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Tue, 27 Aug 2024 12:38:21 -0700 (PDT) Date: Tue, 27 Aug 2024 12:38:21 -0700 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000053d3e60620af625f@google.com> Subject: Re: [syzbot] [mm?] BUG: unable to handle kernel paging request in mmap_region From: syzbot To: liam.howlett@oracle.com Cc: akpm@linux-foundation.org, liam.howlett@oracle.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: rspam07 X-Rspamd-Queue-Id: 38A51180003 X-Stat-Signature: zcg7ky4g744n6x79jhqfsuok3h97aw1h X-Rspam-User: X-HE-Tag: 1724787502-570594 X-HE-Meta: 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 PNhqBuUM +Lg6CHJ1eJYRRreTpH38yhycPEfF8x1lf9QN1gBgMduF2furSkO9zPWA+a1cWicVotKc1prl4ooPgWS0yrjf3SZBsO2W97w4PqzW0L9eTxvnpu41f5lzKIfYnD0ytgCO8PdLHywJMSBmxWvb8rP3TkWYp+05Y0soUxy6wsVG+RIm84T0maPSY222umP5puaelmLnlu4b8cIv1mXbW1l+bq+xXGyK2Ybu4VzucGMdtAvRsas+TN9pRwqExloLPfSU4B9dNudf1HQq5dVTrGmPuSFzFUr3qwJaf2+zgsf25xRlmlon9a4g8UnDedJUQ1am4tkY+2Z5AI+k9lt+Uc0ZP4Lemo/UmpyitfUPVaNyMJlzAekIvu4lyISv51oJuhH8PzFSsS5tcgI9o0dTAJ934ioPXp9tHyJx70E3bm0LXxsGMnxNxQHPIwK1S25sul4p1FqxrwhwrP1rgCmzSRTv8frPF7/v4KkNSa00ORTvZFPxgMBBvZHSn9kUPtdm9TyLjfsXaBBDaL8KNW0/N6nQ+BlPsEYfH08LERTkghutrgpM9l5IrrjvQ02yNdJODoKuHAGgDq0l7wuI9r2p8tuHXCfSCem3w9Ciq4kgFVF1gJt5q0kS4Z6Gd/4zXKS/gDYOBy4QOMET3ryj4BI/rO8RqoVctuZ+xDJ6xscc+Pd7kp/YHR2rPocFkR0vejWe7fMwDPX1XovWZOUc8AfUUrZZqh5ACu4riQslKDM6hEKY6Ipd+cB6Wt2WpovE78mdELKmrU5Jk6UzuMDJoDkuSWWGeApvuex6mpn8Wke4u3OM69dOYA+WMCLScdKQxHnA31vnB86pOrHIJ+E189HwblkvhXFFpuykQAexElqvv7X/r9Nxu22ZCQKJ56G/WqB7oZXnxZbnSkyq2X4HPbs8nSJScRQ3ogGDBS7cL8Oe6AMf+x8f36oiQblkuCyM2Fqf70qDVqAwFirqDbDEdw2PwickrIUvvWzh8 OeMOhqRq r9qZtDxsOorDV5zYRhYqRNZp1HbdwphOF4Bnm1Dg3FsCW1I1P8EEen7IbWEP/7pqzYmNZudqkLP/TWzuv2+R8PyHqd2jJmLBdEqxy4fiPXgvqeeylADM2QRshhEqcisiZRvEHkBUetH9bGWSyLAtHEMLE8LZZwpB4D7nowAgKW9DZsikIZuDbucCTazfZMqc/Fb6ioGWxlK88bjXvhxss0KaDaA9tjh0qt1T3SPp6a4Mv9gg/BQqCd32xpb8A7JwBSC9EF0/Nq6uaUE0xZISzUQt56SXd0D5Q3Xmj0QLlR4mYyZlxpbqou5c+gt6Na91iFujiXxe5ky7O7GuKe0Mc/WSYRwReXt6BK3yGTE273+i0XUri7BdTiM6zQzcP/Er01VVHp4cOg9paWM9HcVn+dtj4NyQGO7ETzwIPrqtmL0d5qy5GnT3cA== 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: > * syzbot [240827 13:28]: >> Hello, >> >> syzbot found the following issue on: >> >> HEAD commit: 94ede2a3e913 profiling: remove stale percpu flip buffer va.. >> git tree: upstream >> console output: https://syzkaller.appspot.com/x/log.txt?x=122f6d9d980000 >> kernel config: https://syzkaller.appspot.com/x/.config?x=8b0cca2f3880513d >> dashboard link: https://syzkaller.appspot.com/bug?extid=3bca0d9eb36e75bc36ed >> 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: https://storage.googleapis.com/syzbot-assets/e10dde6d5041/disk-94ede2a3.raw.xz >> vmlinux: https://storage.googleapis.com/syzbot-assets/3bda8d01811d/vmlinux-94ede2a3.xz >> kernel image: https://storage.googleapis.com/syzbot-assets/653dc61d9ae6/bzImage-94ede2a3.xz >> >> IMPORTANT: if you fix the issue, please add the following tag to the commit: >> Reported-by: syzbot+3bca0d9eb36e75bc36ed@syzkaller.appspotmail.com >> >> kernel tried to execute NX-protected page - exploit attempt? (uid: 0) >> BUG: unable to handle page fault for address: ffffea000169a5c0 >> #PF: supervisor instruction fetch in kernel mode >> #PF: error_code(0x0011) - permissions violation >> PGD 13fff7067 P4D 13fff7067 PUD 13fff6067 PMD 800000013d4001e3 >> Oops: Oops: 0011 [#1] PREEMPT SMP KASAN NOPTI >> CPU: 0 UID: 0 PID: 6910 Comm: syz.0.357 Not tainted 6.11.0-rc1-syzkaller-00043-g94ede2a3e913 #0 >> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 >> RIP: 0010:0xffffea000169a5c0 >> Code: ad de 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 24 00 24 00 00 00 00 00 ff ff ff fd 01 00 00 00 01 e8 e4 2c 80 88 ff ff <00> 00 00 00 00 f0 ff 00 00 00 00 00 00 00 00 00 22 01 00 00 00 00 >> RSP: 0018:ffffc90002e0f8f8 EFLAGS: 00010286 >> RAX: 1ffff1100be13426 RBX: ffff88805f09a130 RCX: dffffc0000000000 >> RDX: ffff88807f842600 RSI: 0000000000000002 RDI: ffff88805f09a120 >> RBP: ffffc90002e0fa30 R08: ffff88802b3aecc7 R09: 1ffff11005675d98 >> R10: dffffc0000000000 R11: ffffea000169a5c0 R12: ffff88807f842600 >> R13: ffff88805f09a120 R14: ffff88802b3aed50 R15: ffff88802b3aecb8 >> FS: 00007f32016ce6c0(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000 >> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 >> CR2: ffffea000169a5c0 CR3: 000000005af9c000 CR4: 0000000000350ef0 >> Call Trace: >> >> mmap_region+0x1891/0x2090 mm/mmap.c:3058 >> do_mmap+0x8f9/0x1010 mm/mmap.c:1468 >> vm_mmap_pgoff+0x1dd/0x3d0 mm/util.c:588 >> ksys_mmap_pgoff+0x4f1/0x720 mm/mmap.c:1514 >> 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: 0033:0x7f3200977299 >> 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:00007f32016ce048 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 >> RAX: ffffffffffffffda RBX: 00007f3200b06058 RCX: 00007f3200977299 >> RDX: 0000000000000001 RSI: 0000000000003000 RDI: 0000000020000000 >> RBP: 00007f32009e48e6 R08: 0000000000000012 R09: 0000000000000000 >> R10: 0000000000000012 R11: 0000000000000246 R12: 0000000000000000 >> R13: 000000000000006e R14: 00007f3200b06058 R15: 00007ffebfee75d8 >> >> Modules linked in: >> CR2: ffffea000169a5c0 >> ---[ end trace 0000000000000000 ]--- >> RIP: 0010:0xffffea000169a5c0 >> Code: ad de 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 24 00 24 00 00 00 00 00 ff ff ff fd 01 00 00 00 01 e8 e4 2c 80 88 ff ff <00> 00 00 00 00 f0 ff 00 00 00 00 00 00 00 00 00 22 01 00 00 00 00 >> RSP: 0018:ffffc90002e0f8f8 EFLAGS: 00010286 >> RAX: 1ffff1100be13426 RBX: ffff88805f09a130 RCX: dffffc0000000000 >> RDX: ffff88807f842600 RSI: 0000000000000002 RDI: ffff88805f09a120 >> RBP: ffffc90002e0fa30 R08: ffff88802b3aecc7 R09: 1ffff11005675d98 >> R10: dffffc0000000000 R11: ffffea000169a5c0 R12: ffff88807f842600 >> R13: ffff88805f09a120 R14: ffff88802b3aed50 R15: ffff88802b3aecb8 >> FS: 00007f32016ce6c0(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000 >> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 >> CR2: ffffea000169a5c0 CR3: 000000005af9c000 CR4: 0000000000350ef0 >> >> >> --- >> 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 > > #syz test: git://git.infradead.org/users/jedix/linux-maple.git 71e79d60d610967946f5b5a9fe12dd239216ac39 This crash does not have a reproducer. I cannot test it. > >> >> 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 >>