Hi, I updated my archlinux to use a grsec kernel (version 4.4.6). Now I get lots of errors from PAX and all backtraces show mention btrfs.
Is this a known problem? Is there anything I can help to debug this? This is the dump from the logs: Apr 11 07:43:36 kernel: PAX: refcount overflow detected in: pacman:11700, uid/euid: 0/0 Apr 11 07:43:36 kernel: CPU: 1 PID: 11700 Comm: pacman Not tainted 4.4.6.201604021734-1-grsec #1 Apr 11 07:43:36 kernel: Hardware name: LENOVO, BIOS 1.08 03/09/2016 Apr 11 07:43:36 kernel: task: ffff880524c28a80 ti: ffff880524c294a8 task.ti: ffff880524c294a8 Apr 11 07:43:36 kernel: RIP: 0010:[<ffffffffc02d66b3>] [<ffffffffc02d66b3>] btrfs_qgroup_reserve_meta+0x73/0x90 [btrfs] Apr 11 07:43:36 kernel: RSP: 0018:ffffc9000d6e3a90 EFLAGS: 00000a06 Apr 11 07:43:36 kernel: RAX: 0000000000000000 RBX: ffff8804fecc5050 RCX: 0000000000000000 Apr 11 07:43:36 kernel: RDX: ffff880524e708c8 RSI: ffffc9000d6e3a48 RDI: ffff880524c12d70 Apr 11 07:43:36 kernel: RBP: ffffc9000d6e3aa0 R08: 0000000000000000 R09: ffff88036cf5d048 Apr 11 07:43:36 kernel: R10: ffff8803739a0410 R11: 0000000000000000 R12: 0000000000014000 Apr 11 07:43:36 kernel: R13: ffff8804fecc5050 R14: 0000000000000005 R15: 0000000000014000 Apr 11 07:43:36 kernel: FS: 000003f0e634c740(0000) GS:ffff880541440000(0000) knlGS:0000000000000000 Apr 11 07:43:36 kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Apr 11 07:43:36 kernel: CR2: 000000000074a6a8 CR3: 000000000660c000 CR4: 00000000003606f0 Apr 11 07:43:36 kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 Apr 11 07:43:36 kernel: DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Apr 11 07:43:36 kernel: Stack: Apr 11 07:43:36 kernel: 0000000000000002 0000000000000201 ffffc9000d6e3af8 ffffffffc025ab06 Apr 11 07:43:36 kernel: ffffffff861be853 ffffffffffff4111 ffff880373ccfa00 ffff8805250d0620 Apr 11 07:43:36 kernel: ffff8804fecc5050 0000000000000005 ffff880448a4db88 0000000000000001 Apr 11 07:43:36 kernel: Call Trace: Apr 11 07:43:36 kernel: [<ffffffffc025ab06>] start_transaction+0x346/0x430 [btrfs] Apr 11 07:43:36 kernel: [<ffffffff861be853>] ? lookup_fast+0x53/0x350 Apr 11 07:43:36 kernel: [<ffffffffc025ac12>] btrfs_start_transaction+0x22/0x30 [btrfs] Apr 11 07:43:36 kernel: [<ffffffffc026df26>] btrfs_create+0x46/0x250 [btrfs] Apr 11 07:43:36 kernel: [<ffffffff861bcacc>] ? __inode_permission+0x3c/0xc0 Apr 11 07:43:36 kernel: [<ffffffff861bfe05>] vfs_create+0xa5/0xe0 Apr 11 07:43:36 kernel: [<ffffffff861c1203>] path_openat+0x13c3/0x1400 Apr 11 07:43:36 kernel: [<ffffffff861c29b6>] do_filp_open+0xb6/0x130 Apr 11 07:43:36 kernel: [<ffffffff861ad931>] do_sys_open+0x151/0x230 Apr 11 07:43:36 kernel: [<ffffffff861ada38>] SyS_open+0x28/0x40 Apr 11 07:43:36 kernel: [<ffffffff865fbf70>] entry_SYSCALL_64_fastpath+0x12/0x86 Apr 11 07:43:36 kernel: [<ffffffff865fbfa3>] ? entry_SYSCALL_64_fastpath+0x45/0x86 Apr 11 07:43:36 kernel: [<ffffffff865fbfa3>] ? entry_SYSCALL_64_fastpath+0x45/0x86 Apr 11 07:43:36 kernel: Code: 44 21 e0 41 39 c4 75 32 49 63 f4 48 89 df e8 b5 cb ff ff 85 c0 78 18 f0 44 01 a3 fc 04 00 00 71 0a f0 44 29 a3 fc 04 00 00 cd 04 <eb> 02 31 c0 5b 41 5c 5d 48 0f ba 2c 24 3f c3 A Best Regards, Tobias -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
