x28/0x50 <4>[ 1.525573] ? __pci_enable_msi_range+0x306/0x6b0 <4>[ 1.525573] ? _raw_spin_unlock_irqrestore+0x28/0x50 <4>[ 1.525573] pci_alloc_irq_vectors_affinity+0xbf/0x140 <4>[ 1.525573] pci_alloc_irq_vectors+0x15/0x20 <4>[ 1.525573] ahci_init_irq+0x90/0xc0 <4>[ 1.525573] ahci_init_one+0x82c/0xd10 <4>[ 1.525573] pci_device_probe+0x198/0x230 <4>[ 1.525573] really_probe+0x146/0x450 <4>[ 1.525573] __driver_probe_device+0x7a/0xf0 <4>[ 1.525573] driver_probe_device+0x24/0x190 <4>[ 1.525573] __driver_attach+0x104/0x250 <4>[ 1.525573] ? __pfx___driver_attach+0x10/0x10 <4>[ 1.525573] bus_for_each_dev+0x10e/0x160 <4>[ 1.525573] driver_attach+0x22/0x30 <4>[ 1.525573] bus_add_driver+0x175/0x2c0 <4>[ 1.525573] driver_register+0x65/0xf0 <4>[ 1.525573] ? __pfx_ahci_pci_driver_init+0x10/0x10 <4>[ 1.525573] __pci_register_driver+0x68/0x70 <4>[ 1.525573] ahci_pci_driver_init+0x22/0x30 <4>[ 1.525573] do_one_initcall+0x121/0x330 <4>[ 1.525573] ? alloc_pages_mpol+0x170/0x1c0 <4>[ 1.525573] ? alloc_pages_mpol+0x170/0x1c0 <4>[ 1.525573] ? trace_preempt_on+0x12/0x80 <4>[ 1.525573] ? alloc_pages_mpol+0x170/0x1c0 <4>[ 1.525573] ? preempt_count_sub+0x63/0x80 <4>[ 1.525573] ? alloc_pages_mpol+0x170/0x1c0 <4>[ 1.525573] ? trace_hardirqs_on+0x29/0xa0 <4>[ 1.525573] ? irqentry_exit+0x57/0x60 <4>[ 1.525573] ? sysvec_apic_timer_interrupt+0x52/0x90 <4>[ 1.525573] ? next_arg+0xcd/0x150 <4>[ 1.525573] ? next_arg+0x138/0x150 <4>[ 1.525573] ? parse_args+0x16e/0x440 <4>[ 1.525573] do_initcall_level+0x80/0xf0 <4>[ 1.525573] do_initcalls+0x48/0x80 <4>[ 1.525573] do_basic_setup+0x1d/0x30 <4>[ 1.525573] kernel_init_freeable+0x10c/0x180 <4>[ 1.525573] ? __pfx_kernel_init+0x10/0x10 <4>[ 1.525573] kernel_init+0x1e/0x130 <4>[ 1.525573] ret_from_fork+0x45/0x50 <4>[ 1.525573] ? __pfx_kernel_init+0x10/0x10 <4>[ 1.525573] ret_from_fork_asm+0x1a/0x30 <4>[ 1.525573] </TASK> <4>[ 1.525573] Modules linked in: <4>[ 1.525573] CR2: 0000000000000002 <4>[ 1.525573] ---[ end trace 0000000000000000 ]--- <4>[ 1.525573] RIP: 0010:__pci_enable_msi_range+0x306/0x6b0 <4>[ 1.525573] Code: ff ff ff e8 1c 05 fe ff f6 83 21 08 00 00 10 0f b7 85 6e ff ff ff 74 0c 0d 00 01 00 00 66 89 85 6e ff ff ff 8b 8d 68 ff ff ff <41> f6 44 24 02 40 74 0c 25 ff fe 00 00 66 89 85 6e ff ff ff 89 8d <4>[ 1.525573] RSP: 0000:ffffa83b00013740 EFLAGS: 00010246 <4>[ 1.525573] RAX: 0000000000000080 RBX: ffffa11c8023e000 RCX: 0000000000000001 <4>[ 1.525573] RDX: 0000000000000000 RSI: ffffffff9e60c683 RDI: ffffffff9e6519a8 <4>[ 1.525573] RBP: ffffa83b00013810 R08: 0000000000000002 R09: ffffa83b0001370c <4>[ 1.525573] R10: 0000000000000001 R11: ffffffff9e60c5b0 R12: 0000000000000000 <4>[ 1.525573] R13: 0000000000000000 R14: 0000000000000001 R15: ffffa11c8023e000 <4>[ 1.525573] FS: 0000000000000000(0000) GS:ffffa11d5c339000(0000) knlGS:0000000000000000 <4>[ 1.525573] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 <4>[ 1.525573] CR2: 0000000000000002 CR3: 000000007d844000 CR4: 00000000000006f0 <6>[ 1.525573] note: swapper/0[1] exited with irqs disabled <0>[ 1.553459] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009 <0>[ 1.553844] Kernel Offset: 0x1c000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) <0>[ 1.553844] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009 ]--- ## Source * Kernel version: 6.14.0-rc7-next-20250324 * Git tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git * Git sha: 882a18c2c14fc79adb30fe57a9758283aa20efaa * Git describe: next-20250324 * Project details: https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20250324/ ## Test * Test log: https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20250324/testrun/27735988/suite/boot/test/clang-20-lkftconfig/log * Test history: https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20250324/testrun/27735988/suite/boot/test/clang-20-lkftconfig/history/ * Test details: https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20250324/testrun/27735936/suite/boot/test/clang-20-lkftconfig/ * Build link: https://storage.tuxsuite.com/public/linaro/lkft/builds/2ulLSNJUAxmyv6UZdUMeoptIZNn/ * Kernel config: https://storage.tuxsuite.com/public/linaro/lkft/builds/2ulLSNJUAxmyv6UZdUMeoptIZNn/config -- Linaro LKFT https://lkft.linaro.org
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