Hi folks, Recently I received a bug report from Intel developers (big thanks), the kernel panic is caused by a kernel stack overflow and it seems from a recursive dm-table reload. Here is the simplified process to reproduce the panic, I use three 960GB name SSDs. 1, create 2 dm devices, # echo '0 181065567 linear /dev/nvme2n1 0' | dmsetup create nvme2n1bbm # echo '0 196616709 linear /dev/nvme3n1 0' | dmsetup create nvm3n1bbm 2, create a raid with these dm devices and another nvme SSD, # mdadm -C /dev/md0 -l 5 -n 3 /dev/nvme4n1 /dev/dm-0 /dev/dm-1 3, wait for resync to finish 4, stop the md array # mdadm —manage —stop /dev/md0 5, reload dm table for dm-0 # cat dm-table-reload | dmsetup reload /dev/dm-0 And the content of dm-table-reload is, 0 1 linear /dev/dm-0 0 1 181065566 linear /dev/dm-0 1 6, suspend and resume dm-0 # dmsetup suspend /dev/dm-0 # dmsetup resume /dev/dm-0 The panic can be reproduced in Linux-v5.3 kernel[1], and it changes to silent deadlock after minutes in Linux v6.0-rc2. So the problem should still exist in upstream kernel. My question are, 1) Does anyone observe or encounter such panic or deadlock before? 2) To permit recursive dm-table reload, is it a bug or just as-designed ? Thanks in advance. Coly Li [1] The kernel panic on Linux v5.3, [ 3974.375341] BUG: stack guard page was hit at 0000000094b9add1 (stack is 000000002345b2aa..000000001e32dd11) [ 3974.375361] kernel stack overflow (double-fault): 0000 [#1] SMP NOPTI [ 3974.375371] CPU: 51 PID: 3341 Comm: dmsetup Kdump: loaded Not tainted 5.3.18-57-default #1 SLE15-SP3 [ 3974.375377] Hardware name: Lenovo ThinkSystem SR650 V2 MB/7Z72A001WW, BIOS AFE117C-1.30 02/16/2022 [ 3974.375402] RIP: 0010:device_supports_dax+0x5/0x50 [dm_mod] [ 3974.375410] Code: 5b 5d 41 5c 41 5d c3 49 8b 44 24 08 48 89 45 00 b8 ea ff ff ff eb d5 e8 b9 87 94 d9 66 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 <41> 56 41 55 49 89 ce 41 54 55 49 89 d5 53 48 89 f3 45 8b 20 e8 72 [ 3974.375420] RSP: 0018:ff3e70cdc3b24000 EFLAGS: 00010246 [ 3974.375427] RAX: ff32363be08f7580 RBX: 0000000000000000 RCX: 0000000000000001 [ 3974.375432] RDX: 0000000000000000 RSI: ff32363bd598d258 RDI: ff3e70cdc343f040 [ 3974.375437] RBP: ffffffffc0353a90 R08: ff3e70cdc3b24034 R09: ffffffffc0353a90 [ 3974.375441] R10: 0000000000000001 R11: 0000000000000002 R12: ff3e70cdc3b24034 [ 3974.375446] R13: ff32363bdd7cfe00 R14: 0000000000000001 R15: ff32363bdd7cfee0 [ 3974.375452] FS: 00007f346aa31240(0000) GS:ff32363bff9c0000(0000) knlGS:0000000000000000 [ 3974.375458] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3974.375463] CR2: ff3e70cdc3b23ff8 CR3: 000000080b482004 CR4: 0000000000771ee0 [ 3974.375468] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 3974.375473] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 3974.375477] PKRU: 55555554 [ 3974.375481] Call Trace: [ 3974.375502] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.375520] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.375536] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.375551] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.375565] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.375579] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.375593] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.375606] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.375619] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.375632] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.375645] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.375658] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.375670] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.375683] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.375695] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.375707] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.375719] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.375731] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.375743] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.375755] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.375767] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.375779] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.375791] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.375802] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.375814] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.375827] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.375839] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.375851] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.375862] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.375875] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.375887] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.375898] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.375910] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.375922] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.375934] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.375946] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.375957] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.375969] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.375981] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.375993] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.376005] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.376017] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.376029] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.376040] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.376052] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.376064] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.376076] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.376088] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.376099] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.376111] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.376123] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.376135] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.376146] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.376158] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.376170] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.376181] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.376193] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.376205] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.376217] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.376228] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.376240] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.376252] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.376264] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.376275] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.376287] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.376299] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.376311] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.376322] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.376334] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.376345] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.376357] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.376369] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.376380] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.376392] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.376404] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.376415] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.376427] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.376438] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.376451] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.376462] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.376474] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.376485] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.376498] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.376509] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.376521] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.376533] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.376545] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.376556] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.376568] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.376579] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.376591] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.376603] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.376615] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.376626] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.376638] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.376649] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.376661] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.376673] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.376685] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.376696] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.376708] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.376719] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.376731] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.376743] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.376755] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.376766] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.376778] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.376790] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.376802] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.376814] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.376826] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.376838] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.376849] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.376861] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.376873] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.376885] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.376896] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.376908] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.376920] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.376932] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.376944] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.376957] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.376968] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.376980] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.376992] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.377003] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.377015] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.377027] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.377038] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.377050] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.377062] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.377073] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.377085] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.377096] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.377108] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.377120] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.377131] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.377143] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.377155] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.377166] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.377178] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.377189] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.377201] