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List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6e02:12e8:b0:3a7:e592:55ee with SMTP id e9e14a558f8ab-3aff8b9d0admr177433655ab.20.1734412166306; Mon, 16 Dec 2024 21:09:26 -0800 (PST) Date: Mon, 16 Dec 2024 21:09:26 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <67610786.050a0220.37aaf.0149.GAE@google.com> Subject: [syzbot] [gpio?] general protection fault in gpiolib_seq_stop From: syzbot To: brgl@bgdev.pl, linus.walleij@linaro.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Hello, syzbot found the following issue on: HEAD commit: 2d8308bf5b67 Merge tag 'scsi-fixes' of git://git.kernel.or.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=1383bcdf980000 kernel config: https://syzkaller.appspot.com/x/.config?x=99a5586995ec03b2 dashboard link: https://syzkaller.appspot.com/bug?extid=b95d0c98f01e7a95da72 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=1189c344580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=103b94f8580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/66039e873a32/disk-2d8308bf.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/60744ba3f743/vmlinux-2d8308bf.xz kernel image: https://storage.googleapis.com/syzbot-assets/25731ba013ad/bzImage-2d8308bf.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+b95d0c98f01e7a95da72@syzkaller.appspotmail.com RDX: 0000000000000008 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000001 R08: 00007fffecdd9167 R09: 00007f4106f40032 R10: 0000000000000005 R11: 0000000000000246 R12: 00007f4106f46618 R13: 00007fffecdd95a8 R14: 0000000000000001 R15: 0000000000000001 Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 UID: 0 PID: 5829 Comm: syz-executor520 Not tainted 6.13.0-rc2-syzkaller-00362-g2d8308bf5b67 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 RIP: 0010:gpiolib_seq_stop+0x4c/0xe0 drivers/gpio/gpiolib.c:5067 Code: 48 c1 ea 03 80 3c 02 00 0f 85 98 00 00 00 48 8b 9b e0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 04 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 60 8b RSP: 0018:ffffc90003e1fa58 EFLAGS: 00010247 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff88802463a018 RDX: 0000000000000000 RSI: ffffffff84cc96be RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000dc0 R09: 00000000ffffffff R10: ffffffff8df7c5d3 R11: 0000000000000001 R12: ffffffff8bb596a0 R13: 0000000000000000 R14: 0000000000000000 R15: ffffc90003e1fc40 FS: 0000555557ff9380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055e43c381608 CR3: 0000000076408000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: traverse.part.0.constprop.0+0x2bd/0x640 fs/seq_file.c:131 traverse fs/seq_file.c:98 [inline] seq_read_iter+0x934/0x12b0 fs/seq_file.c:195 seq_read+0x39f/0x4e0 fs/seq_file.c:162 full_proxy_read+0xfb/0x1b0 fs/debugfs/file.c:351 vfs_read+0x1df/0xbe0 fs/read_write.c:563 ksys_pread64 fs/read_write.c:756 [inline] __do_sys_pread64 fs/read_write.c:764 [inline] __se_sys_pread64 fs/read_write.c:761 [inline] __x64_sys_pread64+0x1f6/0x250 fs/read_write.c:761 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: 0033:0x7f4106edb2e9 Code: 48 83 c4 28 c3 e8 17 1a 00 00 0f 1f 80 00 00 00 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fffecdd93c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000011 RAX: ffffffffffffffda RBX: 00007fffecdd93d0 RCX: 00007f4106edb2e9 RDX: 0000000000000008 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000001 R08: 00007fffecdd9167 R09: 00007f4106f40032 R10: 0000000000000005 R11: 0000000000000246 R12: 00007f4106f46618 R13: 00007fffecdd95a8 R14: 0000000000000001 R15: 0000000000000001 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:gpiolib_seq_stop+0x4c/0xe0 drivers/gpio/gpiolib.c:5067 Code: 48 c1 ea 03 80 3c 02 00 0f 85 98 00 00 00 48 8b 9b e0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d 7b 04 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 60 8b RSP: 0018:ffffc90003e1fa58 EFLAGS: 00010247 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff88802463a018 RDX: 0000000000000000 RSI: ffffffff84cc96be RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000dc0 R09: 00000000ffffffff R10: ffffffff8df7c5d3 R11: 0000000000000001 R12: ffffffff8bb596a0 R13: 0000000000000000 R14: 0000000000000000 R15: ffffc90003e1fc40 FS: 0000555557ff9380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000080 CR3: 0000000076408000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 48 c1 ea 03 shr $0x3,%rdx 4: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 8: 0f 85 98 00 00 00 jne 0xa6 e: 48 8b 9b e0 00 00 00 mov 0xe0(%rbx),%rbx 15: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1c: fc ff df 1f: 48 8d 7b 04 lea 0x4(%rbx),%rdi 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 0f b6 14 02 movzbl (%rdx,%rax,1),%edx <-- trapping instruction 2e: 48 89 f8 mov %rdi,%rax 31: 83 e0 07 and $0x7,%eax 34: 83 c0 03 add $0x3,%eax 37: 38 d0 cmp %dl,%al 39: 7c 04 jl 0x3f 3b: 84 d2 test %dl,%dl 3d: 75 60 jne 0x9f 3f: 8b .byte 0x8b --- 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 syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. 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