[AMD Official Use Only - AMD Internal Distribution Only] > -----Original Message----- > From: Limonciello, Mario <Mario.Limonciello@xxxxxxx> > Sent: Thursday, June 6, 2024 10:56 AM > To: Deucher, Alexander <Alexander.Deucher@xxxxxxx> > Cc: syzbot <syzbot+c019f68a83ef9b456444@xxxxxxxxxxxxxxxxxxxxxxxxx>; > Huang, Tim <Tim.Huang@xxxxxxx>; Pan, Xinhui <Xinhui.Pan@xxxxxxx>; > airlied@xxxxxxxxx; akpm@xxxxxxxxxxxxxxxxxxxx; Deucher, Alexander > <Alexander.Deucher@xxxxxxx>; amd-gfx@xxxxxxxxxxxxxxxxxxxxx; Koenig, > Christian <Christian.Koenig@xxxxxxx>; daniel@xxxxxxxx; dri- > devel@xxxxxxxxxxxxxxxxxxxxx; evan.quan@xxxxxxx; Lazar, Lijo > <Lijo.Lazar@xxxxxxx>; linux-kernel@xxxxxxxxxxxxxxx; linux-mm@xxxxxxxxx; > muchun.song@xxxxxxxxx; syzkaller-bugs@xxxxxxxxxxxxxxxx; Zhang, Yifan > <Yifan1.Zhang@xxxxxxx> > Subject: Re: [syzbot] [mm?] general protection fault in > dequeue_hugetlb_folio_nodemask > > On 6/6/2024 09:39, syzbot wrote: > > Hello, > > > > syzbot found the following issue on: > > > > HEAD commit: 0e1980c40b6e Add linux-next specific files for 20240531 > > git tree: linux-next > > console+strace: > > console+https://syzkaller.appspot.com/x/log.txt?x=166086f2980000 > > kernel config: > > https://syzkaller.appspot.com/x/.config?x=d9c3ca4e54577b88 > > dashboard link: > https://syzkaller.appspot.com/bug?extid=c019f68a83ef9b456444 > > compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) > 2.40 > > syz repro: > https://syzkaller.appspot.com/x/repro.syz?x=12f4094a980000 > > C reproducer: > https://syzkaller.appspot.com/x/repro.c?x=15e1e432980000 > > > > Downloadable assets: > > disk image: > > https://storage.googleapis.com/syzbot-assets/44fb1d8b5978/disk- > 0e1980c > > 4.raw.xz > > vmlinux: > > https://storage.googleapis.com/syzbot-assets/a66ce5caf0b2/vmlinux-0e19 > > 80c4.xz kernel image: > > https://storage.googleapis.com/syzbot-assets/8992fc8fe046/bzImage- > 0e19 > > 80c4.xz > > > > The issue was bisected to: > > > > commit cd94d1b182d2986378550c9087571991bfee01d4 > > Author: Mario Limonciello <mario.limonciello@xxxxxxx> > > Date: Thu May 2 18:32:17 2024 +0000 > > > > dm/amd/pm: Fix problems with reboot/shutdown for some SMU > > 13.0.4/13.0.11 users > > > > bisection log: > > https://syzkaller.appspot.com/x/bisect.txt?x=176121c2980000 > > console output: > > https://syzkaller.appspot.com/x/log.txt?x=10e121c2980000 > > > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > > Reported-by: syzbot+c019f68a83ef9b456444@xxxxxxxxxxxxxxxxxxxxxxxxx > > Fixes: cd94d1b182d2 ("dm/amd/pm: Fix problems with reboot/shutdown > for > > some SMU 13.0.4/13.0.11 users") > > > > Oops: general protection fault, probably for non-canonical address > > 0xdffffc0000000489: 0000 [#1] PREEMPT SMP KASAN PTI > > KASAN: probably user-memory-access in range > > [0x0000000000002448-0x000000000000244f] > > CPU: 1 PID: 5089 Comm: syz-executor257 Not tainted > > 6.10.0-rc1-next-20240531-syzkaller #0 Hardware name: Google Google > > Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 > > RIP: 0010:zonelist_zone_idx