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.377213] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.377224] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.377236] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.377248] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.377260] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.377272] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.377283] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.377295] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.377307] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.377318] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.377330] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.377342] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.377354] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.377365] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.377377] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.377389] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.377401] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.377412] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.377424] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.377436] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.377448] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.377459] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.377471] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.377483] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.377495] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.377506] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.377518] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.377530] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.377542] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.377553] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.377565] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.377577] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.377588] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.377600] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.377612] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.377624] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.377635] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.377647] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.377659] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.377671] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.377682] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.377694] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.377705] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.377717] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.377729] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.377740] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.377752] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.377765] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.377778] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.377790] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.377802] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.377815] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.377828] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.377840] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.377852] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.377865] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.377877] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.377890] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.377902] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.377915] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.377927] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.377939] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.377952] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.377964] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.377977] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.377989] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.378002] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.378014] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.378027] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.378039] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.378051] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.378064] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.378076] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.378089] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.378101] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.378114] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.378126] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.378139] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.378151] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.378164] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.378176] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.378188] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.378201] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.378214] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.378226] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.378238] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.378251] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.378264] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.378276] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.378288] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.378301] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.378313] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.378326] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.378338] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.378351] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.378363] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.378376] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.378388] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.378401] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.378413] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.378426] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.378438] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.378451] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.378463] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.378476] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.378488] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.378501] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.378514] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.378526] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.378538] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.378551] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.378563] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.378576] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.378588] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.378601] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.378614] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.378626] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.378638] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.378651] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.378664] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.378676] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.378688] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.378701] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.378714] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.378726] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.378738] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.378751] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.378764] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.378776] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.378788] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.378801] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.378813] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.378826] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.378838] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.378851] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.378863] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.378875] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.378888] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.378900] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.378913] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.378925] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.378938] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.378950] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.378963] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.378975] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.378987] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.379000] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.379012] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.379025] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.379037] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.379050] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.379062] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.379075] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.379087] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.379100] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.379112] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.379125] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.379137] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.379150] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.379163] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.379175] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.379187] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.379200] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.379212] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.379225] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.379237] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.379250] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.379263] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.379275] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.379287] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.379300] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.379312] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.379325] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.379337] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.379350] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.379362] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.379375] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.379387] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.379399] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.379412] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.379424] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.379436] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.379449] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.379461] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.379474] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.379486] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.379499] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.379511] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.379524] