On May 07, 2025 / 20:04, Ming Lei wrote: > Hello Jens, > > The 1st patch fixes one hang in elevator_change(), which is introduced in > elevator unifying patchset. FYI, I faced a hang when I ran blktests on the linux-next kernel with the tag next-20250507. Kernel messages recorded the hang in elevator_change() [2], so I guess this is the hang Ming mentioned above. The hang was observed at the blktests test case block/027. - The hang is recreated in stable manner by repeating the test case a few times. - The hang is also observed using the kernel v6.15-rc5 with the "elevator unifying patchset" [1]. - The hang disappears applying this patch series. I repeated the test case 10 times, and the test case passed 10 times. [1] https://lore.kernel.org/linux-block/174653930720.1466231.1085005593717678595.b4-ty@xxxxxxxxx/T/#t [2] [ 2058.093128] [ T14410] run blktests block/027 at 2025-05-08 05:35:23 [ 2058.225948] [ T14462] sd 11:0:0:0: [sdg] Synchronizing SCSI cache [ 2058.407456] [ T14464] scsi_debug:sdebug_driver_probe: scsi_debug: trim poll_queues to 0. poll_q/nr_hw = (0/20) [ 2058.418343] [ T14464] scsi host11: scsi_debug: version 0191 [20210520] dev_size_mb=8, opts=0x0, submit_queues=20, statistics=0 [ 2058.453556] [ T14464] scsi 11:0:0:0: Direct-Access Linux scsi_debug 0191 PQ: 0 ANSI: 7 [ 2058.466059] [ T14464] scsi 11:0:0:0: Power-on or device reset occurred [ 2058.478338] [ T12862] sd 11:0:0:0: [sdg] 268435456 512-byte logical blocks: (137 GB/128 GiB) [ 2058.478978] [ T14464] sd 11:0:0:0: Attached scsi generic sg7 type 0 [ 2058.486785] [ T12862] sd 11:0:0:0: [sdg] Write Protect is off [ 2058.494912] [ T14464] scsi 11:0:0:1: Direct-Access Linux scsi_debug 0191 PQ: 0 ANSI: 7 [ 2058.498400] [ T12862] sd 11:0:0:0: [sdg] Mode Sense: 73 00 10 08 [ 2058.508638] [ T14464] scsi 11:0:0:1: Power-on or device reset occurred [ 2058.511441] [ T12862] sd 11:0:0:0: [sdg] Write cache: enabled, read cache: enabled, supports DPO and FUA [ 2058.517270] [ T14464] sd 11:0:0:1: Attached scsi generic sg8 type 0 [ 2058.517530] [ T13564] sd 11:0:0:1: [sdh] 268435456 512-byte logical blocks: (137 GB/128 GiB) [ 2058.517648] [ T13564] sd 11:0:0:1: [sdh] Write Protect is off [ 2058.517678] [ T13564] sd 11:0:0:1: [sdh] Mode Sense: 73 00 10 08 [ 2058.517841] [ T13564] sd 11:0:0:1: [sdh] Write cache: enabled, read cache: enabled, supports DPO and FUA [ 2058.518238] [ T13564] sd 11:0:0:1: [sdh] permanent stream count = 5 [ 2058.518361] [ T13564] sd 11:0:0:1: [sdh] Preferred minimum I/O size 512 bytes [ 2058.518376] [ T13564] sd 11:0:0:1: [sdh] Optimal transfer size 524288 bytes [ 2058.525268] [ T12862] sd 11:0:0:0: [sdg] permanent stream count = 5 [ 2058.532668] [ T14464] scsi 11:0:0:2: Direct-Access Linux scsi_debug 0191 PQ: 0 ANSI: 7 [ 2058.539401] [ T12862] sd 11:0:0:0: [sdg] Preferred minimum I/O size 512 bytes [ 2058.546074] [ T14464] scsi 11:0:0:2: Power-on or device reset occurred [ 2058.547978] [ T14464] sd 11:0:0:2: Attached scsi generic sg9 type 0 [ 2058.548835] [ T1363] sd 11:0:0:2: [sdi] 268435456 512-byte logical blocks: (137 GB/128 GiB) [ 2058.548980] [ T1363] sd 11:0:0:2: [sdi] Write Protect is off [ 2058.549011] [ T1363] sd 11:0:0:2: [sdi] Mode Sense: 73 00 10 08 [ 2058.549178] [ T1363] sd 11:0:0:2: [sdi] Write cache: enabled, read cache: enabled, supports DPO and FUA [ 2058.549607] [ T1363] sd 11:0:0:2: [sdi] permanent stream count = 5 [ 2058.549728] [ T1363] sd 11:0:0:2: [sdi] Preferred minimum I/O size 512 bytes [ 2058.549743] [ T1363] sd 11:0:0:2: [sdi] Optimal transfer size 524288 bytes [ 2058.555444] [ T12862] sd 11:0:0:0: [sdg] Optimal transfer size 524288 bytes [ 2058.563164] [ T14464] scsi 11:0:0:3: Direct-Access Linux scsi_debug 0191 PQ: 0 ANSI: 7 [ 2058.688094] [ T14464] scsi 11:0:0:3: