Message-ID: <676166ea.050a0220.37aaf.0174.GAE@google.com>
Date: Tue, 17 Dec 2024 03:56:26 -0800
From: syzbot <syzbot+b565bf4a6ba3a0fc072c@...kaller.appspotmail.com>
To: linux-kernel@...r.kernel.org, linux-trace-kernel@...r.kernel.org, 
	mathieu.desnoyers@...icios.com, mhiramat@...nel.org, rostedt@...dmis.org, 
	syzkaller-bugs@...glegroups.com
Subject: [syzbot] [trace?] kernel BUG in ring_buffer_map

Hello,

syzbot found the following issue on:

HEAD commit:    78d4f34e2115 Linux 6.13-rc3
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=10840b44580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=9cac7e24ceea492
dashboard link: https://syzkaller.appspot.com/bug?extid=b565bf4a6ba3a0fc072c
compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=120334f8580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=11a19730580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/2cc4d7ad894c/disk-78d4f34e.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/d726c69c5750/vmlinux-78d4f34e.xz
kernel image: https://storage.googleapis.com/syzbot-assets/514b5ee15ec5/bzImage-78d4f34e.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+b565bf4a6ba3a0fc072c@...kaller.appspotmail.com

------------[ cut here ]------------
kernel BUG at arch/x86/mm/physaddr.c:28!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 1 UID: 0 PID: 5838 Comm: syz-executor194 Not tainted 6.13.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
RIP: 0010:__phys_addr+0xd8/0x150 arch/x86/mm/physaddr.c:28
Code: 48 d3 e8 48 89 c5 48 89 c6 e8 c4 c7 4e 00 48 85 ed 75 11 e8 4a c5 4e 00 48 89 d8 5b 5d 41 5c c3 cc cc cc cc e8 39 c5 4e 00 90 <0f> 0b e8 31 c5 4e 00 48 c7 c0 10 80 ba 8d 48 ba 00 00 00 00 00 fc
RSP: 0018:ffffc90003d77770 EFLAGS: 00010293
RAX: 0000000000000000 RBX: f8f97078f8f8f8f8 RCX: ffffffff814a8930
RDX: ffff888079ed9e00 RSI: ffffffff814a89b7 RDI: 0000000000000006
RBP: f8f8f8f978f8f8f8 R08: 0000000000000006 R09: f8f8f8f978f8f8f8
R10: f8f97078f8f8f8f8 R11: ffffffff81fb8dda R12: 0000000000000000
R13: ffff888076006308 R14: 0000000000000003 R15: 0000000000000001
FS:  00007f203d1b16c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055f26faf8bf8 CR3: 00000000324ec000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __rb_map_vma+0x5b3/0xae0 kernel/trace/ring_buffer.c:7058
 ring_buffer_map+0x56e/0x9b0 kernel/trace/ring_buffer.c:7138
 tracing_buffers_mmap+0xa6/0x120 kernel/trace/trace.c:8482
 call_mmap include/linux/fs.h:2183 [inline]
 mmap_file mm/internal.h:124 [inline]
 __mmap_new_file_vma mm/vma.c:2291 [inline]
 __mmap_new_vma mm/vma.c:2355 [inline]
 __mmap_region+0x1786/0x2670 mm/vma.c:2456
 mmap_region+0x127/0x320 mm/mmap.c:1348
 do_mmap+0xc00/0xfc0 mm/mmap.c:496
 vm_mmap_pgoff+0x1ba/0x360 mm/util.c:580
 ksys_mmap_pgoff+0x32c/0x5c0 mm/mmap.c:542
 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:89 [inline]
 __se_sys_mmap arch/x86/kernel/sys_x86_64.c:82 [inline]
 __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:82
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f203d1fecb9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 1d 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f203d1b1228 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f203d2823c8 RCX: 00007f203d1fecb9
RDX: 0000000000000001 RSI: 000000000000401f RDI: 0000000020ffc000
RBP: 00007f203d2823c0 R08: 0000000000000003 R09: 0000000001000000
R10: 000000000008e051 R11: 0000000000000246 R12: 00007f203d2823cc
R13: 0000000000000000 R14: 00007ffc95e2dbc0 R15: 00007ffc95e2dca8
 </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 c4 c7 4e 00 48 85 ed 75 11 e8 4a c5 4e 00 48 89 d8 5b 5d 41 5c c3 cc cc cc cc e8 39 c5 4e 00 90 <0f> 0b e8 31 c5 4e 00 48 c7 c0 10 80 ba 8d 48 ba 00 00 00 00 00 fc
RSP: 0018:ffffc90003d77770 EFLAGS: 00010293
RAX: 0000000000000000 RBX: f8f97078f8f8f8f8 RCX: ffffffff814a8930
RDX: ffff888079ed9e00 RSI: ffffffff814a89b7 RDI: 0000000000000006
RBP: f8f8f8f978f8f8f8 R08: 0000000000000006 R09: f8f8f8f978f8f8f8
R10: f8f97078f8f8f8f8 R11: ffffffff81fb8dda R12: 0000000000000000
R13: ffff888076006308 R14: 0000000000000003 R15: 0000000000000001
FS:  00007f203d1b16c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f203d24e008 CR3: 00000000324ec000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400


---
This report is generated by a bot. It may contain errors.
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