On Wed, Sep 7, 2016 at 12:22 PM, John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> wrote: > Hello! > > After kernel 4.7.2 entered Debian unstable, I decided to upgrade the buildds and ran into an > apparent regression with the 4.7.x kernels on sun4u machines: It's not only with sun4u, we're getting kernel OOPS on sun4v as well: landau login: [860301.509777] \|/ ____ \|/ [860301.509777] "@'/ .. \`@" [860301.509777] /_| \__/ |_\ [860301.509777] \__U_/ [860301.509801] systemd-journal(1059): Kernel illegal instruction [#1] [860301.509807] \|/ ____ \|/ [860301.509807] "@'/ .. \`@" [860301.509807] /_| \__/ |_\ [860301.509807] \__U_/ [860301.509814] CPU: 88 PID: 1059 Comm: systemd-journal Not tainted 4.7.0-1-sparc64-smp #1 Debian 4.7.2-1 [860301.509817] task: fff800201eb3a4c0 ti: fff800201e83c000 task.ti: fff800201e83c000 [860301.509819] TSTATE: 0000004411001600 TPC: 00000000005c27dc TNPC: 00000000005c27e0 Y: 00000004 Not tainted [860301.509830] TPC: <__kmalloc_track_caller+0x13c/0x200> [860301.509832] g0: 0000000231c55926 g1: 0000000000400000 g2: 0000000000000000 g3: 00000000c0000000 [860301.509834] g4: fff800201eb3a4c0 g5: fff800207cae6000 g6: fff800201e83c000 g7: 0000000000006700 [860301.509837] o0: 0000000000000000 o1: 0000000003ffffff o2: fff800201e83fd98 o3: 0000000000004040 [860301.509838] o4: 0000000000000000 o5: fff800201e83fbb8 sp: fff800201e83edb1 ret_pc: 00000000005c27d4 [860301.509841] RPC: <__kmalloc_track_caller+0x134/0x200> [860301.509843] l0: 0000000000000000 l1: fff80000804024a0 l2: 0000000000000000 l3: 0000000000000000 [860301.509845] l4: 0000000000000000 l5: 0000000000000000 l6: 0000000000000000 l7: fff80001009fc000 [860301.509847] i0: fff80000804024a0 i1: 00000000024106c0 i2: 000000000085333c i3: 00000000024106c0 [860301.509849] i4: 00000000000001c0 i5: 00000000024106c0 i6: fff800201e83ee61 i7: 0000000000853280 [860301.509855] I7: <__kmalloc_reserve.isra.5+0x20/0x80> [860301.509856] Call Trace: [860301.509859] [0000000000853280] __kmalloc_reserve.isra.5+0x20/0x80 [860301.509861] [000000000085333c] __alloc_skb+0x5c/0x180 [860301.509864] [00000000008534a4] alloc_skb_with_frags+0x44/0x1e0 [860301.509873] [000000000084ddcc] sock_alloc_send_pskb+0x1ec/0x220 [860301.509883] [00000000009219cc] unix_dgram_sendmsg+0x12c/0x600 [860301.509887] [00000000008485dc] sock_sendmsg+0x3c/0x80 [860301.509890] [0000000000849010] ___sys_sendmsg+0x250/0x260 [860301.509893] [0000000000849f94] __sys_sendmsg+0x34/0x80 [860301.509895] [000000000084a000] SyS_sendmsg+0x20/0x40 [860301.509904] [00000000004061f4] linux_sparc_syscall+0x34/0x44 [860301.509906] Disabling lock debugging due to kernel taint full boot log in attachment as well.
Attachment:
sun4v-4.7.2-boot.log.gz
Description: GNU Zip compressed data