Hi, While trying to debug something in qla2xxx I enabled KASAN. As it turns out, KASAN finds something in lpfc (and not qla2xxx so far). I was able to reproduce this with v5.8-rc4 and the current mkp/queue branch. Almost all memory debug options are enabled. Not sure which one is able to trigger this: ------------[ cut here ]------------ kernel BUG at arch/x86/mm/physaddr.c:28! invalid opcode: 0000 [#1] SMP DEBUG_PAGEALLOC KASAN PTI CPU: 0 PID: 1083 Comm: kworker/0:4 Tainted: G E 5.8.0-rc4-default+ #59 Hardware name: HP ProLiant DL580 Gen9/ProLiant DL580 Gen9, BIOS U17 07/21/2019 Workqueue: events work_for_cpu_fn RIP: 0010:__phys_addr+0x59/0x80 Code: 4c 39 e3 72 25 48 c7 c7 55 85 e7 87 e8 00 8d 39 00 0f b6 0d 6e e7 1a 02 4c 89 e0 48 d3 e8 48 85 c0 75 07 4c 89 e$ RSP: 0018:ffff88842b9ff990 EFLAGS: 00010202 RAX: 0000000000000001 RBX: ffffc90086598000 RCX: 000000000000002e RDX: 1ffffffff0fcf0aa RSI: 0000000000000001 RDI: ffffffff87e78555 RBP: ffffc90006598000 R08: ffffffffc109fb97 R09: 0000000000000000 R10: 0000000000000003 R11: ffffed108573ff0c R12: 0000408006598000 R13: 0000000000000001 R14: ffff88842baac000 R15: ffff88843bc43800 FS: 0000000000000000(0000) GS:ffff888812800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5a28f8a4b6 CR3: 00000019b240e001 CR4: 00000000001606f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: set_memory_wc+0x1d/0x90 lpfc_wq_create+0x67e/0x920 [lpfc] lpfc_create_wq_cq+0xde/0x240 [lpfc] lpfc_sli4_queue_setup+0x489/0xc70 [lpfc] lpfc_sli4_hba_setup+0xf4c/0x26d0 [lpfc] ? kernfs_add_one+0x1b1/0x210 ? __kernfs_create_file+0xe3/0x120 ? lpfc_sli_read_link_ste+0x550/0x550 [lpfc] ? lpfc_cpu_affinity_check.isra.0+0x5e3/0xa00 [lpfc] ? lpfc_pci_probe_one_s4.isra.0+0x3b4/0x540 [lpfc] lpfc_pci_probe_one_s4.isra.0+0x3b4/0x540 [lpfc] ? lpfc_pci_probe_one_s4.isra.0+0x540/0x540 [lpfc] lpfc_pci_probe_one+0xbb/0xd0 [lpfc] ? lpfc_pci_probe_one_s4.isra.0+0x540/0x540 [lpfc] ? __pm_runtime_resume+0x42/0x70 local_pci_probe+0x74/0xc0 ? pci_device_shutdown+0x80/0x80 work_for_cpu_fn+0x29/0x40 process_one_work+0x483/0x7e0 worker_thread+0x465/0x690 ? process_one_work+0x7e0/0x7e0 kthread+0x19f/0x1f0 ? kthread_parkme+0x40/0x40 ret_from_fork+0x22/0x30 Modules linked in: mgag200(E+) drm_vram_helper(E) lpfc(E+) drm_kms_helper(E) sd_mod(E) nvmet_fc(E) syscopyarea(E) sysf$ ---[ end trace 404edaadb5917ff2 ]--- Thanks, Daniel
