Saw this at boot of next-20170620. Not sure how I managed to hit 4 BUG in a row... Looked in 'git log -- mm/' but not seeing anything blatantly obvious. This ringing any bells? I'm not in a position to recreate or bisect this until the weekend. [ 315.409076] BUG: Bad rss-counter state mm:ffff8a223deb4640 idx:0 val:-512 [ 315.412889] BUG: Bad rss-counter state mm:ffff8a223deb4640 idx:1 val:512 [ 315.416694] BUG: non-zero nr_ptes on freeing mm: 1 [ 315.436098] BUG: Bad page state in process gdm pfn:3e8400 [ 315.439802] page:ffffe8af0fa10000 count:-1 mapcount:0 mapping: (null) index:0x1 [ 315.443264] flags: 0x4000000000000000() [ 315.446715] raw: 4000000000000000 0000000000000000 0000000000000001 ffffffffffffffff [ 315.450181] raw: dead000000000100 dead000000000200 0000000000000000 0000000000000000 [ 315.453628] page dumped because: nonzero _count [ 315.457023] Modules linked in: ts_bm nf_log_ipv4 xt_string nf_log_ipv6 nf_log_common xt_LOG sunrpc vfat fat brcmsmac cordic brcmutil dell _wmi x86_pkg_temp_thermal crct10dif_pclmul dell_laptop crc32_pclmul crc32c_intel dell_smbios ghash_clmulni_intel dell_smm_hwmon cryptd bcma mei_wdt dell_smo8800 dell_rbtn sch_fq tcp_bbr [ 315.457116] CPU: 3 PID: 6684 Comm: gdm Not tainted 4.12.0-rc6-next-20170620 #506 [ 315.457119] Hardware name: Dell Inc. Latitude E6530/07Y85M, BIOS A19 01/04/2017 [ 315.457122] Call Trace: [ 315.457131] dump_stack+0x83/0xd1 [ 315.457141] bad_page+0x10c/0x1b0 [ 315.457151] check_new_page_bad+0x12e/0x180 [ 315.457159] get_page_from_freelist+0x756/0x1840 [ 315.457170] ? native_sched_clock+0x80/0xf0 [ 315.457184] ? find_held_lock+0x38/0x160 [ 315.457194] __alloc_pages_nodemask+0x145/0x5a0 [ 315.457211] do_huge_pmd_wp_page+0x58d/0x1380 [ 315.457217] ? cyc2ns_read_begin+0x82/0xb0 [ 315.457224] ? cyc2ns_read_end+0x22/0x40 [ 315.457229] ? native_sched_clock+0x80/0xf0 [ 315.457236] ? native_sched_clock+0x80/0xf0 [ 315.457247] __handle_mm_fault+0x831/0x14e0 [ 315.457253] ? sched_clock_cpu+0x1b/0x1e0 [ 315.457273] handle_mm_fault+0x23c/0x6f0 [ 315.457283] __do_page_fault+0x460/0x950 [ 315.457298] do_page_fault+0xc/0x10 [ 315.457305] page_fault+0x22/0x30 [ 315.457310] RIP: 0033:0x7fe15390e5c1 [ 315.457314] RSP: 002b:00007ffd2acdca30 EFLAGS: 00010202 [ 315.457320] RAX: 0000000000000000 RBX: 00007ffd2acdca50 RCX: 0000000000000000 [ 315.457324] RDX: 0000000000801000 RSI: 00007fe14bfff9c0 RDI: 00007fe14b7fec10 [ 315.457328] RBP: 00007ffd2acdcac0 R08: 00007fe14b7fed10 R09: 00007fe153b22030 [ 315.457331] R10: 00007fe155346900 R11: 0000000000000202 R12: 0000000000000000 [ 315.457335] R13: 0000000000000000 R14: 0000000000000001 R15: 00007fe155413000 [ 315.457354] Disabling lock debugging due to kernel taint
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