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Mon, 09 Dec 2024 03:20:19 -0800 (PST) Date: Mon, 09 Dec 2024 03:20:19 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6756d273.050a0220.2477f.003d.GAE@google.com> Subject: [syzbot] [mm?] general protection fault in find_mergeable_anon_vma 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-Stat-Signature: uq8mqfi1wpt4yswuqxq85z3dryqc9rcr X-Rspam-User: X-Rspamd-Queue-Id: 6ABA518000E X-Rspamd-Server: rspam08 X-HE-Tag: 1733743206-456476 X-HE-Meta: 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 bKHGQo84 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 kTqTy8zB MBMWjVyjLNXhd8NI7R6NBS1VUyLNMCFx3ftfhy0+iFJo8e5MxIajUqKCiBPYpN6bfPG/ycQZvt8WlamJhKaLY+Dewo3xvpT+/y4sL7XZv9Cd1obGxl9lPHQXZkS1P4hdPTf9NoHosSldoYB1POkNd+uX5KPeXa3o0dRuQ3Q/V38BlVGbE+0qT702kZFxYhmL7CbHp+3DvAY9o0cChkVmfWWALeYkrFtFbPuTmjiHthEdGA+VeiXvGI5dcv0DmdeqsSnfjavu6c4mlzMfQHxM1+G5IL9a1//MWysl31ybgTc6KfW7CEdjtTTn22xjljg73PHoIi8ff0Vaw6XobBH0csdXV/NZAIuQnzIkZlnKpm0kFJJjw3GDlMOpvb4JEBtY+Pcx+/X8x42Wv2AW3x6isUADkvAMCVqg 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: feffde684ac2 Merge tag 'for-6.13-rc1-tag' of git://git.ker.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=17f85fc0580000 kernel config: https://syzkaller.appspot.com/x/.config?x=50c7a61469ce77e7 dashboard link: https://syzkaller.appspot.com/bug?extid=2d788f4f7cb660dac4b7 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-feffde68.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/6135c7297e8e/vmlinux-feffde68.xz kernel image: https://storage.googleapis.com/syzbot-assets/6c154fdcc9cb/bzImage-feffde68.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+2d788f4f7cb660dac4b7@syzkaller.appspotmail.com Oops: general protection fault, probably for non-canonical address 0xdffffc0000000080: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000400-0x0000000000000407] CPU: 0 UID: 0 PID: 5319 Comm: syz.0.0 Not tainted 6.13.0-rc1-syzkaller-00025-gfeffde684ac2 #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:anon_vma_compatible mm/vma.c:1804 [inline] RIP: 0010:reusable_anon_vma mm/vma.c:1837 [inline] RIP: 0010:find_mergeable_anon_vma+0x1e4/0x8f0 mm/vma.c:1863 Code: 00 00 00 00 fc ff df 41 80 3c 06 00 74 08 4c 89 ff e8 10 39 10 00 4d 8b 37 4d 89 ec 49 c1 ec 03 48 b8 00 00 00 00 00 fc ff df <41> 80 3c 04 00 74 08 4c 89 ef e8 ed 38 10 00 49 8b 5d 00 4c 89 f7 RSP: 0018:ffffc9000d3df500 EFLAGS: 00010203 RAX: dffffc0000000000 RBX: ffffc9000d3df540 RCX: ffff88801cf80000 RDX: 0000000000000000 RSI: ffffffff900062a0 RDI: 0000000000000000 RBP: ffffc9000d3df610 R08: 0000000000000005 R09: ffffffff8bc6b642 R10: 0000000000000003 R11: ffff88801cf80000 R12: 0000000000000080 R13: 0000000000000406 R14: 0000000021000000 R15: ffff8880120d4ca0 FS: 00007f137f7e86c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000140 CR3: 0000000040256000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __anon_vma_prepare+0xd9/0x4a0 mm/rmap.c:199 anon_vma_prepare include/linux/rmap.h:164 [inline] uprobe_write_opcode+0x1a95/0x2d80 kernel/events/uprobes.c:516 install_breakpoint+0x4fc/0x660 kernel/events/uprobes.c:1135 register_for_each_vma+0xa08/0xc50 kernel/events/uprobes.c:1275 uprobe_register+0x811/0x970 kernel/events/uprobes.c:1384 bpf_uprobe_multi_link_attach+0xaca/0xdd0 kernel/trace/bpf_trace.c:3442 link_create+0x6d7/0x870 kernel/bpf/syscall.c:5399 __sys_bpf+0x4bc/0x810 kernel/bpf/syscall.c:5860 __do_sys_bpf kernel/bpf/syscall.c:5897 [inline] __se_sys_bpf kernel/bpf/syscall.c:5895 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5895 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: 0033:0x7f137e97ff19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f137f7e8058 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f137eb46080 RCX: 00007f137e97ff19 RDX: 000000000000003c RSI: 00000000200012c0 RDI: 000000000000001c RBP: 00007f137e9f3986 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f137eb46080 R15: 00007fff36be56b8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:anon_vma_compatible mm/vma.c:1804 [inline] RIP: 0010:reusable_anon_vma mm/vma.c:1837 [inline] RIP: 0010:find_mergeable_anon_vma+0x1e4/0x8f0 mm/vma.c:1863 Code: 00 00 00 00 fc ff df 41 80 3c 06 00 74 08 4c 89 ff e8 10 39 10 00 4d 8b 37 4d 89 ec 49 c1 ec 03 48 b8 00 00 00 00 00 fc ff df <41> 80 3c 04 00 74 08 4c 89 ef e8 ed 38 10 00 49 8b 5d 00 4c 89 f7 RSP: 0018:ffffc9000d3df500 EFLAGS: 00010203 RAX: dffffc0000000000 RBX: ffffc9000d3df540 RCX: ffff88801cf80000 RDX: 0000000000000000 RSI: ffffffff900062a0 RDI: 0000000000000000 RBP: ffffc9000d3df610 R08: 0000000000000005 R09: ffffffff8bc6b642 R10: 0000000000000003 R11: ffff88801cf80000 R12: 0000000000000080 R13: 0000000000000406 R14: 0000000021000000 R15: ffff8880120d4ca0 FS: 00007f137f7e86c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020002240 CR3: 0000000040256000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 6 bytes skipped: 0: df 41 80 filds -0x80(%rcx) 3: 3c 06 cmp $0x6,%al 5: 00 74 08 4c add %dh,0x4c(%rax,%rcx,1) 9: 89 ff mov %edi,%edi b: e8 10 39 10 00 call 0x103920 10: 4d 8b 37 mov (%r15),%r14 13: 4d 89 ec mov %r13,%r12 16: 49 c1 ec 03 shr $0x3,%r12 1a: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 21: fc ff df * 24: 41 80 3c 04 00 cmpb $0x0,(%r12,%rax,1) <-- trapping instruction 29: 74 08 je 0x33 2b: 4c 89 ef mov %r13,%rdi 2e: e8 ed 38 10 00 call 0x103920 33: 49 8b 5d 00 mov 0x0(%r13),%rbx 37: 4c 89 f7 mov %r14,%rdi --- 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