Power-on or device reset occurred [ 2058.688137] [ T13564] sd 11:0:0:1: [sdh] Attached SCSI disk [ 2058.695209] [ T1363] sd 11:0:0:2: [sdi] Attached SCSI disk [ 2058.696189] [ T1364] sd 11:0:0:3: [sdj] 268435456 512-byte logical blocks: (137 GB/128 GiB) [ 2058.696247] [ T1364] sd 11:0:0:3: [sdj] Write Protect is off [ 2058.696262] [ T1364] sd 11:0:0:3: [sdj] Mode Sense: 73 00 10 08 [ 2058.696325] [ T14464] sd 11:0:0:3: Attached scsi generic sg10 type 0 [ 2058.696351] [ T1364] sd 11:0:0:3: [sdj] Write cache: enabled, read cache: enabled, supports DPO and FUA [ 2058.696577] [ T1364] sd 11:0:0:3: [sdj] permanent stream count = 5 [ 2058.696693] [ T1364] sd 11:0:0:3: [sdj] Preferred minimum I/O size 512 bytes [ 2058.696708] [ T1364] sd 11:0:0:3: [sdj] Optimal transfer size 524288 bytes [ 2058.699204] [ T14464] scsi 11:0:0:4: Direct-Access Linux scsi_debug 0191 PQ: 0 ANSI: 7 [ 2058.700288] [ T14464] scsi 11:0:0:4: Power-on or device reset occurred [ 2058.706172] [ T12862] sd 11:0:0:0: [sdg] Attached SCSI disk [ 2058.718223] [ T14464] sd 11:0:0:4: Attached scsi generic sg11 type 0 [ 2058.718718] [ T1363] sd 11:0:0:4: [sdk] 268435456 512-byte logical blocks: (137 GB/128 GiB) [ 2058.718836] [ T1363] sd 11:0:0:4: [sdk] Write Protect is off [ 2058.718887] [ T1363] sd 11:0:0:4: [sdk] Mode Sense: 73 00 10 08 [ 2058.719057] [ T1363] sd 11:0:0:4: [sdk] Write cache: enabled, read cache: enabled, supports DPO and FUA [ 2058.719490] [ T1363] sd 11:0:0:4: [sdk] permanent stream count = 5 [ 2058.722369] [ T14464] scsi 11:0:0:5: Direct-Access Linux scsi_debug 0191 PQ: 0 ANSI: 7 [ 2058.726442] [ T1363] sd 11:0:0:4: [sdk] Preferred minimum I/O size 512 bytes [ 2058.737127] [ T14464] scsi 11:0:0:5: Power-on or device reset occurred [ 2058.741779] [ T1363] sd 11:0:0:4: [sdk] Optimal transfer size 524288 bytes [ 2058.750466] [ T12862] sd 11:0:0:5: [sdl] 268435456 512-byte logical blocks: (137 GB/128 GiB) [ 2058.750984] [ T14464] sd 11:0:0:5: Attached scsi generic sg12 type 0 [ 2058.753126] [ T14464] scsi 11:0:0:6: Direct-Access Linux scsi_debug 0191 PQ: 0 ANSI: 7 [ 2058.754438] [ T14464] scsi 11:0:0:6: Power-on or device reset occurred [ 2058.757198] [ T14464] sd 11:0:0:6: Attached scsi generic sg13 type 0 [ 2058.757474] [ T13564] sd 11:0:0:6: [sdm] 268435456 512-byte logical blocks: (137 GB/128 GiB) [ 2058.757574] [ T13564] sd 11:0:0:6: [sdm] Write Protect is off [ 2058.757599] [ T13564] sd 11:0:0:6: [sdm] Mode Sense: 73 00 10 08 [ 2058.757737] [ T13564] sd 11:0:0:6: [sdm] Write cache: enabled, read cache: enabled, supports DPO and FUA [ 2058.760015] [ T13564] sd 11:0:0:6: [sdm] permanent stream count = 5 [ 2058.760173] [ T13564] sd 11:0:0:6: [sdm] Preferred minimum I/O size 512 bytes [ 2058.760188] [ T13564] sd 11:0:0:6: [sdm] Optimal transfer size 524288 bytes [ 2058.764451] [ T12862] sd 11:0:0:5: [sdl] Write Protect is off [ 2058.774374] [ T14464] scsi 11:0:0:7: Direct-Access Linux scsi_debug 0191 PQ: 0 ANSI: 7 [ 2058.776195] [ T12862] sd 11:0:0:5: [sdl] Mode Sense: 73 00 10 08 [ 2058.776270] [ T12862] sd 11:0:0:5: [sdl] Write cache: enabled, read cache: enabled, supports DPO and FUA [ 2058.784899] [ T14464] scsi 11:0:0:7: Power-on or device reset occurred [ 2058.790862] [ T12862] sd 11:0:0:5: [sdl] permanent stream count = 5 [ 2058.792322] [ T1364] sd 11:0:0:3: [sdj] Attached SCSI disk [ 2058.798540] [ T1364] sd 11:0:0:7: [sdn] 268435456 512-byte logical blocks: (137 GB/128 GiB) [ 2058.798697] [ T14464] sd 11:0:0:7: Attached scsi generic sg14 type 0 [ 2058.800961] [ T14464] scsi 11:0:0:8: Direct-Access Linux scsi_debug 0191 PQ: 0 ANSI: 7 [ 2058.802281] [ T14464] scsi 11:0:0:8: Power-on or device reset occurred [ 2058.804437] [ T1833] sd 11:0:0:8: [sdo] 268435456 512-byte logical blocks: (137 