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Tue, 31 Dec 2024 20:50:23 -0800 (PST) Date: Tue, 31 Dec 2024 20:50:23 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6774c98f.050a0220.25abdd.0991.GAE@google.com> Subject: [syzbot] [mm?] WARNING in vma_merge_existing_range From: syzbot To: Liam.Howlett@oracle.com, akpm@linux-foundation.org, jannh@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, lorenzo.stoakes@oracle.com, syzkaller-bugs@googlegroups.com, vbabka@suse.cz Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: 567B9140006 X-Rspam-User: X-Stat-Signature: s8e48gwoftu6cb4cme4qkc7qbidus1yi X-HE-Tag: 1735706987-359187 X-HE-Meta: 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 6f2nuECV 3I4FO/rj8LietbxQyr2tmZznRnQyCGcQaSzag7mD151MsaiqPSrdrfMqCjThEArW4io2AGIIIgsm6Ipgi8En7OvDjajAWsfdirNVG/x73LPOGm7u7yK5+Et/1M0VutWgzDICNOk7b216i5z3RdCzpGdTJb0HdtKhUbAEYFdBn0RUkIPdrnu0veVeSq71bVW9S8x9hggQgGDjYAqlrI0PpyfXWsQiPJ6Ta7H7IRulcnYoulvuUVtNTvLo56HytF+sM1e6JQGTPTPWrY9bPoilIcqta9rO036JXEFYDdZUlPuz/NQwFcoe3zsCEJX7qk7sz+KkLXDUZS2JicYewDZiFD70y8mS7pGyM87cgHPIcZkIJBgvx4HJ/gSehTWBzHjZzLD5Wf40oZa5swODOcI8FZiL+56+QPyhvZs0LIAhD3NAg2dZWTTo0kG1Iinn7PQY6UFUV0Tn0RAQDyWu2AshZvmdEAFaANhyGIT9c8rOsul3oyCC4QXJ5hb0NfvXOJF6xz4jXSu1WIV4amczFAguOl+/bapEBUWQ8mb78mrI2JrE4y9LCisEX++Fz1smZVMO6tCn4F6Dc5Qb/4Q+Cwu4m93HHV+3Wdt/UHoJgSFJzNcNwgkN6fSnIU4Qmwl++XPx3yyneWsiaahZIgjCLWX1kKbNjIee+hrrZw3qq3Uup9geIhADbuMBo6GZr96OJkvOXrDO15ntmi4eD3Mal8f7pB5yDKGF8DoQB7DS38jYXm+NcjRVwwaFLmqlxv7CJNxLqGm5ZicYG8AsBrqoP6H4dCgtsdEpr6kVCXTDPwU9h7ruTArf3sPtU5oy7a0xo/jdTCQf+B04AtbIluYzzwqwcELIHtBqmEn1Uq2IIB8dewqU7b5GVY2dTA7oKqen+M/ntZwE3JdhFANEYGWRKS2oDhRfejfgI+fAF2QeXXD2gDqgIDFmbIp3yD6fva9qWMMo7Sss9pU+vzar6mBnueX0xoNdi9XgE 05FjXJ0E Z/Na2bYQNXsCMKesWimqwIXTbxYKYfw6PM1fs7Corc3jcIm1ZF56OSZOR3X5xbJuygmrhKoh5uNPgZstoZ9qadFrjs5/ozLZ+ZvJaVxwHBoXnX/rmGkMe9QY4xSDIb0IBcfZfM1SkFSMTcxfke/tHzSWgBUjf7Dy6VOWkW/5d67RoUaFRoX82DUbp7fHS5ULtTV3fq37k4r5ItDORCoZX9O/4oKG05TEJbP8ENlWDIaVtTf+R97kQHg0A5L6yLXFT74oPREyofq8h7wXUYZNexgaUiWDgOnuIfZeIQgwwKN/9s/r9T53T0hEQp7Zvi6RDdVX90toVm5ge/SzWE3t3frPDqqGpjDgP0+Ovdmz1XqPECjEMvUoeRSwwUdYX6gWkM02UUZNvvYiRK/tJWd+VSxm6ce29N4n X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hello, syzbot found the following issue on: HEAD commit: 8379578b11d5 Merge tag 'for-v6.13-rc' of git://git.kernel... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=16113018580000 kernel config: https://syzkaller.appspot.com/x/.config?x=d269ef41b9262400 dashboard link: https://syzkaller.appspot.com/bug?extid=46423ed8fa1f1148c6e4 compiler: Debian clang version 15.0.6, 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: https://storage.googleapis.com/syzbot-assets/86d2e3352aff/disk-8379578b.