Re: [Bug 216646] having TRANSPARENT_HUGEPAGE enabled hangs some applications (supervisor read access in kernel mode)
From: Mikhail Pletnev <hidden>
Date: 2022-12-06 02:08:51
On Mon, 5 Dec 2022 20:25:11 +0000 Matthew Wilcox [off-list ref] wrote:
Thanks! I think this may be the problem ...
Hi Matthew, thanks for swift response, i've applied your last patch and ran my stress test a couple of times. It's still constistently crashing (albeit it seems in a different place): [ 1975.257126] ***BAD SIBLING*** index 912583 offset 4 [ 1975.257128] node ffff9fc817e01ff0 offset 51 parent ffff9fc5c7a31ff0 shift 0 count 64 values 48 array ffff9fc521173e80 list ffff9fc817e02008 ffff9fc817e02008 marks 0 0 0 [ 1975.257133] BUG: kernel NULL pointer dereference, address: 0000000000000036 [ 1975.257135] #PF: supervisor read access in kernel mode [ 1975.257137] #PF: error_code(0x0000) - not-present page [ 1975.257138] PGD 0 P4D 0 [ 1975.257139] Oops: 0000 [#1] PREEMPT SMP NOPTI [ 1975.257141] CPU: 5 PID: 8303 Comm: deluge-gtk Not tainted 5.17.0-rc4_ap_test-00163-g793917d997df-dirty #6 [ 1975.257144] Hardware name: Micro-Star International Co., Ltd. MS-7C35/MEG X570 UNIFY (MS-7C35), BIOS A.C3 03/15/2022 [ 1975.257146] RIP: 0010:__filemap_get_folio (/home/reinhardt/dev-apps/kernel/linux/./arch/x86/include/asm/atomic.h:29 /home/reinhardt/dev-apps/kernel/linux/./include/linux/atomic/atomic-arch-fallback.h:1158 /home/reinhardt/dev-apps/kernel/linux/./include/linux/atomic/atomic-arch-fallback.h:1183 /home/reinhardt/dev-apps/kernel/linux/./include/linux/atomic/atomic-instrumented.h:608 /home/reinhardt/dev-apps/kernel/linux/./include/linux/page_ref.h:238 /home/reinhardt/dev-apps/kernel/linux/./include/linux/page_ref.h:247 /home/reinhardt/dev-apps/kernel/linux/./include/linux/page_ref.h:280 /home/reinhardt/dev-apps/kernel/linux/./include/linux/page_ref.h:313 /home/reinhardt/dev-apps/kernel/linux/mm/filemap.c:1899 /home/reinhardt/dev-apps/kernel/linux/mm/filemap.c:1951) [ 1975.257152] Code: 10 e8 56 fd 67 00 48 89 c3 48 3d 02 04 00 00 74 e2 48 3d 06 04 00 00 74 da 48 85 c0 0f 84 3e 02 00 00 a8 01 0f 85 40 02 00 00 <8b> 40 34 85 c0 74 c2 8d 50 01 f0 0f b1 53 34 75 f2 48 8b 54 24 28 All code ======== 0: 10 e8 adc %ch,%al 2: 56 push %rsi 3: fd std 4: 67 00 48 89 add %cl,-0x77(%eax) 8: c3 ret 9: 48 3d 02 04 00 00 cmp $0x402,%rax f: 74 e2 je 0xfffffffffffffff3 11: 48 3d 06 04 00 00 cmp $0x406,%rax 17: 74 da je 0xfffffffffffffff3 19: 48 85 c0 test %rax,%rax 1c: 0f 84 3e 02 00 00 je 0x260 22: a8 01 test $0x1,%al 24: 0f 85 40 02 00 00 jne 0x26a 2a:* 8b 40 34 mov 0x34(%rax),%eax <-- trapping instruction 2d: 85 c0 test %eax,%eax 2f: 74 c2 je 0xfffffffffffffff3 31: 8d 50 01 lea 0x1(%rax),%edx 34: f0 0f b1 53 34 lock cmpxchg %edx,0x34(%rbx) 39: 75 f2 jne 0x2d 3b: 48 8b 54 24 28 mov 0x28(%rsp),%rdx Code starting with the faulting instruction =========================================== 0: 8b 40 34 mov 0x34(%rax),%eax 3: 85 c0 test %eax,%eax 5: 74 c2 je 0xffffffffffffffc9 7: 8d 50 01 lea 0x1(%rax),%edx a: f0 0f b1 53 34 lock cmpxchg %edx,0x34(%rbx) f: 75 f2 jne 0x3 11: 48 8b 54 24 28 mov 0x28(%rsp),%rdx [ 1975.257154] RSP: 0000:ffffc2d744c37cb0 EFLAGS: 00010246 [ 1975.257155] RAX: 0000000000000002 RBX: 0000000000000002 RCX: 0000000000000000 [ 1975.257156] RDX: 0000000000000000 RSI: ffffffffbb117459 RDI: 00000000ffffffff [ 1975.257157] RBP: 0000000000000000 R08: 