Hello
The kernel BUG was triggered by blktests zbd/009 on v6.17-rc3, please
help check it and let me know if you need any infor/test for it,
thanks.
# ./check zbd/009
zbd/009 (test gap zone support with BTRFS) [failed]
runtime 1.777s ... 5.890s
--- tests/zbd/009.out 2025-09-02 20:08:01.638628999 -0400
+++ /root/blktests/results/nodev/zbd/009.out.bad 2025-09-03
04:18:32.360095891 -0400
@@ -1,2 +1,4 @@
Running zbd/009
-Test complete
+tests/zbd/009: line 42: 1461 Segmentation fault mount -t
btrfs "${dev}" "${mount_dir}"
+modprobe: FATAL: Module scsi_debug is in use.
+Test failed
modprobe: FATAL: Module scsi_debug is in use.
[ 317.501900] run blktests zbd/009 at 2025-09-03 04:33:43
[ 317.661628] sd 13:0:0:0: [sdn] Synchronizing SCSI cache
[ 318.464792] scsi_debug:sdebug_driver_probe: scsi_debug: trim
poll_queues to 0. poll_q/nr_hw = (0/1)
[ 318.474936] scsi host13: scsi_debug: version 0191 [20210520]
dev_size_mb=1024, opts=0x0, submit_queues=1, statistics=0
[ 318.502019] scsi 13:0:0:0: Direct-Access-ZBC Linux scsi_debug
0191 PQ: 0 ANSI: 7
[ 318.514301] scsi 13:0:0:0: Power-on or device reset occurred
[ 318.526186] sd 13:0:0:0: Attached scsi generic sg13 type 20
[ 318.527006] sd 13:0:0:0: [sdn] Host-managed zoned block device
[ 318.543292] sd 13:0:0:0: [sdn] 262144 4096-byte logical blocks:
(1.07 GB/1.00 GiB)
[ 318.552614] sd 13:0:0:0: [sdn] Write Protect is off
[ 318.558137] sd 13:0:0:0: [sdn] Mode Sense: 5b 00 10 08
[ 318.558555] sd 13:0:0:0: [sdn] Write cache: enabled, read cache:
enabled, supports DPO and FUA
[ 318.568950] sd 13:0:0:0: [sdn] permanent stream count = 5
[ 318.576121] sd 13:0:0:0: [sdn] Preferred minimum I/O size 4096 bytes
[ 318.583446] sd 13:0:0:0: [sdn] Optimal transfer size 4194304 bytes
[ 318.593500] sd 13:0:0:0: [sdn] 256 zones of 1024 logical blocks
[ 318.651787] sd 13:0:0:0: [sdn] Attached SCSI disk
[ 319.736198] BTRFS: device fsid 2c2dcb97-3f07-481c-ad31-dce6d400c303
devid 1 transid 8 /dev/sdn (8:208) scanned by mount (1370)
[ 319.755053] BTRFS info (device sdn): first mount of filesystem
2c2dcb97-3f07-481c-ad31-dce6d400c303
[ 319.765257] BTRFS info (device sdn): using crc32c (crc32c-lib)
checksum algorithm
[ 319.795471] BTRFS info (device sdn): host-managed zoned block
device /dev/sdn, 256 zones of 4194304 bytes
[ 319.806542] BTRFS info (device sdn): zoned mode enabled with zone
size 4194304
[ 319.819821] assertion failed: bg->zone_unusable == 0 :: 0, in
fs/btrfs/zoned.c:2587
[ 319.828449] ------------[ cut here ]------------
[ 319.833618] kernel BUG at fs/btrfs/zoned.c:2587!