include/linux/mmzone.h:1613 [inline] > > RIP: 0010:next_zones_zonelist include/linux/mmzone.h:1644 [inline] > > RIP: 0010:first_zones_zonelist include/linux/mmzone.h:1670 [inline] > > RIP: 0010:dequeue_hugetlb_folio_nodemask+0x193/0xe40 > mm/hugetlb.c:1362 > > Code: 13 9b a0 ff c7 44 24 14 00 00 00 00 83 7c 24 40 00 0f 85 97 0c > > 00 00 48 83 7c 24 20 00 0f 85 45 09 00 00 48 89 d8 48 c1 e8 03 <42> 0f > > b6 04 28 84 c0 0f 85 58 09 00 00 44 8b 33 44 89 f7 8b 5c 24 > > RSP: 0018:ffffc900035ef720 EFLAGS: 00010002 > > RAX: 0000000000000489 RBX: 0000000000002448 RCX: > ffff888026ef0000 > > RDX: 0000000000000000 RSI: 0000000000000000 RDI: > 0000000000000000 > > RBP: ffffc900035ef858 R08: ffffffff81f5e070 R09: fffff520006bdee8 > > R10: dffffc0000000000 R11: fffff520006bdee8 R12: 00000000ffffffff > > R13: dffffc0000000000 R14: 0000000000000000 R15: > 0000000000000000 > > FS: 0000555564010380(0000) GS:ffff8880b9500000(0000) > > knlGS:0000000000000000 > > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > > CR2: 00000000005fdeb8 CR3: 000000007bd96000 CR4: > 00000000003506f0 > > DR0: 0000000000000000 DR1: 0000000000000000 DR2: > 0000000000000000 > > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: > 0000000000000400 Call > > Trace: > > <TASK> > > alloc_hugetlb_folio_nodemask+0xae/0x3f0 mm/hugetlb.c:2603 > > memfd_alloc_folio+0x15e/0x390 mm/memfd.c:75 > > memfd_pin_folios+0x1066/0x1720 mm/gup.c:3864 > > udmabuf_create+0x658/0x11c0 drivers/dma-buf/udmabuf.c:353 > > udmabuf_ioctl_create drivers/dma-buf/udmabuf.c:420 [inline] > > udmabuf_ioctl+0x304/0x4f0 drivers/dma-buf/udmabuf.c:451 > > vfs_ioctl fs/ioctl.c:51 [inline] > > __do_sys_ioctl fs/ioctl.c:907 [inline] > > __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893 > > do_syscall_x64 arch/x86/entry/common.c:52 [inline] > > do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 > > entry_SYSCALL_64_after_hwframe+0x77/0x7f > > RIP: 0033:0x7f5151a7a369 > > Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 > > 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d > > 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 > > RSP: 002b:00007ffd962ee9e8 EFLAGS: 00000246 ORIG_RAX: > 0000000000000010 > > RAX: ffffffffffffffda RBX: 00007ffd962eebb8 RCX: 00007f5151a7a369 > > RDX: 00000000200002c0 RSI: 0000000040187542 RDI: > 0000000000000003 > > RBP: 00007f5151aed610 R08: 00007ffd962eebb8 R09: 00007ffd962eebb8 > > R10: 00007ffd962eebb8 R11: 0000000000000246 R12: > 0000000000000001 > > R13: 00007ffd962eeba8 R14: 0000000000000001 R15: > 0000000000000001 > > </TASK> > > Modules linked in: > > ---[ end trace 0000000000000000 ]--- > > RIP: 0010:zonelist_zone_idx include/linux/mmzone.h:1613 [inline] > > RIP: 0010:next_zones_zonelist include/linux/mmzone.h:1644 [inline] > > RIP: 0010:first_zones_zonelist include/linux/mmzone.h:1670 [inline] > > RIP: 0010:dequeue_hugetlb_folio_nodemask+0x193/0xe40 > mm/hugetlb.c:1362 > > Code: 13 9b a0 ff c7 44 24 14 00 00 00 00 83 7c 24 40 00 0f 85 97 0c > > 00 00 48 83 7c 24 20 00 0f 85 45 09 00 00 48 89 d8 48 c1 e8 03 <42> 0f > > b6 04 28 84 c0 0f 85 58 09 00 00 44 8b 33 44 89 f7 8b 5c 24 > > RSP: 0018:ffffc900035ef720 EFLAGS: 00010002 > > RAX: 0000000000000489 RBX: 0000000000002448 RCX: > ffff888026ef0000 > > RDX: 0000000000000000 RSI: 0000000000000000 RDI: > 0000000000000000 > > RBP: ffffc900035ef858 R08: ffffffff81f5e070 R09: fffff520006bdee8 > > R10: dffffc0000000000 R11: fffff520006bdee8 R12: 00000000ffffffff > > R13: dffffc0000000000 R14: 0000000000000000 R15: > 0000000000000000 > > FS: 0000555564010380(0000) GS:ffff8880b9500000(0000) > > knlGS:0000000000000000 > > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > > CR2: 00000000005fdeb8 CR3: 000000007bd96000 CR4: > 00000000003506f0 > > DR0: 0000000000000000 DR1: 0000000000000000 DR2: > 0000000000000000 > > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: > 0000000000000400 > > ---------------- > > Code disassembly (best guess): > > 0: 13 9b a0 ff c7 44 adc 0x44c7ffa0(%rbx),%ebx > > 6: 24 14 and $0x14,%al > > 8: 00 00 add %al,(%rax) > > a: 00 00 add %al,(%rax) > > c: 83 7c 24 40 00 cmpl $0x0,0x40(%rsp) > > 11: 0f 85 97 0c 00 00 jne 0xcae > > 17: 48 83 7c 24 20 00 cmpq $0x0,0x20(%rsp) > > 1d: 0f 85 45 09 00 00 jne 0x968 > > 23: 48 89 d8 mov %rbx,%rax > > 26: 48 c1 e8 03 shr $0x3,%rax > > * 2a: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax <-- trapping > instruction > > 2f: 84 c0 test %al,%al > > 31: 0f 85 58 09 00 00 jne 0x98f > > 37: 44 8b 33 mov (%rbx),%r14d > > 3a: 44 89 f7 mov %r14d,%edi > > 3d: 8b .byte 0x8b > > 3e: 5c pop %rsp > > 3f: 24 .byte 0x24 > > > > > > --- > > This report is generated by a bot. It may contain errors. > > See https://goo.gl/tpsmEJ for more information about syzbot. > > syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. > > > > syzbot will keep track of this issue. See: > > https://goo.gl/tpsmEJ#status for how to communicate with syzbot. > > For information about bisection process see: > > https://goo.gl/tpsmEJ#bisection > > > > If the report is already addressed, let syzbot know by replying with: > > #syz fix: exact-commit-title > > > > If you want syzbot to run the reproducer, reply with: > > #syz test: git://repo/address.git branch-or-commit-hash If you attach > > or paste a git patch, syzbot will apply it before testing. > > > > If you want to overwrite report's subsystems, reply with: > > #syz set subsystems: new-subsystem > > (See the list of subsystem names on the web dashboard) > > > > If the report is a duplicate of another one, reply with: > > #syz dup: exact-subject-of-another-report > > > > If you want to undo deduplication, reply with: > > #syz undup > > I don't believe the bot did this right. Running in a VM outside of shutdown > won't exercise this codepath. > > #syz invalid > > But FWIW there WAS a different problem with that commit which will be fixed > with: > > https://gitlab.freedesktop.org/agd5f/linux/- > /commit/2541609cd583dd13bf809934806df141e123d35f > > Alex, I don't see this in the 6.10 fixes branch, could you pull it in an upcoming > one? > Sent out as part of today's PR. Alex
