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Message-ID: <66ef4882.050a0220.3195df.006e.GAE@google.com> Date: Sat, 21 Sep 2024 15:28:18 -0700 From: syzbot <syzbot+4bf62a7b1d0f4fdb7ae2@...kaller.appspotmail.com> To: linux-kernel@...r.kernel.org, linux-sound@...r.kernel.org, perex@...ex.cz, syzkaller-bugs@...glegroups.com, tiwai@...e.com Subject: [syzbot] [sound?] kernel BUG in snd_pcm_mmap_data_fault Hello, syzbot found the following issue on: HEAD commit: a430d95c5efa Merge tag 'lsm-pr-20240911' of git://git.kern.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13691207980000 kernel config: https://syzkaller.appspot.com/x/.config?x=a69c66e868285a9d dashboard link: https://syzkaller.appspot.com/bug?extid=4bf62a7b1d0f4fdb7ae2 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-a430d95c.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/7c522024ada4/vmlinux-a430d95c.xz kernel image: https://storage.googleapis.com/syzbot-assets/b20faf992428/bzImage-a430d95c.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+4bf62a7b1d0f4fdb7ae2@...kaller.appspotmail.com ------------[ cut here ]------------ kernel BUG at arch/x86/mm/physaddr.c:28! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 2 UID: 0 PID: 6703 Comm: syz.3.325 Not tainted 6.11.0-syzkaller-02574-ga430d95c5efa #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:__phys_addr+0xd8/0x150 arch/x86/mm/physaddr.c:28 Code: 48 d3 e8 48 89 c5 48 89 c6 e8 04 ee 4c 00 48 85 ed 75 11 e8 8a eb 4c 00 48 89 d8 5b 5d 41 5c c3 cc cc cc cc e8 79 eb 4c 00 90 <0f> 0b e8 71 eb 4c 00 48 c7 c0 10 60 ba 8d 48 ba 00 00 00 00 00 fc RSP: 0018:ffffc9000c01f550 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000778000000000 RCX: ffffffff813e38c0 RDX: ffff888024ecc880 RSI: ffffffff813e3947 RDI: 0000000000000006 RBP: 0000000080000000 R08: 0000000000000006 R09: 0000000080000000 R10: 0000778000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88801e93d000 R15: ffffc9000c01f680 FS: 0000000000000000(0000) GS:ffff88802b800000(0063) knlGS:00000000f5716b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000020bff000 CR3: 0000000025f2a000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> snd_pcm_mmap_data_fault+0x3f2/0x4c0 sound/core/pcm_native.c:3793 __do_fault+0x10a/0x490 mm/memory.c:4672 do_read_fault mm/memory.c:5078 [inline] do_fault mm/memory.c:5208 [inline] do_pte_missing mm/memory.c:3964 [inline] handle_pte_fault mm/memory.c:5538 [inline] __handle_mm_fault+0x3b47/0x5470 mm/memory.c:5681 handle_mm_fault+0x498/0xa60 mm/memory.c:5849 faultin_page mm/gup.c:1207 [inline] __get_user_pages+0x475/0x15c0 mm/gup.c:1506 __get_user_pages_locked mm/gup.c:1773 [inline] __gup_longterm_locked+0x22e/0x1b30 mm/gup.c:2502 pin_user_pages_remote+0xee/0x150 mm/gup.c:3541 process_vm_rw_single_vec mm/process_vm_access.c:106 [inline] process_vm_rw_core.constprop.0+0x439/0x9f0 mm/process_vm_access.c:216 process_vm_rw+0x301/0x360 mm/process_vm_access.c:284 __do_sys_process_vm_readv mm/process_vm_access.c:296 [inline] __se_sys_process_vm_readv mm/process_vm_access.c:292 [inline] __ia32_sys_process_vm_readv+0xdf/0x1b0 mm/process_vm_access.c:292 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7f92579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f571656c EFLAGS: 00000296 ORIG_RAX: 000000000000015b RAX: ffffffffffffffda RBX: 00000000000000e8 RCX: 0000000020008400 RDX: 0000000000000002 RSI: 0000000020000400 RDI: 00000000000002db RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__phys_addr+0xd8/0x150 arch/x86/mm/physaddr.c:28 Code: 48 d3 e8 48 89 c5 48 89 c6 e8 04 ee 4c 00 48 85 ed 75 11 e8 8a eb 4c 00 48 89 d8 5b 5d 41 5c c3 cc cc cc cc e8 79 eb 4c 00 90 <0f> 0b e8 71 eb 4c 00 48 c7 c0 10 60 ba 8d 48 ba 00 00 00 00 00 fc RSP: 0018:ffffc9000c01f550 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000778000000000 RCX: ffffffff813e38c0 RDX: ffff888024ecc880 RSI: ffffffff813e3947 RDI: 0000000000000006 RBP: 0000000080000000 R08: 0000000000000006 R09: 0000000080000000 R10: 0000778000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88801e93d000 R15: ffffc9000c01f680 FS: 0000000000000000(0000) GS:ffff88802b800000(0063) knlGS:00000000f5716b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00005583dfdec000 CR3: 0000000025f2a000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 10 06 adc %al,(%rsi) 2: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 6: 10 07 adc %al,(%rdi) 8: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi c: 10 08 adc %cl,(%rax) e: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1e: 00 51 52 add %dl,0x52(%rcx) 21: 55 push %rbp 22: 89 e5 mov %esp,%ebp 24: 0f 34 sysenter 26: cd 80 int $0x80 * 28: 5d pop %rbp <-- trapping instruction 29: 5a pop %rdx 2a: 59 pop %rcx 2b: c3 ret 2c: 90 nop 2d: 90 nop 2e: 90 nop 2f: 90 nop 30: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 37: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi --- 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@...glegroups.com. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title 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
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