[ 319.838793] Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
[ 319.844829] CPU: 3 UID: 0 PID: 1370 Comm: mount Tainted: G W
------ ---
6.17.0-0.rc3.250826gfab1beda7597.32.fc44.x86_64+debug #1 PREEMPT(lazy)
[ 319.860948] Tainted: [W]=WARN
[ 319.864259] Hardware name: Dell Inc. PowerEdge R730/0WCJNT, BIOS
2.19.0 12/12/2023
[ 319.872704] RIP: 0010:btrfs_zoned_reserve_data_reloc_bg.cold+0xb2/0xb4
[ 319.880014] Code: ab e8 7e ab f7 ff 0f 0b 41 b8 1b 0a 00 00 48 c7
c1 80 9f 59 ab 31 d2 48 c7 c6 20 b8 59 ab 48 c7 c7 20 a0 59 ab e8 5a
ab f7 ff <0f> 0b 41 b8 5f 0a 00 00 48 c7 c1 80 9f 59 ab 31 d2 48 c7 c6
00 b9
[ 319.900977] RSP: 0018:ffffc9000c21f930 EFLAGS: 00010282
[ 319.906816] RAX: 0000000000000047 RBX: ffff8888d1a54000 RCX: 0000000000000000
[ 319.914783] RDX: 0000000000000047 RSI: 1ffffffff629cc84 RDI: fffff52001843f18
[ 319.922742] RBP: ffff888121b7c000 R08: ffffffffa802cbb5 R09: fffff52001843edc
[ 319.930709] R10: 0000000000000003 R11: 0000000000000001 R12: 0000000000000000
[ 319.938666] R13: 0000000000000001 R14: ffff888121b7c128 R15: ffff88810f379800
[ 319.946625] FS: 00007fbd89e98840(0000) GS:ffff8890af8e8000(0000)
knlGS:0000000000000000
[ 319.955661] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 319.962077] CR2: 0000559e0ad4b540 CR3: 00000008e14ce003 CR4: 00000000003726f0
[ 319.970046] Call Trace:
[ 319.972767] <TASK>
[ 319.975102] ? create_space_info+0x155/0x390
[ 319.979880] open_ctree+0x1874/0x2203
[ 319.983977] btrfs_fill_super.cold+0x2c/0x16d
[ 319.988850] btrfs_get_tree_super+0x936/0xd60
[ 319.993725] btrfs_get_tree_subvol+0x230/0x5f0
[ 319.998692] vfs_get_tree+0x8b/0x2f0
[ 320.002690] ? capable+0x58/0xc0
[ 320.006299] vfs_cmd_create+0xbd/0x280
[ 320.010490] __do_sys_fsconfig+0x659/0xa40
[ 320.015066] ? __pfx___do_sys_fsconfig+0x10/0x10
[ 320.020223] ? rcu_is_watching+0x15/0xe0
[ 320.024608] ? __pfx___mutex_lock+0x10/0x10
[ 320.029282] ? fscontext_read+0x24e/0x2a0
[ 320.033761] ? file_has_perm+0x25b/0x320
[ 320.038149] ? __pfx___mutex_unlock_slowpath+0x10/0x10
[ 320.043892] do_syscall_64+0x98/0x3c0
[ 320.047991] ? fscontext_read+0x24e/0x2a0
[ 320.052468] ? rw_verify_area+0x6f/0x5f0
[ 320.056855] ? vfs_read+0x171/0xb20
[ 320.060753] ? vfs_fstatat+0x75/0xa0
[ 320.064752] ? __pfx_vfs_read+0x10/0x10
[ 320.069038] ? vfs_fstatat+0x75/0xa0
[ 320.073032] ? __pfx_map_id_range_up+0x10/0x10
[ 320.078002] ? __do_sys_newfstatat+0x83/0xe0
[ 320.082773] ? __pfx___do_sys_newfstatat+0x10/0x10
[ 320.088128] ? from_kgid_munged+0x8c/0x120
[ 320.092707] ? ksys_read+0xff/0x200
[ 320.096606] ? __pfx_ksys_read+0x10/0x10
[ 320.100987] ? trace_hardirqs_on_prepare+0x1d/0x30
[ 320.106342] ? do_syscall_64+0x161/0x3c0
[ 320.110725] ? trace_irq_enable.constprop.0+0xc0/0x100
[ 320.116465] ? rcu_is_watching+0x15/0xe0
[ 320.120847] ? trace_irq_enable.constprop.0+0xc0/0x100
[ 320.126587] ? trace_hardirqs_on_prepare+0x1d/0x30
[ 320.131938] ? do_syscall_64+0x161/0x3c0
[ 320.136322] ? trace_hardirqs_on_prepare+0x1d/0x30
