Hello, As part of the kernel research at ASU's SEFCOM lab, we hit the crash below. Crash reports can be found here:
https://github.com/farhad-alemi/public_bug_reports/tree/main/154-tpm_tis-borrowed-resource-fixed-offset-read/ BUG: unable to handle page fault for address: ffffc90000a17310 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page Oops: Oops: 0000 [#1] SMP KASAN NOPTI RIP: 0010:ioread32+0x1c/0x80 Call Trace: ioread32+0x1c/0x80 tpm_tcg_read_bytes+0xec/0x270 tpm_tis_core_init+0x48c/0x1830 tpm_tis_init+0x420/0x540 tpm_tis_plat_probe+0x118/0x1a0 platform_probe+0xf9/0x190 really_probe+0x267/0xaf0 device_driver_attach+0xe0/0x1d0 bind_store+0x1d0/0x220 kernfs_fop_write_iter+0x3af/0x540 ksys_write+0x150/0x270 Kernel panic - not syncing: Fatal exception Our reproducer.c is available upon request. Happy to test a patch if that would help. Regards,