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.379536] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.379549] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.379561] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.379574] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.379586] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.379599] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.379611] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.379623] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.379636] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.379648] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.379661] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.379673] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.379685] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.379698] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.379710] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.379723] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.379735] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.379748] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.379760] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.379773] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.379785] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.379798] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.379810] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.379823] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.379835] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.379847] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.379860] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.379872] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.379884] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.379897] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.379909] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.379922] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.379934] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.379947] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.379959] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.379972] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.379984] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.379996] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.380009] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.380022] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.380034] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.380047] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.380059] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.380071] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.380084] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.380096] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.380109] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.380121] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.380134] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.380146] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.380159] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.380171] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.380184] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.380196] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.380209] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.380222] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.380234] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.380247] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.380259] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.380271] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.380284] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.380296] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.380309] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.380321] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.380333] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.380346] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.380359] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.380371] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.380383] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.380396] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.380409] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.380421] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.380434] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.380446] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.380459] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.380471] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.380483] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.380496] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.380509] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.380521] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.380533] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.380546] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.380558] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.380571] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.380583] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.380595] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.380608] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.380620] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.380633] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.380645] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.380658] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.380670] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.380682] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.380695] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.380708] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.380720] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.380732] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.380745] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.380758] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.380770] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.380782] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.380795] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.380807] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.380820] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.380832] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.380845] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.380857] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.380870] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.380882] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.380895] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.380907] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.380919] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.380932] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.380944] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.380957] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.380969] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.380982] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.380994] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.381007] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.381017] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.381027] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.381037] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.381047] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.381057] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.381066] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.381076] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.381086] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.381096] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.381106] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.381116] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.381126] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.381136] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.381146] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.381156] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.381166] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.381176] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.381186] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.381196] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.381206] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.381216] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.381226] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.381236] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.381246] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.381256] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.381266] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.381276] dm_dax_supported+0x48/0x70 [dm_mod] [ 3974.381286] device_supports_dax+0x35/0x50 [dm_mod] [ 3974.381296] ? dm_read_arg_group+0xb0/0xb0 [dm_mod] [ 3974.381306] dm_table_supports_dax+0x8d/0xb0 [dm_mod] [ 3974.381317] ? device_not_discard_capable+0x30/0x30 [dm_mod] [ 3974.381329] dm_table_set_restrictions+0x22f/0x6e0 [dm_mod] [ 3974.381343] dm_swap_table+0x20d/0x330 [dm_mod] [ 3974.381356] ? table_load+0x360/0x360 [dm_mod] [ 3974.381368] dev_suspend+0x95/0x2a0 [dm_mod] [ 3974.381379] ctl_ioctl+0x1bc/0x4c0 [dm_mod] [ 3974.381393] dm_ctl_ioctl+0xa/0x10 [dm_mod] [ 3974.381406] ksys_ioctl+0x92/0xb0 [ 3974.381416] ? ksys_semtimedop+0x74/0x80 [ 3974.381423] __x64_sys_ioctl+0x16/0x20 [ 3974.381432] do_syscall_64+0x5b/0x1e0 [ 3974.381443] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 3974.381450] RIP: 0033:0x7f346a2e3807 [ 3974.381455] Code: b3 66 90 48 8b 05 89 76 2d 00 64 c7 00 26 00 00 00 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 b8 10 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 59 76 2d 00 f7 d8 64 89 01 48 [ 3974.381464] RSP: 002b:00007ffc7bde4e08 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 3974.381470] RAX: ffffffffffffffda RBX: 00007f346a5cffb0 RCX: 00007f346a2e3807 [ 3974.381474] RDX: 0000565428352b30 RSI: 00000000c138fd06 RDI: 0000000000000003 [ 3974.381479] RBP: 00007f346a60a113 R08: 00007f346a60aca0 R09: 00007ffc7bde4c70 [ 3974.381483] R10: 00007f346a60a113 R11: 0000000000000246 R12: 0000000000000001 [ 3974.381488] R13: 0000565428352b60 R14: 0000565428352b30 R15: 0000565428352930 [ 3974.381494] Modules linked in: raid456 async_raid6_recov async_memcpy async_pq async_xor async_tx af_packet iscsi_ibft iscsi_boot_sysfs rfkill intel_rapl_msr intel_rapl_common i10nm_edac nfit libnvdimm x86_pkg_temp_thermal intel_powerclamp coretemp nls_iso8859_1 iTCO_wdt intel_pmc_bxt kvm_intel nls_cp437 iTCO_vendor_support vfat fat kvm ipmi_ssif xfs irqbypass crc32_pclmul mgag200 i2c_algo_bit drm_kms_helper ghash_clmulni_intel aesni_intel cec cdc_ether rc_core usbnet ioatdma mei_me crypto_simd syscopyarea sysfillrect cryptd isst_if_mbox_pci isst_if_mmio pcspkr bnxt_en joydev sysimgblt glue_helper isst_if_common mii fb_sys_fops i2c_i801 dca intel_pmt mei ipmi_si ipmi_devintf ipmi_msghandler acpi_pad button drm fuse configfs btrfs libcrc32c xor hid_generic usbhid sd_mod raid6_pq raid1 md_mod nvme nvme_core xhci_pci t10_pi xhci_hcd ahci libahci usbcore libata crc32c_intel vmd wmi sg dm_multipath dm_mod scsi_dh_rdac scsi_dh_emc scsi_dh_alua scsi_mod efivarfs [ 3974.381589] Supported: Yes -- dm-devel mailing list dm-devel@xxxxxxxxxx https://listman.redhat.com/mailman/listinfo/dm-devel
