Messages in this thread | | | Date | Sun, 3 Dec 2017 12:38:33 -0800 | From | Eric Biggers <> | Subject | Re: general protection fault in dax_alloc_inode |
| |
On Tue, Nov 14, 2017 at 04:46:01AM -0800, syzbot wrote: > RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 > R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 > kasan: CONFIG_KASAN_INLINE enabled > kasan: GPF could be caused by NULL-ptr deref or user memory access > general protection fault: 0000 [#1] SMP KASAN > Dumping ftrace buffer: > (ftrace buffer empty) > Modules linked in: > CPU: 1 PID: 31095 Comm: syz-executor3 Not tainted 4.14.0-rc8+ #75 > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 01/01/2011 > task: ffff8801cae96000 task.stack: ffff8801d2438000 > RIP: 0010:dax_alloc_inode+0x3b/0x70 drivers/dax/super.c:348 > RSP: 0018:ffff8801d243f8d0 EFLAGS: 00010203 > RAX: 0000000000000010 RBX: 0000000000000000 RCX: 000000000000000b > RDX: dffffc0000000000 RSI: ffffffff85b34340 RDI: 000000000000005c > RBP: ffff8801d243f8e0 R08: 0000000000000001 R09: 0000000000000000 > R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff83595ba0 > R13: dffffc0000000000 R14: ffff8801cedbc5c0 R15: 0000000064646178 > FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f7742b40 > CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 > CR2: 00000000f778cdb0 CR3: 00000001c5739000 CR4: 00000000001406e0 > DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 > Call Trace: > alloc_inode+0x65/0x180 fs/inode.c:208 > new_inode_pseudo+0x69/0x190 fs/inode.c:890 > new_inode+0x1c/0x40 fs/inode.c:919 > mount_pseudo_xattr+0x288/0x560 fs/libfs.c:261 > mount_pseudo include/linux/fs.h:2137 [inline] > dax_mount+0x2e/0x40 drivers/dax/super.c:388 > mount_fs+0x66/0x2d0 fs/super.c:1223 > vfs_kern_mount.part.26+0xc6/0x4a0 fs/namespace.c:1037 > vfs_kern_mount fs/namespace.c:2509 [inline] > do_new_mount fs/namespace.c:2512 [inline] > do_mount+0xea1/0x2bb0 fs/namespace.c:2841 > C_SYSC_mount fs/compat.c:195 [inline] > compat_SyS_mount+0xd0/0x1070 fs/compat.c:160 > do_syscall_32_irqs_on arch/x86/entry/common.c:329 [inline] > do_fast_syscall_32+0x3f2/0xf05 arch/x86/entry/common.c:391 > entry_SYSENTER_compat+0x51/0x60 arch/x86/entry/entry_64_compat.S:125
#syz fix: dax: fix general protection fault in dax_alloc_inode
| |