From mboxrd@z Thu Jan 1 00:00:00 1970 From: syzbot Subject: general protection fault in integrity_inode_free Date: Wed, 26 Sep 2018 00:47:02 -0700 Message-ID: <0000000000009581bf0576c16d3a@google.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes To: davem@davemloft.net, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, syzkaller-bugs@googlegroups.com Return-path: Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: 846e8dd47c26 Merge tag 'scsi-fixes' of git://git.kernel.or.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=12a59d56400000 kernel config: https://syzkaller.appspot.com/x/.config?x=dfb440e26f0a6f6f dashboard link: https://syzkaller.appspot.com/bug?extid=4c0fa7d385ea5af34e91 compiler: gcc (GCC) 8.0.1 20180413 (experimental) Unfortunately, I don't have any reproducer for this crash yet. IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+4c0fa7d385ea5af34e91@syzkaller.appspotmail.com __do_sys_sendmsg net/socket.c:2163 [inline] __se_sys_sendmsg net/socket.c:2161 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2161 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access entry_SYSCALL_64_after_hwframe+0x49/0xbe general protection fault: 0000 [#1] PREEMPT SMP KASAN RIP: 0033:0x457579 CPU: 0 PID: 8727 Comm: syz-executor3 Not tainted 4.19.0-rc5+ #33 Code: 1d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RSP: 002b:00007f07f2e4bc78 EFLAGS: 00000246 RIP: 0010:__rb_erase_augmented include/linux/rbtree_augmented.h:168 [inline] RIP: 0010:rb_erase+0x306/0x3710 lib/rbtree.c:459 ORIG_RAX: 000000000000002e Code: c7 81 28 01 00 00 f2 f2 f2 f2 c7 81 2c 01 00 00 00 f2 f2 f2 48 89 f9 65 48 8b 1c 25 28 00 00 00 48 89 5d d0 31 db 48 c1 e9 03 <42> 80 3c 01 00 0f 85 41 1c 00 00 4c 8d 48 10 4c 8b 78 08 48 b9 00 RAX: ffffffffffffffda RBX: 00007f07f2e4bc90 RCX: 0000000000457579 RSP: 0018:ffff88018620e918 EFLAGS: 00010202 RDX: 0000000000000000 RSI: 000000002000b000 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f07f2e4c6d4 RDX: 1ffff10030c41d2b RSI: ffffffff8b5a08a0 RDI: 0000000000000008 R13: 00000000004c38e1 R14: 00000000004d5730 R15: 0000000000000004 RBP: ffff88018620f320 R08: dffffc0000000000 R09: fffffbfff135d5c8 kobject: 'loop5' (00000000eac6d22a): kobject_uevent_env R10: fffffbfff135d5c8 R11: ffffffff89aeae43 R12: ffff8801bacb38f0 R13: dffffc0000000000 R14: ffff88018620f2f8 R15: ffff88018620f438 overlayfs: unrecognized mount option "smackfstransmute=upperdir" or missing value FS: 00007ff9677ec700(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b31324000 CR3: 00000001c2773000 CR4: 00000000001406f0 Call Trace: integrity_inode_free+0x12f/0x320 security/integrity/iint.c:150 security_inode_free+0x19/0x90 security/security.c:453 __destroy_inode+0x328/0x820 fs/inode.c:238 destroy_inode+0xda/0x200 fs/inode.c:265 evict+0x5e0/0x980 fs/inode.c:575 iput_final fs/inode.c:1547 [inline] iput+0x679/0xa90 fs/inode.c:1573 swap_inode_boot_loader fs/ext4/ioctl.c:188 [inline] ext4_ioctl+0x236f/0x4210 fs/ext4/ioctl.c:865 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0x1de/0x1720 fs/ioctl.c:685 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:702 __do_sys_ioctl fs/ioctl.c:709 [inline] __se_sys_ioctl fs/ioctl.c:707 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:707 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457579 Code: 1d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 eb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ff9677ebc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000457579 RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000003 RBP: 000000000072c040 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff9677ec6d4 R13: 00000000004bf626 R14: 00000000004cf4c0 R15: 00000000ffffffff Modules linked in: ---[ end trace 6d41a32e43d56085 ]--- RIP: 0010:__rb_erase_augmented include/linux/rbtree_augmented.h:168 [inline] RIP: 0010:rb_erase+0x306/0x3710 lib/rbtree.c:459 Code: c7 81 28 01 00 00 f2 f2 f2 f2 c7 81 2c 01 00 00 00 f2 f2 f2 48 89 f9 65 48 8b 1c 25 28 00 00 00 48 89 5d d0 31 db 48 c1 e9 03 <42> 80 3c 01 00 0f 85 41 1c 00 00 4c 8d 48 10 4c 8b 78 08 48 b9 00 RSP: 0018:ffff88018620e918 EFLAGS: 00010202 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001 RDX: 1ffff10030c41d2b RSI: ffffffff8b5a08a0 RDI: 0000000000000008 RBP: ffff88018620f320 R08: dffffc0000000000 R09: fffffbfff135d5c8 R10: fffffbfff135d5c8 R11: ffffffff89aeae43 R12: ffff8801bacb38f0 R13: dffffc0000000000 R14: ffff88018620f2f8 R15: ffff88018620f438 FS: 00007ff9677ec700(0000) GS:ffff8801dac00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b31324000 CR3: 00000001c2773000 CR4: 00000000001406f0 --- This bug is generated by a bot. 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