GB/128 GiB) [ 2058.804507] [ T1833] sd 11:0:0:8: [sdo] Write Protect is off [ 2058.804524] [ T1833] sd 11:0:0:8: [sdo] Mode Sense: 73 00 10 08 [ 2058.804536] [ T14464] sd 11:0:0:8: Attached scsi generic sg15 type 0 [ 2058.804730] [ T1833] sd 11:0:0:8: [sdo] Write cache: enabled, read cache: enabled, supports DPO and FUA [ 2058.804997] [ T1833] sd 11:0:0:8: [sdo] permanent stream count = 5 [ 2058.805140] [ T1833] sd 11:0:0:8: [sdo] Preferred minimum I/O size 512 bytes [ 2058.805158] [ T1833] sd 11:0:0:8: [sdo] Optimal transfer size 524288 bytes [ 2058.806506] [ T14464] scsi 11:0:0:9: Direct-Access Linux scsi_debug 0191 PQ: 0 ANSI: 7 [ 2058.807211] [ T12862] sd 11:0:0:5: [sdl] Preferred minimum I/O size 512 bytes [ 2058.807841] [ T14464] scsi 11:0:0:9: Power-on or device reset occurred [ 2058.812469] [ T218] sd 11:0:0:9: [sdp] 268435456 512-byte logical blocks: (137 GB/128 GiB) [ 2058.812565] [ T218] sd 11:0:0:9: [sdp] Write Protect is off [ 2058.812565] [ T14464] sd 11:0:0:9: Attached scsi generic sg16 type 0 [ 2058.812589] [ T218] sd 11:0:0:9: [sdp] Mode Sense: 73 00 10 08 [ 2058.812735] [ T218] sd 11:0:0:9: [sdp] Write cache: enabled, read cache: enabled, supports DPO and FUA [ 2058.813117] [ T218] sd 11:0:0:9: [sdp] permanent stream count = 5 [ 2058.813326] [ T218] sd 11:0:0:9: [sdp] Preferred minimum I/O size 512 bytes [ 2058.815011] [ T1364] sd 11:0:0:7: [sdn] Write Protect is off [ 2058.815039] [ T1364] sd 11:0:0:7: [sdn] Mode Sense: 73 00 10 08 [ 2058.815186] [ T1364] sd 11:0:0:7: [sdn] Write cache: enabled, read cache: enabled, supports DPO and FUA [ 2058.816236] [ T14464] scsi 11:0:0:10: Direct-Access Linux scsi_debug 0191 PQ: 0 ANSI: 7 [ 2058.817650] [ T1364] sd 11:0:0:7: [sdn] permanent stream count = 5 [ 2058.817783] [ T1364] sd 11:0:0:7: [sdn] Preferred minimum I/O size 512 bytes [ 2058.817800] [ T1364] sd 11:0:0:7: [sdn] Optimal transfer size 524288 bytes [ 2058.818822] [ T14464] scsi 11:0:0:10: Power-on or device reset occurred [ 2058.822197] [ T12862] sd 11:0:0:5: [sdl] Optimal transfer size 524288 bytes [ 2058.822964] [ T14478] sd 11:0:0:10: [sdq] 268435456 512-byte logical blocks: (137 GB/128 GiB) [ 2058.823055] [ T14478] sd 11:0:0:10: [sdq] Write Protect is off [ 2058.823080] [ T14478] sd 11:0:0:10: [sdq] Mode Sense: 73 00 10 08 [ 2058.823141] [ T14464] sd 11:0:0:10: Attached scsi generic sg17 type 0 [ 2058.823221] [ T14478] sd 11:0:0:10: [sdq] Write cache: enabled, read cache: enabled, supports DPO and FUA [ 2058.823573] [ T14478] sd 11:0:0:10: [sdq] permanent stream count = 5 [ 2058.823778] [ T14478] sd 11:0:0:10: [sdq] Preferred minimum I/O size 512 bytes [ 2058.823802] [ T14478] sd 11:0:0:10: [sdq] Optimal transfer size 524288 bytes [ 2058.828884] [ T14464] scsi 11:0:0:11: Direct-Access Linux scsi_debug 0191 PQ: 0 ANSI: 7 [ 2058.829178] [ T218] sd 11:0:0:9: [sdp] Optimal transfer size 524288 bytes [ 2058.831324] [ T14464] scsi 11:0:0:11: Power-on or device reset occurred [ 2058.835542] [ T14464] sd 11:0:0:11: Attached scsi generic sg18 type 0 [ 2058.835556] [ T14481] sd 11:0:0:11: [sdr] 268435456 512-byte logical blocks: (137 GB/128 GiB) [ 2058.835653] [ T14481] sd 11:0:0:11: [sdr] Write Protect is off [ 2058.835679] [ T14481] sd 11:0:0:11: [sdr] Mode Sense: 73 00 10 08 [ 2058.835827] [ T14481] sd 11:0:0:11: [sdr] Write cache: enabled, read cache: enabled, supports DPO and FUA [ 2058.836189] [ T14481] sd 11:0:0:11: [sdr] permanent stream count = 5 [ 2058.836404] [ T14481] sd 11:0:0:11: [sdr] Preferred minimum I/O size 512 bytes [ 2058.836428] [ T14481] sd 11:0:0:11: [sdr] Optimal transfer size 524288 bytes [ 2058.839928] [ T13564] sd 11:0:0:6: [sdm] Attached SCSI disk [ 2058.840436] [ T1363] sd 11:0:0:4: [sdk] Attached SCSI disk [ 2059.355076] [ T14464] scsi 11:0:0:12: Direct-Access Linux scsi_debug 0191 PQ: 0 ANSI: 7 [ 2059.368193] [ T1364] sd 11:0:0:7: [sdn] Attached SCSI disk [ 2059.369823] [ T14464] scsi 11:0:0:12: Power-on or device reset occurred [ 2059.370714] [ T1833] sd 11:0:0:8: [sdo] Attached SCSI disk [ 2059.391641] [ T12862] sd 11:0:0:5: [sdl] Attached SCSI disk [ 2059.392407] [ T14481] sd 11:0:0:11: [sdr] Attached SCSI disk [ 2059.396276] [ T14478] sd 11:0:0:10: [sdq] Attached SCSI disk [ 2059.396329] [ T218] sd 11:0:0:9: [sdp] Attached SCSI disk [ 2059.397480] [ T1364] sd 11:0:0:12: [sds] 268435456 512-byte logical blocks: (137 GB/128 GiB) [ 2059.397559] [ T1364] sd 11:0:0:12: [sds] Write Protect is off [ 2059.397581] [ T1364] sd 11:0:0:12: [sds] Mode Sense: 73 00 10 08 [ 2059.397703] [ T1364] sd 11:0:0:12: [sds] Write cache: enabled, read cache: enabled, supports DPO and FUA [ 2059.398026] [ T1364] sd 11:0:0:12: [sds] permanent stream count = 5 [ 2059.400715] [ T14464] sd 11:0:0:12: Attached scsi generic sg19 type 0 [ 2059.402998] [ T14464] scsi 11:0:0:13: Direct-Access Linux scsi_debug 0191 PQ: 0 ANSI: 7 [ 2059.404655] [ T14464] scsi 11:0:0:13: Power-on or device reset occurred [ 2059.409121] [ T1364] sd 11:0:0:12: [sds] Preferred minimum I/O size 512 bytes [ 2059.417442] [ T14481] sd 11:0:0:13: [sdt] 268435456 512-byte logical blocks: (137 GB/128 GiB) [ 2059.418286] [ T14464] sd 11:0:0:13: Attached scsi generic sg20 type 0 [ 2059.421955] [ T14464] scsi 11:0:0:14: Direct-Access Linux scsi_debug 0191 PQ: 0 ANSI: 7 [ 2059.422764] [ T1364] sd 11:0:0:12: [sds] Optimal transfer size 524288 bytes [ 2059.427967] [ T14464] scsi 11:0:0:14: Power-on or device reset occurred [ 2059.428505] [ T14481] sd 11:0:0:13: [sdt] Write Protect is off [ 2059.430198] [ T14464] sd 11:0:0:14: Attached scsi generic sg21 type 0 [ 2059.430731] [ T12862] sd 11:0:0:14: [sdu] 268435456 512-byte logical blocks: (137 GB/128 GiB) [ 2059.430827] [ T12862] sd 11:0:0:14: [sdu] Write Protect is off [ 2059.430853] [ T12862] sd 11:0:0:14: [sdu] Mode Sense: 73 00 10 08 [ 2059.431015] [ T12862] sd 11:0:0:14: [sdu] Write cache: enabled, read cache: enabled, supports DPO and FUA [ 2059.431365] [ T12862] sd 11:0:0:14: [sdu] permanent stream count = 5 [ 2059.431576] [ T12862] sd 11:0:0:14: [sdu] Preferred minimum I/O size 512 bytes [ 2059.431601] [ T12862] sd 11:0:0:14: [sdu] Optimal transfer size 524288 bytes [ 2059.438581] [ T14481] sd 11:0:0:13: [sdt] Mode Sense: 73 00 10 08 [ 2059.446665] [ T14464] scsi 11:0:0:15: Direct-Access Linux scsi_debug 0191 PQ: 0 ANSI: 7 [ 2059.451125] [ T14481] sd 11:0:0:13: [sdt] Write cache: enabled, read cache: enabled, supports DPO and FUA [ 2059.461086] [ T14464] scsi 11:0:0:15: Power-on or device reset occurred [ 2059.466682] [ T14481] sd 11:0:0:13: [sdt] permanent stream count = 5 [ 2059.475132] [ T218] sd 11:0:0:15: [sdv] 268435456 512-byte logical blocks: (137 GB/128 GiB) [ 2059.475420] [ T14464] sd 11:0:0:15: Attached scsi generic sg22 type 0 [ 2059.477071] [ T14464] scsi 11:0:0:16: Direct-Access Linux scsi_debug 0191 PQ: 0 ANSI: 7 [ 2059.478157] [ T14464] scsi 11:0:0:16: Power-on or device reset occurred [ 2059.479761] [ T14478] sd 11:0:0:16: [sdw] 268435456 512-byte logical blocks: (137 GB/128 GiB) [ 2059.479797] [ T14464] sd 11:0:0:16: Attached scsi generic sg23 type 0 [ 2059.479820] [ T14478] sd 11:0:0:16: [sdw] Write Protect is off [ 2059.479835] [ T14478] sd 11:0:0:16: [sdw] Mode Sense: 73 00 10 08 [ 2059.479933] [ T14478] sd 11:0:0:16: [sdw] Write cache: enabled, read cache: enabled, supports DPO and FUA [ 2059.480152] [ T14478] sd 11:0:0:16: [sdw] permanent stream count = 5 [ 2059.480269] [ T14478] sd 11:0:0:16: [sdw] Preferred minimum I/O size 512 bytes [ 2059.480283] [ T14478] sd 11:0:0:16: [sdw] Optimal