On Mon, 2 Mar 2020 15:03:29 -0800 Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote: > > (switched to email. Please respond via emailed reply-to-all, not via the > bugzilla web interface). > > On Mon, 02 Mar 2020 21:55:10 +0000 bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote: > > > https://bugzilla.kernel.org/show_bug.cgi?id=206697 > > > > --- Comment #2 from Erhard F. (erhard_f@xxxxxxxxxxx) --- > > Created attachment 287765 > > --> https://bugzilla.kernel.org/attachment.cgi?id=287765&action=edit > > dmesg (kernel 5.6-rc4, Shuttle XPC FS51, Pentium 4) > > > > Same on kernel 5.6-rc4: > > Thanks. This looks like a regression in the DRM code. I've added > suitable Ccs. Erhard, please let's handle this issue via email, not via the bugzilla interface. This does appear to be a DRM issue, and it has been reproduced in 5.7-rc1. Latest update below: From: bugzilla-daemon@xxxxxxxxxxxxxxxxxxx To: akpm@xxxxxxxxxxxxxxxxxxxx Subject: [Bug 206697] #PF: supervisor read access in kernel mode, #PF: error_code(0x0000) - not-present page while building a large project Date: Fri, 17 Apr 2020 07:45:23 +0000 https://bugzilla.kernel.org/show_bug.cgi?id=206697 --- Comment #5 from Erhard F. (erhard_f@xxxxxxxxxxx) --- Looks mostly the same on kernel 5.7-rc1. The line after kthread+0xd1/0xd3 is different. It was "? try_to_free_pages+0x3d4/0x3d4" on 5.5.6 and 5.6-rc4, but is "? shrink_node+0x6f2/0x6f2" on 5.7-rc1 now. [...] Apr 17 00:28:40 BUG: kernel NULL pointer dereference, address: 00000000 Apr 17 00:28:40 #PF: supervisor read access in kernel mode Apr 17 00:28:40 #PF: error_code(0x0000) - not-present page Apr 17 00:28:40 *pde = 00000000 Apr 17 00:28:40 Oops: 0000 [#1] SMP Apr 17 00:28:40 CPU: 0 PID: 53 Comm: kswapd0 Not tainted 5.7.0-rc1-Pentium4 #1 Apr 17 00:28:40 Hardware name: /FS51, BIOS 6.00 PG 12/02/2003 Apr 17 00:28:40 EIP: __cpa_process_fault+0x205/0x226 Apr 17 00:28:40 Code: 2d 00 00 00 40 39 d0 76 1f 81 fa ff ff ff bf 76 17 c7 47 10 01 00 00 00 81 c3 00 00 00 40 c1 eb 0c 89 5f 18 31 f6 eb 19 8b 07 <ff> 30 53 68 d5 c7 cb d8 e8 cb 68 00 00 0f 0b> Apr 17 00:28:40 EAX: 00000000 EBX: 00000000 ECX: 00000001 EDX: 00000000 Apr 17 00:28:40 ESI: 00000001 EDI: f5e5bd4c EBP: f5e5bcc4 ESP: f5e5bca0 Apr 17 00:28:40 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010213 Apr 17 00:28:40 CR0: 80050033 CR2: 00000000 CR3: 05ab3000 CR4: 000006d0 Apr 17 00:28:40 Call Trace: Apr 17 00:28:40 ? _raw_spin_lock+0x22/0x2a Apr 17 00:28:40 ? lookup_address+0x1d/0x20 Apr 17 00:28:40 __change_page_attr_set_clr+0x85/0x551 Apr 17 00:28:40 ? __mutex_unlock_slowpath+0x20/0x1b6 Apr 17 00:28:40 ? mutex_unlock+0xb/0xd Apr 17 00:28:40 ? _vm_unmap_aliases.part.0+0x11f/0x127 Apr 17 00:28:40 change_page_attr_set_clr+0xdc/0x1af Apr 17 00:28:40 set_pages_array_wb+0x20/0x7b Apr 17 00:28:40 ttm_pages_put+0x22/0x71 [ttm] Apr 17 00:28:40 ttm_page_pool_free+0xa1/0x111 [ttm] Apr 17 00:28:40 ttm_pool_shrink_scan+0x9c/0xd1 [ttm] Apr 17 00:28:40 shrink_slab.constprop.0+0x248/0x38f Apr 17 00:28:40 shrink_node+0x533/0x6f2 Apr 17 00:28:40 kswapd+0x4b6/0x628 Apr 17 00:28:40 ? kswapd+0x4b6/0x628 Apr 17 00:28:40 kthread+0xd1/0xd3 Apr 17 00:28:40 ? shrink_node+0x6f2/0x6f2 Apr 17 00:28:40 ? kthread_delayed_work_timer_fn+0x6a/0x6a Apr 17 00:28:40 ret_from_fork+0x2e/0x38 Apr 17 00:28:40 Modules linked in: fuse auth_rpcgss nfsv4 dns_resolver nfs lockd grace sunrpc rt2500pci eeprom_93cx6 rt2x00pci rt2x00mmio rt2x00lib led_class mac80211 radeon hwmon i2c_algo_bit d> Apr 17 00:28:40 CR2: 0000000000000000 Apr 17 00:28:40 ---[ end trace 49fbdfbb6e459a06 ]--- Apr 17 00:28:40 EIP: __cpa_process_fault+0x205/0x226 Apr 17 00:28:40 Code: 2d 00 00 00 40 39 d0 76 1f 81 fa ff ff ff bf 76 17 c7 47 10 01 00 00 00 81 c3 00 00 00 40 c1 eb 0c 89 5f 18 31 f6 eb 19 8b 07 <ff> 30 53 68 d5 c7 cb d8 e8 cb 68 00 00 0f 0b> Apr 17 00:28:40 EAX: 00000000 EBX: 00000000 ECX: 00000001 EDX: 00000000 Apr 17 00:28:40 ESI: 00000001 EDI: f5e5bd4c EBP: f5e5bcc4 ESP: f5e5bca0 Apr 17 00:28:40 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 EFLAGS: 00010213 Apr 17 00:28:40 CR0: 80050033 CR2: 00000000 CR3: 05ab3000 CR4: 000006d0 -- You are receiving this mail because: You are the assignee for the bug. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
