Hello
commit[1] on linux-block/for-next introduced one regression which lead kernel panic, could you help check it?
[1]
commit a65dee60e5384a648bc49c4ffbd3960d3fa354b0 (origin/for-5.9/drivers)
Author: Chaitanya Kulkarni <chaitanya.kulkarni@xxxxxxx>
Date: Thu Jul 2 18:31:30 2020 -0700
null_blk: add helper for deleting the nullb_list
[2]
[ 301.942805] run blktests block/006 at 2020-07-04 07:28:13
[ 310.483587] ------------[ cut here ]------------
[ 310.488208] kernel BUG at lib/idr.c:491!
[ 310.492141] invalid opcode: 0000 [#1] SMP NOPTI
[ 310.496674] CPU: 9 PID: 2261 Comm: modprobe Tainted: G I 5.8.0-rc3+ #1
[ 310.504498] Hardware name: Dell Inc. PowerEdge R640/06NR82, BIOS 2.6.4 04/09/2020
[ 310.511982] RIP: 0010:ida_free+0x140/0x150
[ 310.516076] Code: 00 48 89 ef e8 e1 75 fd ff 48 3d 00 04 00 00 75 ce 48 89 ef e8 11 89 e3 ff eb ba 48 8d 74 2d 01 48 89 e7 e8 92 02 01 00 eb b5 <0f> 0b e8 29 65 46 00 66 0f 1f 84 00 00 00 00 00 41 55 4c 8d 6f 08
[ 310.534823] RSP: 0018:ffffa84d40fd7e50 EFLAGS: 00010282
[ 310.540047] RAX: 00000000003fffe7 RBX: 00000000ffff9c5d RCX: 0000000080800001
[ 310.547171] RDX: ffff9465fb695b01 RSI: 00000000ffff9c5d RDI: ffffffffc0546740
[ 310.554305] RBP: ffffffffc0546750 R08: 0000000000000001 R09: 0000000000000000
[ 310.561435] R10: ffff945746955760 R11: 0000000000000000 R12: 000000000000005d
[ 310.568559] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[ 310.575683] FS: 00007f8d250b7740(0000) GS:ffff9466bf840000(0000) knlGS:0000000000000000
[ 310.583760] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 310.589498] CR2: 00007f8d24553230 CR3: 000000101fc96003 CR4: 00000000007606e0
[ 310.596622] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 310.603753] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 310.610878] PKRU: 55555554
[ 310.613592] Call Trace:
[ 310.616049] null_del_dev+0x2b/0x120 [null_blk]
[ 310.620579] null_delete_nullb_list+0x2c/0x38 [null_blk]
[ 310.625890] null_exit+0x2f/0xc4d [null_blk]
[ 310.630165] __x64_sys_delete_module+0x153/0x210
[ 310.634782] ? __prepare_exit_to_usermode+0x6d/0x1c0
[ 310.639748] do_syscall_64+0x4d/0x90
[ 310.643327] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 310.648377] RIP: 0033:0x7f8d24583e57
[ 310.651958] Code: Bad RIP value.
[ 310.655189] RSP: 002b:00007ffed28bbf68 EFLAGS: 00000202 ORIG_RAX: 00000000000000b0
[ 310.662748] RAX: ffffffffffffffda RBX: 0000000001727410 RCX: 00007f8d24583e57
[ 310.669879] RDX: 0000000000000000 RSI: 0000000000000800 RDI: 0000000001727478
[ 310.677010] RBP: 0000000000000000 R08: 00007f8d2484d060 R09: 00007f8d245f8a00
[ 310.684136] R10: 00007ffed28bb360 R11: 0000000000000202 R12: 0000000000000000
[ 310.691267] R13: 0000000000000001 R14: 0000000001727478 R15: 0000000000000000
[ 310.698392] Modules linked in: null_blk(-) rpcsec_gss_krb5 auth_rpcgss nfsv4 dns_resolver nfs lockd grace fscache intel_rapl_msr intel_rapl_common rfkill skx_edac x86_pkg_temp_thermal sunrpc intel_powerclamp coretemp kvm_intel kvm iTCO_wdt dell_smbios vfat iTCO_vendor_support fat wmi_bmof dell_wmi_descriptor ipmi_ssif irqbypass crc32_pclmul dcdbas ghash_clmulni_intel aesni_intel acpi_ipmi crypto_simd ipmi_si mei_me cryptd ipmi_devintf i2c_i801 sg mei glue_helper dax_pmem_compat pcspkr i2c_smbus lpc_ich device_dax wmi ipmi_msghandler dax_pmem_core acpi_power_meter dm_multipath ip_tables xfs libcrc32c nd_pmem nd_btt sd_mod t10_pi crc_t10dif crct10dif_generic mgag200 drm_vram_helper drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm_ttm_helper ttm drm ahci libahci libata tg3 crct10dif_pclmul megaraid_sas crct10dif_common nfit crc32c_intel ptp pps_core i2c_algo_bit libnvdimm dm_mirror dm_region_hash dm_log dm_mod
[ 310.780000] ---[ end trace 61a20a5d291b22f8 ]---
[ 310.811342] RIP: 0010:ida_free+0x140/0x150
[ 310.815444] Code: 00 48 89 ef e8 e1 75 fd ff 48 3d 00 04 00 00 75 ce 48 89 ef e8 11 89 e3 ff eb ba 48 8d 74 2d 01 48 89 e7 e8 92 02 01 00 eb b5 <0f> 0b e8 29 65 46 00 66 0f 1f 84 00 00 00 00 00 41 55 4c 8d 6f 08
[ 310.834190] RSP: 0018:ffffa84d40fd7e50 EFLAGS: 00010282
[ 310.839416] RAX: 00000000003fffe7 RBX: 00000000ffff9c5d RCX: 0000000080800001
[ 310.846549] RDX: ffff9465fb695b01 RSI: 00000000ffff9c5d RDI: ffffffffc0546740
[ 310.853679] RBP: ffffffffc0546750 R08: 0000000000000001 R09: 0000000000000000
[ 310.860812] R10: ffff945746955760 R11: 0000000000000000 R12: 000000000000005d
[ 310.867945] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[ 310.875076] FS: 00007f8d250b7740(0000) GS:ffff9466bf840000(0000) knlGS:0000000000000000
[ 310.883161] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 310.888908] CR2: 00007f8d24553230 CR3: 000000101fc96003 CR4: 00000000007606e0
[ 310.896040] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 310.903172] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 310.910306] PKRU: 55555554
[ 310.913019] Kernel panic - not syncing: Fatal exception
[ 311.326108] Kernel Offset: 0x1a400000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
[ 311.351017] ---[ end Kernel panic - not syncing: Fatal exception ]---
Best Regards,
Yi Zhang
