On Tue, Jun 04, 2013 at 09:50:59PM +0300, Tommi Rantala wrote: > Hello, > > Hit this right after killing trinity with Ctrl-C. Was fuzzing > v3.10-rc4-0-gd683b96 in a qemu virtual machine as the root user. > > Tommi Thanks a lot for the report. If found some bugs when looking at this: I think they were introduced by 2839400f8fe28ce216eeeba3fb97bdf90977f7ad though I don't exactly see how ctrl-c can trigger this. I'll work on patches - is this reproducible at all? > [29175] Random reseed: 3970521611 > [29175] Random reseed: 202886419 > [29175] Random reseed: 2930978521 > [179904.099501] binder: 29175:2539 ioctl 4010630e fff returned -22 > [29175] Random reseed: 2776471322 > [29175] Random reseed: 3086119361 > child 2606 exiting > [29175] Bailing main loop. Exit reason: ctrl-c > [179906.393060] ------------[ cut here ]------------ > [179906.396341] kernel BUG at /build/linux/mm/slub.c:3352! > [179906.399693] invalid opcode: 0000 [#1] SMP DEBUG_PAGEALLOC > [179906.403272] CPU: 0 PID: 29175 Comm: trinity-main Not tainted 3.10.0-rc4 #1 > [179906.407692] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 > [179906.411475] task: ffff8800b69e47c0 ti: ffff880092f2e000 task.ti: > ffff880092f2e000 > [179906.416305] RIP: 0010:[<ffffffff81225255>] [<ffffffff81225255>] > kfree+0x155/0x2c0 > [179906.421462] RSP: 0000:ffff880092f2fdb0 EFLAGS: 00010246 > [179906.424983] RAX: 0100000000000000 RBX: ffff88009e588000 RCX: > 0000000000000000 > [179906.429746] RDX: ffff8800b69e47c0 RSI: 00000000000a0004 RDI: > ffff88009e588000 > [179906.434499] RBP: ffff880092f2fdd8 R08: 0000000000000001 R09: > 0000000000000000 > [179906.439226] R10: 0000000000000000 R11: 0000000000000001 R12: > 0000000000000000 > [179906.443835] R13: ffffea0002796200 R14: ffff8800b9a960f8 R15: > ffff8800ba06f6a0 > [179906.448470] FS: 00007f04cd25c700(0000) GS:ffff8800bf600000(0000) > knlGS:0000000000000000 > [179906.453857] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [179906.456956] CR2: 00007f98e29d8f50 CR3: 000000009294a000 CR4: > 00000000000006f0 > [179906.460558] DR0: 0000000000000000 DR1: 0000000000000000 DR2: > 0000000000000000 > [179906.464059] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: > 0000000000000400 > [179906.467617] Stack: > [179906.468704] ffff88001a7c0000 0000000000000000 0000000000000000 > ffff8800b9a960f8 > [179906.472638] ffff8800ba06f6a0 ffff880092f2fdf0 ffffffff81c1c6df > ffff88001a7c0000 > [179906.476583] ffff880092f2fe18 ffffffff81c1c771 ffff8800b69718c0 > 0000000000000008 > [179906.480377] Call Trace: > [179906.481636] [<ffffffff81c1c6df>] vhost_net_vq_reset+0x7f/0xb0 > [179906.484611] [<ffffffff81c1c771>] vhost_net_release+0x61/0xb0 > [179906.487481] [<ffffffff8123237a>] __fput+0x12a/0x230 > [179906.489968] [<ffffffff81232489>] ____fput+0x9/0x10 > [179906.492422] [<ffffffff8113a79e>] task_work_run+0xae/0xf0 > [179906.495169] [<ffffffff811172bc>] do_exit+0x44c/0xb40 > [179906.497789] [<ffffffff822a24d8>] ? retint_swapgs+0x13/0x1b > [179906.500652] [<ffffffff81117a74>] do_group_exit+0x84/0xd0 > [179906.503348] [<ffffffff81117ad2>] SyS_exit_group+0x12/0x20 > [179906.506146] [<ffffffff822a2e29>] system_call_fastpath+0x16/0x1b > [179906.509147] Code: 49 c1 ed 0c 49 c1 e5 06 49 01 c5 49 8b 45 00 f6 > c4 80 74 0a 4d 8b 6d 30 66 0f 1f 44 00 00 49 8b 45 00 a8 80 75 28 f6 > c4 c0 75 02 <0f> 0b 49 8b 45 00 31 f6 f6 c4 40 74 04 41 8b 75 68 4c 89 > ef e8 > [179906.522213] RIP [<ffffffff81225255>] kfree+0x155/0x2c0 > [179906.524937] RSP <ffff880092f2fdb0> > [179906.575627] ---[ end trace 3d4ce10faaa29990 ]--- > [179906.577103] Fixing recursive fault but reboot is needed! > [29174] Watchdog exiting -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
