Hi there, me again Kernel is at 043f0b67f2ab8d1af418056bc0cc6f0623d31347 This test is easier to explain: it essentially issues a connect and a shutdown right away. It currently fails due to no fault of io_uring. But every now and then it crashes (you may have to run more than once to get it to crash) Instructions are similar to my last test. Except the test to build is now "tests/unit/connect_test" Code is at git@xxxxxxxxxx:glommer/seastar.git branch io-uring-connect-crash Run it with ./build/release/tests/unit/connect_test -- -c1 --reactor-backend=uring Backtrace attached
[ 732.030514] BUG: unable to handle page fault for address: 0000000000002008 [ 732.030666] #PF: supervisor write access in kernel mode [ 732.030807] #PF: error_code(0x0002) - not-present page [ 732.030946] PGD 8000000fe304d067 P4D 8000000fe304d067 PUD fe4745067 PMD 0 [ 732.031131] Oops: 0002 [#1] SMP PTI [ 732.031355] CPU: 0 PID: 1656 Comm: connect_test Not tainted 5.6.0-rc1+ #39 [ 732.031583] Hardware name: ASUS All Series/X99-A, BIOS 3402 08/18/2016 [ 732.031817] RIP: 0010:__io_queue_sqe+0x4ac/0x4f0 [ 732.032044] Code: 13 4d 85 d2 75 d8 4c 8b 64 24 18 4c 8b 7c 24 08 e9 c3 fe ff ff 48 8b 43 60 48 85 c0 74 20 48 8b 53 58 48 89 10 48 85 d2 74 04 <48> 89 42 08 48 c7 43 58 00 00 00 00 48 c7 43 60 00 00 00 00 48 8b [ 732.032300] RSP: 0018:ffffb9eec11c7d20 EFLAGS: 00010006 [ 732.032564] RAX: ffffe62e7e5b9700 RBX: ffff99966ee25700 RCX: dead000000000122 [ 732.032817] RDX: 0000000000002000 RSI: ffff999676b10580 RDI: ffff999676b105b0 [ 732.033067] RBP: ffffb9eec11c7db0 R08: ffff99966c3ce848 R09: ffff99966ee25700 [ 732.033319] R10: ffffffffa0e639a0 R11: ffff99966ee257a8 R12: 0000000000000000 [ 732.033572] R13: ffff999676b105c0 R14: fffffffffffffff5 R15: ffff999663058040 [ 732.033827] FS: 00007ffff2897700(0000) GS:ffff99967fa00000(0000) knlGS:0000000000000000 [ 732.034080] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 732.034334] CR2: 0000000000002008 CR3: 0000000fe20f6005 CR4: 00000000001606f0 [ 732.034596] Call Trace: [ 732.034853] ? io_poll_queue_proc+0x30/0x30 [ 732.035112] ? kmem_cache_alloc+0x1a4/0x230 [ 732.035355] io_submit_sqes+0x772/0xad0 [ 732.035614] ? __wake_up_common_lock+0x87/0xc0 [ 732.035857] ? sock_has_perm+0x80/0xa0 [ 732.036107] __x64_sys_io_uring_enter+0x253/0x350 [ 732.036364] do_syscall_64+0x5b/0x190 [ 732.036615] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 732.036870] RIP: 0033:0x7ffff5b6dc4d [ 732.037125] Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 0b 72 0c 00 f7 d8 64 89 01 48 [ 732.037525] RSP: 002b:00007ffff28930b8 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa [ 732.037805] RAX: ffffffffffffffda RBX: 0000000000000011 RCX: 00007ffff5b6dc4d [ 732.038083] RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000007 [ 732.038364] RBP: 00007ffff2893120 R08: 0000000000000000 R09: 0000000000000008 [ 732.038647] R10: 0000000000000000 R11: 0000000000000246 R12: 00006160000117e0 [ 732.038928] R13: 00007ffff2893260 R14: 00000000013cd408 R15: 000060200002aa10 [ 732.039213] Modules linked in: iptable_mangle xt_CHECKSUM iptable_nat xt_MASQUERADE nf_nat xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ipt_REJECT nf_reject_ipv4 tun bridge stp llc ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter ip_tables xfs libcrc32c snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio snd_hda_codec_hdmi snd_hda_intel snd_intel_dspcfg intel_rapl_msr intel_rapl_common x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm snd_hda_codec irqbypass snd_hwdep snd_hda_core crct10dif_pclmul crc32_pclmul snd_seq ghash_clmulni_intel intel_cstate snd_seq_device eeepc_wmi intel_uncore snd_pcm asus_wmi wmi_bmof iTCO_wdt pcspkr intel_rapl_perf sparse_keymap rfkill snd_timer i2c_i801 iTCO_vendor_support mei_me snd mei intel_wmi_thunderbolt lpc_ich soundcore nouveau video i2c_algo_bit drm_kms_helper cec ttm drm e1000e mxm_wmi nvme crc32c_intel nvme_core wmi fuse [ 732.040520] CR2: 0000000000002008 [ 732.040873] ---[ end trace ad0acf94c0df32bf ]--- [ 732.041226] RIP: 0010:__io_queue_sqe+0x4ac/0x4f0 [ 732.041579] Code: 13 4d 85 d2 75 d8 4c 8b 64 24 18 4c 8b 7c 24 08 e9 c3 fe ff ff 48 8b 43 60 48 85 c0 74 20 48 8b 53 58 48 89 10 48 85 d2 74 04 <48> 89 42 08 48 c7 43 58 00 00 00 00 48 c7 43 60 00 00 00 00 48 8b [ 732.041965] RSP: 0018:ffffb9eec11c7d20 EFLAGS: 00010006 [ 732.042343] RAX: ffffe62e7e5b9700 RBX: ffff99966ee25700 RCX: dead000000000122 [ 732.042720] RDX: 0000000000002000 RSI: ffff999676b10580 RDI: ffff999676b105b0 [ 732.043102] RBP: ffffb9eec11c7db0 R08: ffff99966c3ce848 R09: ffff99966ee25700 [ 732.043483] R10: ffffffffa0e639a0 R11: ffff99966ee257a8 R12: 0000000000000000 [ 732.043865] R13: ffff999676b105c0 R14: fffffffffffffff5 R15: ffff999663058040 [ 732.044246] FS: 00007ffff2897700(0000) GS:ffff99967fa00000(0000) knlGS:0000000000000000 [ 732.044627] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 732.045010] CR2: 0000000000002008 CR3: 0000000fe20f6005 CR4: 00000000001606f0
