https://bugzilla.kernel.org/show_bug.cgi?id=201631 --- Comment #66 from erhard_f@xxxxxxxxxxx --- Currently I am testing this, the 2 patches from Aneesh applied and the one from Jan. So far I was not able to provoke the original bug. I faced however another one, don't know wether it's related: [...] Feb 04 23:11:43 T1000 kernel: BUG: Kernel NULL pointer dereference at 0x00000028 Feb 04 23:11:43 T1000 kernel: Faulting instruction address: 0xc0000000002a20ac Feb 04 23:11:43 T1000 kernel: Oops: Kernel access of bad area, sig: 11 [#1] Feb 04 23:11:43 T1000 kernel: BE SMP NR_CPUS=192 NUMA PowerNV Feb 04 23:11:43 T1000 kernel: Modules linked in: rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace sunrpc sr_mod cdrom cfg80211 rfkill evdev radeon ghash_generic gf128mul ecb xts snd_hda_codec_hdmi> Feb 04 23:11:43 T1000 kernel: CPU: 0 PID: 218 Comm: kswapd0 Not tainted 5.0.0-rc4 #2 Feb 04 23:11:43 T1000 kernel: NIP: c0000000002a20ac LR: c0000000002a209c CTR: c0000000002bd280 Feb 04 23:11:43 T1000 kernel: REGS: c0000007f8c76fa0 TRAP: 0300 Not tainted (5.0.0-rc4) Feb 04 23:11:43 T1000 kernel: MSR: 900000000280b032 <SF,HV,VEC,VSX,EE,FP,ME,IR,DR,RI> CR: 44222288 XER: 00000000 Feb 04 23:11:43 T1000 kernel: CFAR: c000000000281724 DAR: 0000000000000028 DSISR: 40000000 IRQMASK: 0 GPR00: c0000000002a5a48 c0000007f8c77230 c0000000011e2a00 c0000007e2cb8000 GPR04: c000000000bebb70 00003fff92170000 0000000000000040 c0000007f4f9e600 GPR08: c0000000011f54d8 0000000000000000 0000000000000000 0000000000000000 GPR12: 0000000024222282 c000000001e2b000 c0000007e2cb8000 0000000000000000 GPR16: 0000000000000001 c00a00001ed74ac0 c0000007f8c77798 0000000000000000 GPR20: c00a00001ed74ac8 5deadbeef0000100 0000000020000000 c0000007f4f9e718 GPR24: c0000007f4f9ea40 7c00000000000000 7800000000000000 c0000007f4f9ea38 GPR28: c0000007f4f9e600 c0000007d18cfa90 c00a00001ed74ac0 c00a00001ed74ac0 Feb 04 23:11:43 T1000 kernel: NIP [c0000000002a20ac] .is_ext4_page+0x3c/0x4b0 Feb 04 23:11:43 T1000 kernel: LR [c0000000002a209c] .is_ext4_page+0x2c/0x4b0 Feb 04 23:11:43 T1000 kernel: Call Trace: Feb 04 23:11:43 T1000 kernel: [c0000007f8c77230] [c0000007f9d0d880] 0xc0000007f9d0d880 (unreliable) Feb 04 23:11:43 T1000 kernel: [c0000007f8c772b0] [c0000000002a5a48] .get_ext4_bh_nowarn+0x18/0x80 Feb 04 23:11:43 T1000 kernel: [c0000007f8c77330] [c0000000002b963c] .page_vma_mapped_walk+0x3c/0x9d0 Feb 04 23:11:43 T1000 kernel: [c0000007f8c77410] [c0000000002bd3d8] .try_to_unmap_one+0x158/0x950 Feb 04 23:11:43 T1000 kernel: [c0000007f8c77560] [c0000000002bc018] .rmap_walk_anon+0x148/0x3a0 Feb 04 23:11:43 T1000 kernel: [c0000007f8c77610] [c0000000002bf364] .try_to_unmap+0x104/0x160 Feb 04 23:11:43 T1000 kernel: [c0000007f8c776c0] [c000000000270958] .shrink_page_list+0x738/0x11e0 Feb 04 23:11:43 T1000 kernel: [c0000007f8c77840] [c000000000271f7c] .shrink_inactive_list+0x34c/0x7f0 Feb 04 23:11:43 T1000 kernel: [c0000007f8c77950] [c000000000272e94] .shrink_node_memcg+0x3c4/0x7e0 Feb 04 23:11:43 T1000 kernel: [c0000007f8c77ab0] [c0000000002733c4] .shrink_node+0x114/0x670 Feb 04 23:11:43 T1000 kernel: [c0000007f8c77bd0] [c000000000275158] .kswapd+0x3f8/0xc30 Feb 04 23:11:43 T1000 kernel: [c0000007f8c77d60] [c0000000000dfb6c] .kthread+0x19c/0x1b0 Feb 04 23:11:43 T1000 kernel: [c0000007f8c77e20] [c00000000000b790] .ret_from_kernel_thread+0x58/0x68 Feb 04 23:11:43 T1000 kernel: Instruction dump: Feb 04 23:11:43 T1000 kernel: f8010010 f821ff81 4bfdf62d 60000000 2fa30000 419e0150 7fe3fb78 4bfdf619 Feb 04 23:11:43 T1000 kernel: 60000000 3c82ffa1 e9230000 38849170 <e9290028> e9290028 e8690000 78690520 Feb 04 23:11:43 T1000 kernel: ---[ end trace 9d98850d9aa63397 ]--- [...] -- You are receiving this mail because: You are watching the assignee of the bug.