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/345570cd3573/vmlinux-8379578b.xz kernel image: https://storage.googleapis.com/syzbot-assets/01da37a51505/bzImage-8379578b.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+46423ed8fa1f1148c6e4@syzkaller.appspotmail.com RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 20504 at mm/vma.c:734 vma_merge_existing_range+0x1145/0x16f0 mm/vma.c:734 Modules linked in: CPU: 1 UID: 0 PID: 20504 Comm: syz.6.5485 Not tainted 6.13.0-rc4-syzkaller-00069-g8379578b11d5 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:vma_merge_existing_range+0x1145/0x16f0 mm/vma.c:734 Code: e8 20 24 0f 00 4d 2b 7d 00 4d 89 ec 48 8b 7c 24 38 e9 7f 01 00 00 e8 3a bc a8 ff 90 0f 0b 90 e9 a8 f1 ff ff e8 2c bc a8 ff 90 <0f> 0b 90 e9 0e f2 ff ff e8 1e bc a8 ff 90 0f 0b 90 4d 85 ed 0f 85 RSP: 0018:ffffc9000ba274a0 EFLAGS: 00010293 RAX: ffffffff81f6b804 RBX: 0000000020c25000 RCX: ffff888060ad1e00 RDX: 0000000000000000 RSI: 0000000020c25000 RDI: 0000000020c25000 RBP: ffffc9000ba275f8 R08: ffffffff81f6aa0d R09: 00000000280000fa R10: ffffc9000ba27810 R11: fffff52001744f07 R12: 0000000020c25000 R13: ffff888069b666c8 R14: ffffc9000ba276a0 R15: ffff888068d0b1f0 FS: 0000000000000000(0000) GS:ffff8880b8700000(0063) knlGS:00000000f5116b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00007fa9de2c0018 CR3: 000000006b562000 CR4: 00000000003526f0 Call Trace: vma_modify+0x41/0x330 mm/vma.c:1514 vma_modify_flags_name+0x3a6/0x430 mm/vma.c:1563 madvise_update_vma+0x2fe/0xc10 mm/madvise.c:159 madvise_vma_behavior mm/madvise.c:1325 [inline] madvise_walk_vmas mm/madvise.c:1497 [inline] do_madvise+0x1e64/0x4d10 mm/madvise.c:1684 __do_sys_madvise mm/madvise.c:1700 [inline] __se_sys_madvise mm/madvise.c:1698 [inline] __ia32_sys_madvise+0xa6/0xc0 mm/madvise.c:1698 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0xb4/0x110 arch/x86/entry/common.c:386 do_fast_syscall_32+0x34/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7fc2579 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 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f511655c EFLAGS: 00000206 ORIG_RAX: 00000000000000db RAX: ffffffffffffffda RBX: 0000000020c00000 RCX: 0000000000400000 RDX: 000000000000000e RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- 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: 90 nop 31: 90 nop 32: 90 nop 33: 90 nop 34: 90 nop 35: 90 nop 36: 90 nop 37: 90 nop 38: 90 nop 39: 90 nop 3a: 90 nop 3b: 90 nop 3c: 90 nop 3d: 90 nop --- 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@googlegroups.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