Bug 42202
| Summary: | Caught 64-bit read from uninitialized memory in kmem_cache_alloc | ||
|---|---|---|---|
| Product: | Memory Management | Reporter: | Christian Casteyde (casteyde.christian) |
| Component: | Page Allocator | Assignee: | Andrew Morton (akpm) |
| Status: | RESOLVED DUPLICATE | ||
| Severity: | normal | CC: | florian, maciej.rutecki, rjw |
| Priority: | P1 | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Kernel Version: | 3.1-rc4 | Subsystem: | |
| Regression: | Yes | Bisected commit-id: | |
| Bug Depends on: | |||
| Bug Blocks: | 40982 | ||
Maybe a duplicate of https://bugzilla.kernel.org/show_bug.cgi?id=36512. *** This bug has been marked as a duplicate of bug 36512 *** |
Acer Aspire 7750G Core i7 in 64bits mode Slackware64 13.37 kmemcheck configured Since 3.1-rc4, I have the following warning at boot: udev[1745]: renamed network interface eth0 to eth1 udev[1699]: renamed network interface wlan0-eth0 to eth0 WARNING: kmemcheck: Caught 64-bit read from uninitialized memory (ffff8801c11865d0) 000110000000adde000220000000addee06d18c10188ffff403d27c20188ffff f f f f f f f f f f f f f f f f u u u u u u u u u u u u u u u u ^ Pid: 1700, comm: udevd Tainted: G W 3.1.0-rc4 #13 Acer Aspire 7750G/JE70_HR RIP: 0010:[<ffffffff8111aea6>] [<ffffffff8111aea6>] kmem_cache_alloc+0x66/0x120 RSP: 0018:ffff8801c2103b38 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff8801c23f6d10 RCX: 0000000000062720 RDX: 0000000000062718 RSI: 00000000001d43a0 RDI: 00000000000000d0 RBP: ffff8801c2103b68 R08: ffff8801c2109300 R09: 0000000000000001 R10: ffff8801c2109300 R11: 0000000000000000 R12: ffff8801c11865d0 R13: ffff8801c7414400 R14: 00000000000000d0 R15: ffffffff8110519f FS: 00007fec4c108720(0000) GS:ffff8801c7800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff8801c604a0b0 CR3: 00000001c20f9000 CR4: 00000000000406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400 [<ffffffff8110519f>] anon_vma_prepare+0x5f/0x190 [<ffffffff810fb0b6>] handle_pte_fault+0x576/0x790 [<ffffffff810fc5ff>] handle_mm_fault+0x11f/0x1c0 [<ffffffff810575d2>] do_page_fault+0x142/0x490 [<ffffffff817db57f>] page_fault+0x1f/0x30 [<ffffffff811858a0>] sysfs_read_file+0xf0/0x1a0 [<ffffffff8112166a>] vfs_read+0xaa/0x160 [<ffffffff81121768>] sys_read+0x48/0x90 [<ffffffff817dbabb>] system_call_fastpath+0x16/0x1b [<ffffffffffffffff>] 0xffffffffffffffff Adding 2097148k swap on /dev/sda1. Priority:-1 extents:1 across:2097148k EXT4-fs (sda2): re-mounted. Opts: (null) I do not know if it occurs with previous rc of 3.1, but I don't have it with 3.0.