transfer size 524288 bytes [ 2059.481441] [ T14464] scsi 11:0:0:17: Direct-Access Linux scsi_debug 0191 PQ: 0 ANSI: 7 [ 2059.482000] [ T14481] sd 11:0:0:13: [sdt] Preferred minimum I/O size 512 bytes [ 2059.482517] [ T14464] scsi 11:0:0:17: Power-on or device reset occurred [ 2059.484733] [ T1833] sd 11:0:0:17: [sdx] 268435456 512-byte logical blocks: (137 GB/128 GiB) [ 2059.484809] [ T1833] sd 11:0:0:17: [sdx] Write Protect is off [ 2059.484822] [ T1833] sd 11:0:0:17: [sdx] Mode Sense: 73 00 10 08 [ 2059.484898] [ T1833] sd 11:0:0:17: [sdx] Write cache: enabled, read cache: enabled, supports DPO and FUA [ 2059.485071] [ T14464] sd 11:0:0:17: Attached scsi generic sg24 type 0 [ 2059.485185] [ T1833] sd 11:0:0:17: [sdx] permanent stream count = 5 [ 2059.485357] [ T1833] sd 11:0:0:17: [sdx] Preferred minimum I/O size 512 bytes [ 2059.485378] [ T1833] sd 11:0:0:17: [sdx] Optimal transfer size 524288 bytes [ 2059.488238] [ T218] sd 11:0:0:15: [sdv] Write Protect is off [ 2059.489294] [ T14464] scsi 11:0:0:18: Direct-Access Linux scsi_debug 0191 PQ: 0 ANSI: 7 [ 2059.490737] [ T14464] scsi 11:0:0:18: Power-on or device reset occurred [ 2059.493269] [ T14487] sd 11:0:0:18: [sdy] 268435456 512-byte logical blocks: (137 GB/128 GiB) [ 2059.493331] [ T14487] sd 11:0:0:18: [sdy] Write Protect is off [ 2059.493345] [ T14487] sd 11:0:0:18: [sdy] Mode Sense: 73 00 10 08 [ 2059.493448] [ T14487] sd 11:0:0:18: [sdy] Write cache: enabled, read cache: enabled, supports DPO and FUA [ 2059.493611] [ T14464] sd 11:0:0:18: Attached scsi generic sg25 type 0 [ 2059.493792] [ T14487] sd 11:0:0:18: [sdy] permanent stream count = 5 [ 2059.494021] [ T14487] sd 11:0:0:18: [sdy] Preferred minimum I/O size 512 bytes [ 2059.494046] [ T14487] sd 11:0:0:18: [sdy] Optimal transfer size 524288 bytes [ 2059.497143] [ T14481] sd 11:0:0:13: [sdt] Optimal transfer size 524288 bytes [ 2059.497221] [ T14464] scsi 11:0:0:19: Direct-Access Linux scsi_debug 0191 PQ: 0 ANSI: 7 [ 2059.499748] [ T14464] scsi 11:0:0:19: Power-on or device reset occurred [ 2059.503212] [ T14485] sd 11:0:0:19: [sdz] 268435456 512-byte logical blocks: (137 GB/128 GiB) [ 2059.503260] [ T14485] sd 11:0:0:19: [sdz] Write Protect is off [ 2059.503271] [ T14485] sd 11:0:0:19: [sdz] Mode Sense: 73 00 10 08 [ 2059.503334] [ T14485] sd 11:0:0:19: [sdz] Write cache: enabled, read cache: enabled, supports DPO and FUA [ 2059.503524] [ T14485] sd 11:0:0:19: [sdz] permanent stream count = 5 [ 2059.503615] [ T14485] sd 11:0:0:19: [sdz] Preferred minimum I/O size 512 bytes [ 2059.503626] [ T14485] sd 11:0:0:19: [sdz] Optimal transfer size 524288 bytes [ 2059.504037] [ T218] sd 11:0:0:15: [sdv] Mode Sense: 73 00 10 08 [ 2059.504265] [ T14464] sd 11:0:0:19: Attached scsi generic sg26 type 0 [ 2059.510373] [ T14464] scsi 11:0:0:20: Direct-Access Linux scsi_debug 0191 PQ: 0 ANSI: 7 [ 2059.512917] [ T14464] scsi 11:0:0:20: Power-on or device reset occurred [ 2059.517673] [ T218] sd 11:0:0:15: [sdv] Write cache: enabled, read cache: enabled, supports DPO and FUA [ 2059.525556] [ T1363] sd 11:0:0:20: [sdaa] 268435456 512-byte logical blocks: (137 GB/128 GiB) [ 2059.525589] [ T14464] sd 11:0:0:20: Attached scsi generic sg27 type 0 [ 2059.531486] [ T218] sd 11:0:0:15: [sdv] permanent stream count = 5 [ 2059.532238] [ T1364] sd 11:0:0:12: [sds] Attached SCSI disk [ 2059.534441] [ T12862] sd 11:0:0:14: [sdu] Attached SCSI disk [ 2059.538052] [ T1363] sd 11:0:0:20: [sdaa] Write Protect is off [ 2059.550328] [ T218] sd 11:0:0:15: [sdv] Preferred minimum I/O size 512 bytes [ 2059.555806] [ T1833] sd 11:0:0:17: [sdx] Attached SCSI disk [ 2059.557742] [ T14487] sd 11:0:0:18: [sdy] Attached SCSI disk [ 2059.560125] [ T1363] sd 11:0:0:20: [sdaa] Mode Sense: 73 00 10 08 [ 