Hi all, After some fuzzing using trinity inside a KVM guest, I've stumbled on the following: [ 2674.118324] ------------[ cut here ]------------ [ 2674.119028] kernel BUG at fs/ecryptfs/miscdev.c:155! [ 2674.119028] invalid opcode: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC [ 2674.119028] CPU 0 [ 2674.119028] Pid: 12745, comm: trinity Tainted: G W 3.4.0-rc5-next-20120501-sasha-00003-gfaa6ef1 #106 [ 2674.119028] RIP: 0010:[<ffffffff813722f6>] [<ffffffff813722f6>] ecryptfs_miscdev_release+0x66/0x120 [ 2674.119028] RSP: 0018:ffff88006ed19be8 EFLAGS: 00010282 [ 2674.119028] RAX: 00000000ffffffea RBX: ffff88006eee8000 RCX: ffff88001a109d88 [ 2674.119028] RDX: ffffffff83a3cd00 RSI: 000000009a6561a0 RDI: ffff88006ed19bf0 [ 2674.119028] RBP: ffff88006ed19c08 R08: f2fd966b13e561a0 R09: 4000000000000000 [ 2674.119028] R10: 0000000000000000 R11: 0d00000000000000 R12: 000000009a6561a0 [ 2674.119028] R13: ffff88000c834ab0 R14: ffff88000d02d030 R15: ffff88000c834ab0 [ 2674.119028] FS: 00007f7689f4e700(0000) GS:ffff88000d800000(0000) knlGS:0000000000000000 [ 2674.119028] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [ 2674.119028] CR2: 0000000000000ffc CR3: 0000000003a1c000 CR4: 00000000000407f0 [ 2674.119028] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 2674.119028] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 2674.119028] Process trinity (pid: 12745, threadinfo ffff88006ed18000, task ffff88006eee8000) [ 2674.119028] Stack: [ 2674.119028] 0000000000000008 ffff88001a109d88 ffff8800199b2680 0000000000000008 [ 2674.119028] ffff88006ed19c58 ffffffff811ebcea ffff8800199b2690 ffff8800406b0020 [ 2674.119028] ffff88006ed19c58 ffff8800199b2680 ffff88000cc55a00 0000000000000000 [ 2674.119028] Call Trace: [ 2674.119028] [<ffffffff811ebcea>] __fput+0x11a/0x2c0 [ 2674.119028] [<ffffffff811ebea5>] fput+0x15/0x20 [ 2674.119028] [<ffffffff811e81c2>] filp_close+0x82/0xa0 [ 2674.119028] [<ffffffff810ba5c4>] close_files+0x1b4/0x200 [ 2674.119028] [<ffffffff810ba410>] ? wait_task_stopped+0x3c0/0x3c0 [ 2674.119028] [<ffffffff810ba631>] put_files_struct+0x21/0x180 [ 2674.119028] [<ffffffff82d93820>] ? _raw_spin_unlock+0x30/0x60 [ 2674.119028] [<ffffffff810ba7dd>] exit_files+0x4d/0x60 [ 2674.119028] [<ffffffff810bc85b>] do_exit+0x27b/0x460 [ 2674.119028] [<ffffffff810e74d1>] ? get_parent_ip+0x11/0x50 [ 2674.119028] [<ffffffff810bcae1>] do_group_exit+0xa1/0xe0 [ 2674.119028] [<ffffffff810ccf98>] get_signal_to_deliver+0x348/0x3a0 [ 2674.119028] [<ffffffff8104daf2>] do_signal+0x42/0x120 [ 2674.119028] [<ffffffff8104e58f>] ? do_divide_error+0xaf/0xc0 [ 2674.119028] [<ffffffff82d93fff>] ? retint_signal+0x11/0x92 [ 2674.119028] [<ffffffff8104dc24>] do_notify_resume+0x54/0xa0 [ 2674.119028] [<ffffffff82d9403b>] retint_signal+0x4d/0x92 [ 2674.119028] Code: f1 4f d6 ff 48 8b 83 40 06 00 00 48 8d 7d e8 48 8b 90 88 00 00 00 44 89 e6 e8 37 f0 ff ff 85 c0 75 09 48 8b 7d e8 48 85 ff 75 12 <0f> 0b 0f 1f 84 00 00 00 00 00 eb fe 66 0f 1f 44 00 00 48 83 c7 [ 2674.119028] RIP [<ffffffff813722f6>] ecryptfs_miscdev_release+0x66/0x120 [ 2674.119028] RSP <ffff88006ed19be8> [ 2674.319199] ---[ end trace 44593438a59a9537 ]--- For reference, here are other error messages thrown out during that run: [ 103.989497] ecryptfs_miscdev_open: pid [0xffff8800346dfdc0] has registered with euid [0], but pid [0xffff88000c3aec40] has attempted to open the handle instead [ 347.692999] ecryptfs_miscdev_write: Acceptable packet size range is [6-531], but amount of data written is [10376].120000 iterations. [ 1920.665966] ecryptfs_miscdev_write: Acceptable packet size range is [6-531], but amount of data written is [37505].1117000 iterations. [ 2168.232502] ecryptfs_miscdev_write: Acceptable packet size range is [6-531], but amount of data written is [31302].1220000 iterations. -- To unsubscribe from this list: send the line "unsubscribe ecryptfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
