On Thu, Aug 27, 2026 at 10:37:00PM -0700, Farhad Alemi wrote: > 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/
Please describe instead in plain Enligsh what is going. Hopping into random Github links is not the best possible way to communicate. > > 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, BR, Jarkko