00000000ffffdfff R09: 00000000ffffdfff [ 1975.257158] R10: ffffffffbb472dc0 R11: ffffffffbb472dc0 R12: 0000000000000000 [ 1975.257159] R13: ffff9fc521173e78 R14: 00000000000decc7 R15: fff000003fffffff [ 1975.257160] FS: 00007fb2137fe6c0(0000) GS:ffff9fcb7eb40000(0000) knlGS:0000000000000000 [ 1975.257161] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1975.257162] CR2: 0000000000000036 CR3: 0000000164114000 CR4: 0000000000750ee0 [ 1975.257163] PKRU: 55555554 [ 1975.257163] Call Trace: [ 1975.257164] <TASK> [ 1975.257166] ? page_add_file_rmap (/home/reinhardt/dev-apps/kernel/linux/./include/linux/page-flags.h:195 /home/reinhardt/dev-apps/kernel/linux/mm/internal.h:440 /home/reinhardt/dev-apps/kernel/linux/mm/rmap.c:1270) [ 1975.257169] filemap_fault (/home/reinhardt/dev-apps/kernel/linux/./include/linux/pagemap.h:531 /home/reinhardt/dev-apps/kernel/linux/mm/filemap.c:3107) [ 1975.257172] __do_fault (/home/reinhardt/dev-apps/kernel/linux/mm/memory.c:3852) [ 1975.257174] __handle_mm_fault (/home/reinhardt/dev-apps/kernel/linux/mm/memory.c:4169 /home/reinhardt/dev-apps/kernel/linux/mm/memory.c:4297 /home/reinhardt/dev-apps/kernel/linux/mm/memory.c:4555 /home/reinhardt/dev-apps/kernel/linux/mm/memory.c:4690) [ 1975.257176] handle_mm_fault (/home/reinhardt/dev-apps/kernel/linux/mm/memory.c:4788) [ 1975.257178] do_user_addr_fault (/home/reinhardt/dev-apps/kernel/linux/./include/linux/sched/signal.h:404 /home/reinhardt/dev-apps/kernel/linux/arch/x86/mm/fault.c:1399) [ 1975.257181] exc_page_fault (/home/reinhardt/dev-apps/kernel/linux/./arch/x86/include/asm/irqflags.h:40 /home/reinhardt/dev-apps/kernel/linux/./arch/x86/include/asm/irqflags.h:75 /home/reinhardt/dev-apps/kernel/linux/arch/x86/mm/fault.c:1492 /home/reinhardt/dev-apps/kernel/linux/arch/x86/mm/fault.c:1540) [ 1975.257184] ? asm_exc_page_fault (/home/reinhardt/dev-apps/kernel/linux/./arch/x86/include/asm/idtentry.h:568) [ 1975.257186] asm_exc_page_fault (/home/reinhardt/dev-apps/kernel/linux/./arch/x86/include/asm/idtentry.h:568) [ 1975.257188] RIP: 0033:0x7fb265b88409 [ 1975.257189] Code: 66 66 2e 0f 1f 84 00 00 00 00 00 66 66 2e 0f 1f 84 00 00 00 00 00 66 66 2e 0f 1f 84 00 00 00 00 00 48 89 f8 48 83 fa 20 72 27 <c5> fe 6f 06 48 83 fa 40 0f 87 a9 00 00 00 c5 fe 6f 4c 16 e0 c5 fe All code ======== 0: 66 66 2e 0f 1f 84 00 data16 cs nopw 0x0(%rax,%rax,1) 7: 00 00 00 00 b: 66 66 2e 0f 1f 84 00 data16 cs nopw 0x0(%rax,%rax,1) 12: 00 00 00 00 16: 66 66 2e 0f 1f 84 00 data16 cs nopw 0x0(%rax,%rax,1) 1d: 00 00 00 00 21: 48 89 f8 mov %rdi,%rax 24: 48 83 fa 20 cmp $0x20,%rdx 28: 72 27 jb 0x51 2a:* c5 fe 6f 06 vmovdqu (%rsi),%ymm0 <-- trapping instruction 2e: 48 83 fa 40 cmp $0x40,%rdx 32: 0f 87 a9 00 00 00 ja 0xe1 38: c5 fe 6f 4c 16 e0 vmovdqu -0x20(%rsi,%rdx,1),%ymm1 3e: c5 .byte 0xc5 3f: fe .byte 0xfe Code starting with the faulting instruction =========================================== 0: c5 fe 6f 06 vmovdqu (%rsi),%ymm0 4: 48 83 fa 40 cmp $0x40,%rdx 8: 0f 87 a9 00 00 00 ja 0xb7 e: c5 fe 6f 4c 16 e0 vmovdqu -0x20(%rsi,%rdx,1),%ymm1 14: c5 .byte 0xc5 15: fe .byte 0xfe [ 1975.257190] RSP: 002b:00007fb2137fd908 EFLAGS: 00010202 [ 1975.257191] RAX: 00007fb204012a80 RBX: 0000000000000000 RCX: 00007fb2137fda90 [ 1975.257192] RDX: 0000000000004000 RSI: 00007f9fddbb51c3 RDI: 00007fb204012a80 [ 1975.257193] RBP: 00007fb2137fd928 R08: 00000000638ea1ab R09: 0000000000000000 [ 1975.257193] R10: 0000000000000008 R11: 0000000000000246 R12: 00007fb204000bb0 [ 1975.257194] R13: 00007fb21809a5a0 R14: 00000000decc71c3 R15: 0000000000004000 [ 1975.257196] </TASK> [ 1975.257196] Modules linked in: overlay xt_addrtype amdgpu drm_ttm_helper ttm gpu_sched drm_kms_helper iwlmvm backlight syscopyarea mac80211 sysfillrect sysimgblt libarc4 fb_sys_fops iwlwifi cfg80211 i2c_piix4 k10temp fuse configfs efivarfs [ 1975.257207] CR2: 0000000000000036 [ 1975.257208] ---[ end trace 0000000000000000 ]--- [ 1975.257209] RIP: 0010:__filemap_get_folio (/home/reinhardt/dev-apps/kernel/linux/./arch/x86/include/asm/atomic.h:29 /home/reinhardt/dev-apps/kernel/linux/./include/linux/atomic/atomic-arch-fallback.h:1158 /home/reinhardt/dev-apps/kernel/linux/./include/linux/atomic/atomic-arch-fallback.h:1183 /home/reinhardt/dev-apps/kernel/linux/./include/linux/atomic/atomic-instrumented.h:608 /home/reinhardt/dev-apps/kernel/linux/./include/linux/page_ref.h:238 /home/reinhardt/dev-apps/kernel/linux/./include/linux/page_ref.h:247 /home/reinhardt/dev-apps/kernel/linux/./include/linux/page_ref.h:280 /home/reinhardt/dev-apps/kernel/linux/./include/linux/page_ref.h:313 /home/reinhardt/dev-apps/kernel/linux/mm/filemap.c:1899 /home/reinhardt/dev-apps/kernel/linux/mm/filemap.c:1951) [ 1975.257211] Code: 10 e8 56 fd 67 00 48 89 c3 48 3d 02 04 00 00 74 e2 48 3d 06 04 00 00 74 da 48 85 c0 0f 84 3e 02 00 00 a8 01 0f 85 40 02 00 00 <8b> 40 34 85 c0 74 c2 8d 50 01 f0 0f b1 53 34 75 f2 48 8b 54 24 28 All code ======== 0: 10 e8 adc %ch,%al 2: 56 push %rsi 3: fd std 4: 67 00 48 89 add %cl,-0x77(%eax) 8: c3 ret 9: 48 3d 02 04 00 00 cmp $0x402,%rax f: 74 e2 je 0xfffffffffffffff3 11: 48 3d 06 04 00 00 cmp $0x406,%rax 17: 74 da je 0xfffffffffffffff3 19: 48 85 c0 test %rax,%rax 1c: 0f 84 3e 02 00 00 je 0x260 22: a8 01 test $0x1,%al 24: 0f 85 40 02 00 00 jne 0x26a 2a:* 8b 40 34 mov 0x34(%rax),%eax <-- trapping instruction 2d: 85 c0 test %eax,%eax 2f: 74 c2 je 0xfffffffffffffff3 31: 8d 50 01 lea 0x1(%rax),%edx 34: f0 0f b1 53 34 lock cmpxchg %edx,0x34(%rbx) 39: 75 f2 jne 0x2d 3b: 48 8b 54 24 28 mov 0x28(%rsp),%rdx Code starting with the faulting instruction =========================================== 0: 8b 40 34 mov 0x34(%rax),%eax 3: 85 c0 test %eax,%eax 5: 74 c2 je 0xffffffffffffffc9 7: 8d 50 01 lea 0x1(%rax),%edx a: f0 0f b1 53 34 lock cmpxchg %edx,0x34(%rbx) f: 75 f2 jne 0x3 11: 48 8b 54 24 28 mov 0x28(%rsp),%rdx [ 1975.257212] RSP: 0000:ffffc2d744c37cb0 EFLAGS: 00010246 [ 1975.257213] RAX: 0000000000000002 RBX: 0000000000000002 RCX: 0000000000000000 [ 1975.257214] RDX: 0000000000000000 RSI: ffffffffbb117459 RDI: 00000000ffffffff [ 1975.257215] RBP: 0000000000000000 R08: 00000000ffffdfff R09: 00000000ffffdfff [ 1975.257215] R10: ffffffffbb472dc0 R11: ffffffffbb472dc0 R12: 0000000000000000 [ 1975.257216] R13: ffff9fc521173e78 R14: 00000000000decc7 R15: fff000003fffffff [ 1975.257217] FS: 00007fb2137fe6c0(0000) GS:ffff9fcb7eb40000(0000) knlGS:0000000000000000 [ 1975.257218] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1975.257219] CR2: 0000000000000036 CR3: 0000000164114000 CR4: 0000000000750ee0 [ 1975.257220] PKRU: 55555554 (full dmesg and my local changeset in attachments for your reference) -- Mikhail Pletnev [off-list ref]
Attachments
- full_dmesg_new [text/plain] 98701 bytes · preview
- changeset [text/plain] 2918 bytes · preview