2059.560297] [ T1363] sd 11:0:0:20: [sdaa] Write cache: enabled, read cache: enabled, supports DPO and FUA [ 2059.561407] [ T218] sd 11:0:0:15: [sdv] Optimal transfer size 524288 bytes [ 2059.562159] [ T1363] sd 11:0:0:20: [sdaa] permanent stream count = 5 [ 2059.562378] [ T1363] sd 11:0:0:20: [sdaa] Preferred minimum I/O size 512 bytes [ 2059.562404] [ T1363] sd 11:0:0:20: [sdaa] Optimal transfer size 524288 bytes [ 2059.568521] [ T14478] sd 11:0:0:16: [sdw] Attached SCSI disk [ 2059.578734] [ T14481] sd 11:0:0:13: [sdt] Attached SCSI disk [ 2059.581764] [ T14485] sd 11:0:0:19: [sdz] Attached SCSI disk [ 2060.106344] [ T1363] sd 11:0:0:20: [sdaa] Attached SCSI disk [ 2060.107143] [ T218] sd 11:0:0:15: [sdv] Attached SCSI disk [ 2068.306807] [ T228] device offline error, dev sdg, sector 240029840 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 2068.306873] [ T14725] device offline error, dev sdg, sector 247308192 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 2068.306917] [ T14726] device offline error, dev sdg, sector 224634144 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 2068.306983] [ T14726] device offline error, dev sdg, sector 124187600 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 2068.307045] [ T14726] device offline error, dev sdg, sector 228636432 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 2068.307103] [ T14726] device offline error, dev sdg, sector 148430040 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 2068.307159] [ T14726] device offline error, dev sdg, sector 199986560 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 2068.307214] [ T14726] device offline error, dev sdg, sector 203109272 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 2068.307274] [ T14726] device offline error, dev sdg, sector 129162896 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 2068.307335] [ T14726] device offline error, dev sdg, sector 47078976 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0 [ 2068.540859] [ T14410] sd 11:0:0:0: [sdg] Synchronizing SCSI cache [ 2068.800785] [ T14410] sd 11:0:0:1: [sdh] Synchronizing SCSI cache [ 2218.084237] [ T143] INFO: task check:14410 blocked for more than 122 seconds. [ 2218.094422] [ T143] Tainted: G B 6.15.0-rc5-next-20250507-kts #1 [ 2218.106947] [ T143] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 2218.116296] [ T143] task:check state:D stack:0 pid:14410 tgid:14410 ppid:1685 task_flags:0x480140 flags:0x00004002 [ 2218.129533] [ T143] Call Trace: [ 2218.134258] [ T143] <TASK> [ 2218.138356] [ T143] __schedule+0x8bc/0x1ad0 [ 2218.143896] [ T143] ? __pfx___schedule+0x10/0x10 [ 2218.149865] [ T143] ? do_raw_spin_lock+0x128/0x270 [ 2218.156000] [ T143] ? do_raw_spin_lock+0x128/0x270 [ 2218.162093] [ T143] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 2218.168553] [ T143] ? trace_hardirqs_on+0x18/0x150 [ 2218.174675] [ T143] ? lock_acquire+0xf7/0x140 [ 2218.180278] [ T143] ? lock_acquire+0xf7/0x140 [ 2218.185895] [ T143] schedule+0xd1/0x250 [ 2218.190977] [ T143] blk_mq_freeze_queue_wait+0x125/0x170 [ 2218.197487] [ T143] ? __pfx_blk_mq_freeze_queue_wait+0x10/0x10 [ 2218.204532] [ T143] ? __pfx_autoremove_wake_function+0x10/0x10 [ 2218.211608] [ T143] ? __blk_freeze_queue_start+0xa6/0x490 [ 2218.218196] [ T143] elevator_change+0xa0/0x380 [ 2218.223878] [ T143] elevator_set_none+0x85/0xc0 [ 2218.229622] [ T143] ? __pfx_elevator_set_none+0x10/0x10 [ 2218.236006] [ T143] ? __pfx___might_resched+0x10/0x10 [ 2218.242282] [ T143] blk_unregister_queue+0x114/0x2d0 [ 2218.248424] [ T143] __del_gendisk+0x263/0xa20 [ 2218.253921] [ T143] ? down_read+0x1b6/0x480 [ 2218.259279] [ T143] ? __pfx___del_gendisk+0x10/0x10 [ 2218.265274] [ T143] ? __pfx_down_read+0x10/0x10 [ 