I am seeing the following soft lockup on multiple Ultrasparc II era sparc machines - Ultra 2, Netra X1, Blade 100 at least. 4.9 was fine. Will attempt to bisect some time. The lockups are detected routinely (every 2-3 files when compiling new kernel) but the machine keeps running. CC added because of NMI changes - no idea if it is related. I have THP enabled and always on in most machines' kernel config. [503216.376072] NMI watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [khugepaged:153] [503216.470787] Modules linked in: ipv6 loop snd_sun_cs4231 snd_pcm snd_timer sr_mod sg evdev cdrom snd soundcore sunhme parport_sunbpp parport flash [503216.636654] CPU: 0 PID: 153 Comm: khugepaged Tainted: G L 4.10.0-11624-g0710f3f #162 [503216.747322] task: fffff8006c57e180 task.stack: fffff8006c5e0000 [503216.822501] TSTATE: 0000004480001607 TPC: 00000000007dfa68 TNPC: 00000000007dfa6c Y: 01ceecf2 Tainted: G L [503216.959282] TPC: <_raw_spin_unlock_irqrestore+0x8/0x20> [503217.026217] g0: 00000000007dfa68 g1: 0000400000000000 g2: 0000000000008000 g3: 000000006c014000 [503217.134716] g4: fffff8006c57e180 g5: fffff8006eef8000 g6: fffff8006c5e0000 g7: 0000000000000016 [503217.243359] o0: fffff8006cd2d6c0 o1: 0000000000000000 o2: 0000000000000000 o3: 0000000000000000 [503217.351857] o4: 000000007143c000 o5: fffff8006cd2d400 sp: fffff8006c5e3191 ret_pc: 0000000000442efc [503217.464434] RPC: <tlb_batch_add_one+0x5c/0x100> [503217.522754] l0: fffff8006eef8000 l1: 0000000000000002 l2: 00000000009160c0 l3: 000000000000000e [503217.631244] l4: 0000000000000001 l5: 0000000000000001 l6: fffff8006da38000 l7: 00000000000003ef [503217.739733] i0: fffff8006cd2d400 i1: 000000007143c000 i2: 0000000000000000 i3: 0000000000000000 [503217.848185] i4: fffff8006f8006e0 i5: 00000000009086e0 i6: fffff8006c5e3241 i7: 0000000000443230 [503217.956690] I7: <set_pmd_at+0x130/0x1a0> [503218.007747] Call Trace: [503218.040947] [0000000000443230] set_pmd_at+0x130/0x1a0 [503218.106503] [00000000005060f4] pmdp_collapse_flush+0x14/0x40 [503218.179404] [0000000000529f38] khugepaged_scan_pmd+0x3d8/0xac0 [503218.254370] [000000000052acd0] khugepaged+0x6b0/0xa80 [503218.319827] [0000000000470ef0] kthread+0xd0/0x120 [503218.381186] [0000000000406044] ret_from_fork+0x1c/0x2c [503218.447700] [0000000000000000] (null) -- Meelis Roos (mroos@xxxxxxxx) -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
