had caught a ops on my 2 sockets SNB EP server. but can not reproduce it. send out as a reminder: on tip/master, head : a7b7a8ad4476bb641c8455a4e0d7d0fd3eb86f90 Oops: 0000 [#1] SMP [ 21.967103] Modules linked in: iTCO_wdt iTCO_vendor_support i2c_i801 igb microcode lpc_ich ioatdma i2c_core joydev mfd_core hed dca ipv6 isci libsas scsi_transport_sas [ 21.967109] CPU 7 [ 21.967109] Pid: 754, comm: systemd-readahe Not tainted 3.7.0-rc5-tip+ #20 Intel Corporation S2600CP/S2600CP [ 21.967115] RIP: 0010:[<ffffffff8114987f>] [<ffffffff8114987f>] __fd_install+0x2d/0x4f [ 21.967117] RSP: 0018:ffff8808187f7de8 EFLAGS: 00010246 [ 21.967118] RAX: ffff881018bfb700 RBX: ffff88081c2f5d80 RCX: ffff880818dfc620 [ 21.967120] RDX: ffff881019b10000 RSI: 00000000ffffffff RDI: ffff88081c2f5e00 [ 21.967122] RBP: ffff8808187f7e08 R08: ffff88101b37e008 R09: ffffffff811644a6 [ 21.967123] R10: ffff880818005e00 R11: ffff880818005e00 R12: 00000000ffffffff [ 21.967125] R13: 0000000000000000 R14: 00000000fffffff2 R15: 0000000000000000 [ 21.967128] FS: 00007ffa79ead7e0(0000) GS:ffff88081fce0000(0000) knlGS:0000000000000000 [ 21.967130] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.967131] CR2: ffff881819b0fff8 CR3: 000000081be54000 CR4: 00000000000407e0 [ 21.967133] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.967135] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 21.967137] Process systemd-readahe (pid: 754, threadinfo ffff8808187f6000, task ffff880818dfc620) [ 21.967138] Stack: [ 21.967145] ffff880818005e00 ffff88101b37e000 ffff880818005e00 00007fff57d29378 [ 21.967150] ffff8808187f7e18 ffffffff811498c6 ffff8808187f7ed8 ffffffff81167a7c [ 21.967155] ffff880818dfc620 ffff880818dfc620 ffff880818004d00 ffff880818005e40 [ 21.967156] Call Trace: [ 21.967162] [<ffffffff811498c6>] fd_install+0x25/0x27 [ 21.967168] [<ffffffff81167a7c>] fanotify_read+0x38d/0x475 [ 21.967176] [<ffffffff8106716e>] ? remove_wait_queue+0x3a/0x3a [ 21.967181] [<ffffffff81133e21>] vfs_read+0xa9/0xf0 [ 21.967186] [<ffffffff811422cb>] ? poll_select_set_timeout+0x63/0x81 [ 21.967189] [<ffffffff81133ec1>] sys_read+0x59/0x7e [ 21.967195] [<ffffffff814bd699>] system_call_fastpath+0x16/0x1b [ 21.967222] Code: 66 66 90 55 48 89 e5 41 55 49 89 d5 41 54 41 89 f4 53 48 89 fb 48 8d bf 80 00 00 00 41 53 e8 69 ce 36 00 48 8b 43 08 48 8b 50 08 <4a> 83 3c e2 00 74 02 0f 0b 48 8b 40 08 4e 89 2c e0 66 83 83 80 [ 21.967226] RIP [<ffffffff8114987f>] __fd_install+0x2d/0x4f [ 21.967227] RSP <ffff8808187f7de8> [ 21.967228] CR2: ffff881819b0fff8 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>