2218.270896] [ T143] ? __pfx_down_write+0x10/0x10 [ 2218.276702] [ T143] ? __up_write+0x192/0x4f0 [ 2218.282087] [ T143] del_gendisk+0x106/0x190 [ 2218.287406] [ T143] sd_remove+0x8a/0x140 [ 2218.292539] [ T143] device_release_driver_internal+0x36d/0x520 [ 2218.299531] [ T143] bus_remove_device+0x1ef/0x3f0 [ 2218.305414] [ T143] device_del+0x3be/0x9b0 [ 2218.310663] [ T143] ? attribute_container_device_trigger+0x181/0x1f0 [ 2218.318127] [ T143] ? __pfx_device_del+0x10/0x10 [ 2218.323841] [ T143] ? __pfx_attribute_container_device_trigger+0x10/0x10 [ 2218.331699] [ T143] __scsi_remove_device+0x27f/0x340 [ 2218.337847] [ T143] sdev_store_delete+0x87/0x120 [ 2218.343608] [ T143] ? __pfx_sysfs_kf_write+0x10/0x10 [ 2218.349748] [ T143] kernfs_fop_write_iter+0x39b/0x5a0 [ 2218.355956] [ T143] ? __pfx_kernfs_fop_write_iter+0x10/0x10 [ 2218.362758] [ T143] vfs_write+0x518/0xee0 [ 2218.367931] [ T143] ? __pfx_vfs_write+0x10/0x10 [ 2218.372630] [ C11] perf: interrupt took too long (4051 > 3946), lowering kernel.perf_event_max_sample_rate to 49000 [ 2218.385314] [ T143] ? fput_close+0x137/0x1a0 [ 2218.390981] [ T143] ? __pfx_fput_close+0x10/0x10 [ 2218.396384] [ T143] ksys_write+0xff/0x200 [ 2218.401111] [ T143] ? __pfx_ksys_write+0x10/0x10 [ 2218.406434] [ T143] ? __x64_sys_dup2+0x6f/0x580 [ 2218.411640] [ T143] do_syscall_64+0x94/0x380 [ 2218.416575] [ T143] ? __x64_sys_fcntl+0x10d/0x1c0 [ 2218.421958] [ T143] ? trace_hardirqs_on_prepare+0x101/0x150 [ 2218.428211] [ T143] ? do_syscall_64+0x158/0x380 [ 2218.433429] [ T143] ? trace_hardirqs_on_prepare+0x101/0x150 [ 2218.439685] [ T143] ? do_syscall_64+0x158/0x380 [ 2218.444895] [ T143] ? __pfx_do_fcntl+0x10/0x10 [ 2218.450048] [ T143] ? __pfx_locks_remove_posix+0x10/0x10 [ 2218.456066] [ T143] ? fput_close_sync+0x137/0x1a0 [ 2218.461466] [ T143] ? __pfx_fput_close_sync+0x10/0x10 [ 2218.467225] [ T143] ? do_raw_spin_unlock+0x59/0x230 [ 2218.472802] [ T143] ? trace_hardirqs_on_prepare+0x101/0x150 [ 2218.479082] [ T143] ? do_syscall_64+0x158/0x380 [ 2218.484313] [ T143] ? do_syscall_64+0x158/0x380 [ 2218.489534] [ T143] ? trace_hardirqs_on_prepare+0x101/0x150 [ 2218.495796] [ T143] ? do_syscall_64+0x158/0x380 [ 2218.501022] [ T143] ? clear_bhb_loop+0x15/0x70 [ 2218.506173] [ T143] ? clear_bhb_loop+0x15/0x70 [ 2218.511312] [ T143] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 2218.517656] [ T143] RIP: 0033:0x7fb767562a06 [ 2218.522533] [ T143] RSP: 002b:00007fffb0f33340 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 2218.531427] [ T143] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fb767562a06 [ 2218.539877] [ T143] RDX: 0000000000000002 RSI: 00005648de664130 RDI: 0000000000000001 [ 2218.548203] [ T143] RBP: 00007fffb0f33360 R08: 0000000000000000 R09: 0000000000000000 [ 2218.556517] [ T143] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000002 [ 2218.564837] [ T143] R13: 00005648de664130 R14: 00007fb7676de5c0 R15: 0000000000000000 [ 2218.573172] [ T143] </TASK> [ 2218.576543] [ T143] INFO: lockdep is turned off. [ 2340.963556] [ T143] INFO: task check:14410 blocked for more than 245 seconds. [ 2340.971224] [ T143] Tainted: G B 6.15.0-rc5-next-20250507-kts #1 [ 2340.979726] [ T143] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 2340.989157] [ T143] task:check state:D stack:0 pid:14410 tgid:14410 ppid:1685 task_flags:0x480140 flags:0x00004002 [ 2341.003091] [ T143] Call Trace: [ 2341.007396] [ T143] <TASK> [ 2341.011333] [ T143] __schedule+0x8bc/0x1ad0 [ 2341.016799] [ T143] ? __pfx___schedule+0x10/0x10 [ 2341.022709] [ T143] ? do_raw_spin_lock+0x128/0x270 [ 2341.028775] [ T143] ? do_raw_spin_lock+0x128/0x270 [ 2341.034846] [ T143] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 2341.041255] [ T143] ? trace_hardirqs_on+0x18/0x150 [ 2341.047327] [ T143] ? lock_acquire+0xf7/0x140 [ 2341.052915] [ T143] ? lock_acquire+0xf7/0x140 [ 2341.058495] [ T143] schedule+0xd1/0x250 [ 2341.063543] [ T143] blk_mq_freeze_queue_wait+0x125/0x170 [ 2341.070028] [ T143] ? __pfx_blk_mq_freeze_queue_wait+0x10/0x10 [ 2341.077113] [ T143] ? __pfx_autoremove_wake_function+0x10/0x10 [ 2341.084203] [ T143] ? __blk_freeze_queue_start+0xa6/0x490 [ 2341.090822] [ T143] elevator_change+0xa0/0x380 [ 2341.096468] [ T143] elevator_set_none+0x85/0xc0 [ 2341.102214] [ T143] ? __pfx_elevator_set_none+0x10/0x10 [ 2341.108699] [ T143] ? __pfx___might_resched+0x10/0x10 [ 2341.114990] [ T143] blk_unregister_queue+0x114/0x2d0 [ 2341.121165] [ T143] __del_gendisk+0x263/0xa20 [ 2341.126716] [ T143] ? down_read+0x1b6/0x480 [ 2341.132092] [ T143] ? __pfx___del_gendisk+0x10/0x10 [ 2341.138132] [ T143] ? __pfx_down_read+0x10/0x10 [ 2341.143916] [ T143] ? __pfx_down_write+0x10/0x10 [ 2341.149750] [ T143] ? __up_write+0x192/0x4f0 [ 2341.155184] [ T143] del_gendisk+0x106/0x190 [ 2341.160598] [ T143] sd_remove+0x8a/0x140 [ 2341.165732] [ T143] device_release_driver_internal+0x36d/0x520 [ 2341.172754] [ T143] bus_remove_device+0x1ef/0x3f0 [ 2341.178636] [ T143] device_del+0x3be/0x9b0 [ 2341.183990] [ T143] ? attribute_container_device_trigger+0x181/0x1f0 [ 2341.191578] [ T143] ? __pfx_device_del+0x10/0x10 [ 2341.197419] [ T143] ? __pfx_attribute_container_device_trigger+0x10/0x10 [ 2341.205375] [ T143] __scsi_remove_device+0x27f/0x340 [ 2341.211577] [ T143] sdev_store_delete+0x87/0x120 [ 2341.217414] [ T143] ? __pfx_sysfs_kf_write+0x10/0x10 [ 2341.223526] [ T143] kernfs_fop_write_iter+0x39b/0x5a0 [ 2341.229798] [ T143] ? __pfx_kernfs_fop_write_iter+0x10/0x10 [ 2341.236595] [ T143] vfs_write+0x518/0xee0 [ 2341.241765] [ T143] ? __pfx_vfs_write+0x10/0x10 [ 2341.247472] [ T143] ? fput_close+0x137/0x1a0 [ 2341.252946] [ T143] ? __pfx_fput_close+0x10/0x10 [ 2341.258713] [ T143] ksys_write+0xff/0x200 [ 2341.263860] [ T143] ? __pfx_ksys_write+0x10/0x10 [ 2341.269648] [ T143] ? __x64_sys_dup2+0x6f/0x580 [ 2341.275206] [ T143] do_syscall_64+0x94/0x380 [ 2341.280529] [ T143] ? __x64_sys_fcntl+0x10d/0x1c0 [ 2341.286276] [ T143] ? trace_hardirqs_on_prepare+0x101/0x150 [ 2341.292862] [ T143] ? do_syscall_64+0x158/0x380 [ 2341.298442] [ T143] ? trace_hardirqs_on_prepare+0x101/0x150 [ 2341.305135] [ T143] ? do_syscall_64+0x158/0x380 [ 2341.310788] [ T143] ? __pfx_do_fcntl+0x10/0x10 [ 2341.316458] [ T143] ? __pfx_locks_remove_posix+0x10/0x10 [ 2341.322641] [ T143] ? fput_close_sync+0x137/0x1a0 [ 2341.328001] [ T143] ? __pfx_fput_close_sync+0x10/0x10 [ 2341.333709] [ T143] ? do_raw_spin_unlock+0x59/0x230 [ 2341.339247] [ T143] ? trace_hardirqs_on_prepare+0x101/0x150 [ 2341.345497] [ T143] ? do_syscall_64+0x158/0x380 [ 2341.350705] [ T143] ? do_syscall_64+0x158/0x380 [ 2341.355891] [ T143] ? trace_hardirqs_on_prepare+0x101/0x150 [ 2341.362119] [ T143] ? do_syscall_64+0x158/0x380 [ 2341.367295] [ T143] ? clear_bhb_loop+0x15/0x70 [ 2341.372406] [ T143] ? clear_bhb_loop+0x15/0x70 [ 2341.377509] [ T143] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 2341.383830] [ T143] RIP: 0033:0x7fb767562a06 [ 2341.388679] [ T143] RSP: 002b:00007fffb0f33340 EFLAGS: 00000202 ORIG_RAX: 0000000000000001 [ 2341.397534] [ T143] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fb767562a06 [ 2341.405949] [ T143] RDX: 0000000000000002 RSI: 00005648de664130 RDI: 0000000000000001 [ 2341.414385] [ T143] RBP: 00007fffb0f33360 R08: 0000000000000000 R09: 0000000000000000 [ 2341.422829] [ T143] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000002 [ 2341.431257] [ T143] R13: 00005648de664130 R14: 00007fb7676de5c0 R15: 0000000000000000 [ 2341.439709] [ T143] </TASK> ...