[ 320.141674] ? do_syscall_64+0x161/0x3c0
[ 320.146055] ? rcu_is_watching+0x15/0xe0
[ 320.150438] ? trace_irq_enable.constprop.0+0xc0/0x100
[ 320.156178] ? trace_hardirqs_on_prepare+0x1d/0x30
[ 320.161529] ? do_syscall_64+0x161/0x3c0
[ 320.165912] entry_SYSCALL_64_after_hwframe+0x76/0x7e
[ 320.171556] RIP: 0033:0x7fbd8a0782ce
[ 320.175566] Code: 73 01 c3 48 8b 0d 32 3b 0f 00 f7 d8 64 89 01 48
83 c8 ff c3 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 49 89 ca b8 af 01 00
00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 02 3b 0f 00 f7 d8 64 89
01 48
[ 320.196527] RSP: 002b:00007ffee3b47c88 EFLAGS: 00000246 ORIG_RAX:
00000000000001af
[ 320.204984] RAX: ffffffffffffffda RBX: 0000557b66ff26f0 RCX: 00007fbd8a0782ce
[ 320.212951] RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000003
[ 320.220917] RBP: 00007ffee3b47dd0 R08: 0000000000000000 R09: 0000000000000000
[ 320.228876] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
[ 320.236843] R13: 0000557b66ff3860 R14: 00007fbd8a1f9a60 R15: 0000557b66ff3928
[ 320.244817] </TASK>
[ 320.247257] Modules linked in: scsi_debug null_blk platform_profile
dell_wmi dell_smbios dell_wmi_descriptor sparse_keymap iTCO_wdt rfkill
intel_rapl_msr video intel_pmc_bxt iTCO_vendor_support
intel_rapl_common dcdbas intel_uncore_frequency
intel_uncore_frequency_common sb_edac x86_pkg_temp_thermal
intel_powerclamp coretemp kvm_intel kvm irqbypass rapl intel_cstate
intel_uncore bnx2x mxm_wmi i40e mei_me mei mdio libie bna lpc_ich
libie_adminq ipmi_ssif ipmi_si acpi_power_meter acpi_ipmi ipmi_devintf
ipmi_msghandler fuse loop nfnetlink zram lz4hc_compress lz4_compress
nvme mgag200 polyval_clmulni nvme_core i2c_algo_bit
ghash_clmulni_intel nvme_keyring bfa nvme_auth megaraid_sas
scsi_transport_fc wmi i2c_dev [last unloaded: scsi_debug]
[ 320.320131] ---[ end trace 0000000000000000 ]---
[ 320.389848] RIP: 0010:btrfs_zoned_reserve_data_reloc_bg.cold+0xb2/0xb4
[ 320.397161] Code: ab e8 7e ab f7 ff 0f 0b 41 b8 1b 0a 00 00 48 c7
c1 80 9f 59 ab 31 d2 48 c7 c6 20 b8 59 ab 48 c7 c7 20 a0 59 ab e8 5a
ab f7 ff <0f> 0b 41 b8 5f 0a 00 00 48 c7 c1 80 9f 59 ab 31 d2 48 c7 c6
00 b9
[ 320.418138] RSP: 0018:ffffc9000c21f930 EFLAGS: 00010282
[ 320.423987] RAX: 0000000000000047 RBX: ffff8888d1a54000 RCX: 0000000000000000
[ 320.431967] RDX: 0000000000000047 RSI: 1ffffffff629cc84 RDI: fffff52001843f18
[ 320.439947] RBP: ffff888121b7c000 R08: ffffffffa802cbb5 R09: fffff52001843edc
[ 320.447924] R10: 0000000000000003 R11: 0000000000000001 R12: 0000000000000000
[ 320.455903] R13: 0000000000000001 R14: ffff888121b7c128 R15: ffff88810f379800
[ 320.463881] FS: 00007fbd89e98840(0000) GS:ffff8890af8e8000(0000)
knlGS:0000000000000000
[ 320.472926] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 320.479353] CR2: 0000559e0ad4b540 CR3: 00000008e14ce003 CR4: 00000000003726f0
[ 320.487333] note: mount[1370] exited with preempt_count 1
--
Best Regards,
Yi Zhang
