Source: linux Version: 5.18.2-1 Severity: normal -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256
Since kernel 5.18.2-1 I'm getting the following error/message in dmesg: [ 0.465573] DMAR: Intel(R) Virtualization Technology for Directed I/O [ 0.465579] PCI-DMA: Using software bounce buffering for IO (SWIOTLB) [ 0.465581] software IO TLB: mapped [mem 0x0000000049be6000-0x000000004dbe6000] (64MB) [ 0.465676] sgx: EPC section 0x50200000-0x55f7ffff [ 0.466859] ------------[ cut here ]------------ [ 0.466863] WARNING: CPU: 1 PID: 55 at arch/x86/kernel/cpu/sgx/main.c:446 ksgxd+0x1b3/0x1c0 [ 0.466877] Modules linked in: [ 0.466881] CPU: 1 PID: 55 Comm: ksgxd Not tainted 5.18.0-1-amd64 #1 Debian 5.18.2-1 [ 0.466887] Hardware name: LENOVO 20HRCTO1WW/20HRCTO1WW, BIOS N1MET70W (1.55 ) 07/07/2022 [ 0.466889] RIP: 0010:ksgxd+0x1b3/0x1c0 [ 0.466896] Code: ff e9 f6 fe ff ff 48 89 df e8 99 dd 0c 00 84 c0 0f 84 c7 fe ff ff 31 ff e8 fa dd 0c 00 84 c0 0f 85 98 fe ff ff e9 b3 fe ff ff <0f> 0b e9 83 fe ff ff e8 a1 d8 90 00 90 0f 1f 44 00 00 41 57 48 c1 [ 0.466903] RSP: 0000:ffffb24640463ed8 EFLAGS: 00010283 [ 0.466913] RAX: ffffb246403a1970 RBX: ffff9104c2753400 RCX: 0000000000000000 [ 0.466922] RDX: 0000000080000000 RSI: ffffb246403a1930 RDI: 00000000ffffffff [ 0.466925] RBP: ffff9104c1345300 R08: ffff9104c13456c0 R09: ffff9104c13456c0 [ 0.466928] R10: 0000000000000000 R11: 0000000000000001 R12: ffffb24640073ce0 [ 0.466930] R13: ffff9104c2789980 R14: ffffffffa0a5c1c0 R15: 0000000000000000 [ 0.466933] FS: 0000000000000000(0000) GS:ffff910851680000(0000) knlGS:0000000000000000 [ 0.466937] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 0.466940] CR2: 0000000000000000 CR3: 000000042d210001 CR4: 00000000003706e0 [ 0.466943] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 0.466945] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 0.466948] Call Trace: [ 0.466952] <TASK> [ 0.466956] ? _raw_spin_lock_irqsave+0x24/0x50 [ 0.466976] ? _raw_spin_unlock_irqrestore+0x23/0x40 [ 0.466982] ? __kthread_parkme+0x36/0x80 [ 0.466990] kthread+0xe8/0x110 [ 0.466994] ? kthread_complete_and_exit+0x20/0x20 [ 0.466998] ret_from_fork+0x22/0x30 [ 0.467008] </TASK> [ 0.467010] ---[ end trace 0000000000000000 ]--- [ 0.468117] Initialise system trusted keyrings [ 0.468137] Key type blacklist registered [ 0.468217] workingset: timestamp_bits=36 max_order=22 bucket_order=0 [ 0.472438] zbud: loaded It does NOT occur with version 5.17.3-1 and 5.18-1~exp1, but it does occur with 5.18.2-1, 5.18.16-1, 5.19.6-1 and I first noticed it with a self-compiled 6.0-rc6 (custom branch based on Debian kernel's master branch). Where it does NOT occur, there is no message containing 'sgx' in dmesg at all and where it DOES occur it appears to be the same with only a variantion in line number with ``arch/x86/kernel/cpu/sgx/main.c`` There are 5 commits with 'sgx' in their primary commit message: diederik@prancing-pony:~/dev/kernel.org/linux$ git log --oneline v5.18..v5.18.2 | grep -ci sgx 5 And they are all sequential: $ git log --oneline 557b6a9ccceeec1ae13a83b4490458b92e064c0e..5aada654649d9bcf6b89d7c0d1ff4b794f9295d3 5aada654649d media: i2c: imx412: Fix reset GPIO polarity 22e83371210d x86/sgx: Ensure no data in PCMD page after truncate 0e1f97633953 x86/sgx: Fix race between reclaimer and page fault handler 69432ff18091 x86/sgx: Obtain backing storage page with enclave mutex held 876053dd7503 x86/sgx: Mark PCMD page as dirty when modifying contents 5ded81f42258 x86/sgx: Disconnect backing page references from dirty status 6ad9dbb202a9 HID: multitouch: add quirks to enable Lenovo X12 trackpoint But I haven't verified that the issue got introduced with one of them. No idea if it could be relevant, but the SGX related section in my BIOS has the following settings (on a Lenovo ThinkPad X1 Carbon 5th gen): Intel (R) SGX Control: Software Controlled Current State: Enabled (And an item to 'Change Owner EPOCH') I haven't changed those settings between reboots with the various kernels (or ever AFAIR). - -- System Information: Debian Release: bookworm/sid APT prefers testing APT policy: (990, 'testing'), (500, 'stable-security'), (500, 'unstable'), (500, 'stable') Architecture: amd64 (x86_64) Kernel: Linux 5.18.0-1-amd64 (SMP w/4 CPU threads; PREEMPT) Kernel taint flags: TAINT_WARN Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled -----BEGIN PGP SIGNATURE----- iHUEARYIAB0WIQT1sUPBYsyGmi4usy/XblvOeH7bbgUCYyzEdQAKCRDXblvOeH7b blRMAQDxcH2fNVpKGoGU6AupSn7uQKSuNI0daaf+XKDCXbYiswD/T7R54kdPqh7L xIpNsQJijfZ2r6+jVQ+232GODcbCkAs= =B9if -----END PGP SIGNATURE-----
