Hi
Could you help check this regression, let me know if you need more
info/testing, thanks.
Reproducer:
# ndctl list
[
{
"dev":"namespace1.0",
"mode":"fsdax",
"map":"dev",
"size":16909336576,
"uuid":"c4ebad91-3d29-4fb6-be2c-9ee8e12c8b44",
"sector_size":512,
"align":2097152,
"blockdev":"pmem1"
}
]
# ndctl create-namespace -f -e namespace1.0 -m fsdax
{
"dev":"namespace1.0",
"mode":"fsdax",
"map":"dev",
"size":"15.75 GiB (16.91 GB)",
"uuid":"069a6b5c-917e-4c6c-a277-01fd8574ccb3",
"sector_size":512,
"align":2097152,
"blockdev":"pmem1"
}
# mkfs.ext4 /dev/pmem1
# mount /dev/pmem1 /mnt ---> panic here
kernel log:
[ 1363.513242] BUG: stack guard page was hit at 00000000118cab51 (stack is
00000000548b8b77..000000005363ed26)
[ 1363.513242] kernel stack overflow (double-fault): 0000 [#1] SMP NOPTI
[ 1363.513243] CPU: 22 PID: 14682 Comm: mount Tainted: G S I
5.9.0-rc5 #1
[ 1363.513243] Hardware name: Dell Inc. PowerEdge R640/06NR82, BIOS 2.8.1
06/26/2020
[ 1363.513243] RIP: 0010:igrab+0x14/0x50
[ 1363.513244] Code: 62 07 8c 00 85 c0 74 c6 83 f8 01 75 cd eb cd 0f 1f 80 00
00 00 00 0f 1f 44 00 00 55 48 8d af 88 00 00 00 53 48 89 fb 48 89 ef <e8> 27 65
64 00 f6 83 98 00 00 00 30 75 17 f0 ff 83 58 01 00 00 48
[ 1363.513244] RSP: 0018:ffffa700c0e0c000 EFLAGS: 00010246
[ 1363.513245] RAX: 0000000000000000 RBX: ffff95b69e415a10 RCX:
0000000000000001
[ 1363.513245] RDX: 0000000000000000 RSI: ffff95a946a406b8 RDI:
ffff95b69e415a98
[ 1363.513245] RBP: ffff95b69e415a98 R08: 0000000500000000 R09:
8080808080808080
[ 1363.513245] R10: 0000000000000000 R11: fefefefefefefeff R12:
0000000000000001
[ 1363.513246] R13: ffff95b69e415a00 R14: 0000000000000000 R15:
ffff95b79f4d3800
[ 1363.513246] FS: 00007fbe9b823080(0000) GS:ffff95b87ff80000(0000)
knlGS:0000000000000000
[ 1363.513246] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1363.513246] CR2: ffffa700c0e0bff8 CR3: 0000000ffec46002 CR4:
00000000007706e0
[ 1363.513247] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 1363.513247] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 1363.513247] PKRU: 55555554
[ 1363.513247] Call Trace:
[ 1363.513247] dax_get_by_host+0x7c/0xd0
[ 1363.513247] __bdev_dax_supported+0x72/0x170
[ 1363.513248] __generic_fsdax_supported+0x8c/0x500
[ 1363.513248] __bdev_dax_supported+0xd0/0x170
[ 1363.513248] __generic_fsdax_supported+0x8c/0x500
[ 1363.513248] __bdev_dax_supported+0xd0/0x170
[ 1363.513248] __generic_fsdax_supported+0x8c/0x500
[ 1363.513249] __bdev_dax_supported+0xd0/0x170
[ 1363.513249] __generic_fsdax_supported+0x8c/0x500
[ 1363.513249] __bdev_dax_supported+0xd0/0x170
[ 1363.513249] __generic_fsdax_supported+0x8c/0x500
[ 1363.513249] __bdev_dax_supported+0xd0/0x170
[ 1363.513250] __generic_fsdax_supported+0x8c/0x500
[ 1363.513250] __bdev_dax_supported+0xd0/0x170
[ 1363.513250] __generic_fsdax_supported+0x8c/0x500
[ 1363.513250] __bdev_dax_supported+0xd0/0x170
[ 1363.513250] __generic_fsdax_supported+0x8c/0x500
[ 1363.513250] __bdev_dax_supported+0xd0/0x170
[ 1363.513251] __generic_fsdax_supported+0x8c/0x500
[ 1363.513251] __bdev_dax_supported+0xd0/0x170
[ 1363.513251] __generic_fsdax_supported+0x8c/0x500
[ 1363.513251] __bdev_dax_supported+0xd0/0x170
[ 1363.513251] __generic_fsdax_supported+0x8c/0x500
[ 1363.513252] __bdev_dax_supported+0xd0/0x170
[ 1363.513252] __generic_fsdax_supported+0x8c/0x500
[ 1363.513252] __bdev_dax_supported+0xd0/0x170
[ 1363.513252] __generic_fsdax_supported+0x8c/0x500
[ 1363.513252] __bdev_dax_supported+0xd0/0x170
[ 1363.513252] __generic_fsdax_supported+0x8c/0x500
[ 1363.513253] __bdev_dax_supported+0xd0/0x170
[ 1363.513253] __generic_fsdax_supported+0x8c/0x500
[ 1363.513253] __bdev_dax_supported+0xd0/0x170
[ 1363.513253] __generic_fsdax_supported+0x8c/0x500
[ 1363.513253] __bdev_dax_supported+0xd0/0x170
[ 1363.513254] __generic_fsdax_supported+0x8c/0x500
[ 1363.513254] __bdev_dax_supported+0xd0/0x170
[ 1363.513254] __generic_fsdax_supported+0x8c/0x500
[ 1363.513254] __bdev_dax_supported+0xd0/0x170
[ 1363.513254] __generic_fsdax_supported+0x8c/0x500
[ 1363.513254] __bdev_dax_supported+0xd0/0x170
[ 1363.513255] __generic_fsdax_supported+0x8c/0x500
[ 1363.513255] __bdev_dax_supported+0xd0/0x170
[ 1363.513255] __generic_fsdax_supported+0x8c/0x500
[ 1363.513255] __bdev_dax_supported+0xd0/0x170
[ 1363.513255] __generic_fsdax_supported+0x8c/0x500
[ 1363.513255] __bdev_dax_supported+0xd0/0x170
[ 1363.513256] __generic_fsdax_supported+0x8c/0x500
[ 1363.513256] __bdev_dax_supported+0xd0/0x170
[ 1363.513256] __generic_fsdax_supported+0x8c/0x500
[ 1363.513256] __bdev_dax_supported+0xd0/0x170
[ 1363.513256] __generic_fsdax_supported+0x8c/0x500
[ 1363.513257] __bdev_dax_supported+0xd0/0x170
[ 1363.513257] __generic_fsdax_supported+0x8c/0x500
[ 1363.513257] __bdev_dax_supported+0xd0/0x170
[ 1363.513257] __generic_fsdax_supported+0x8c/0x500
[ 1363.513257] __bdev_dax_supported+0xd0/0x170
[ 1363.513257] __generic_fsdax_supported+0x8c/0x500
[ 1363.513258] __bdev_dax_supported+0xd0/0x170
[ 1363.513258] __generic_fsdax_supported+0x8c/0x500
[ 1363.513258] __bdev_dax_supported+0xd0/0x170
[ 1363.513258] __generic_fsdax_supported+0x8c/0x500
[ 1363.513258] __bdev_dax_supported+0xd0/0x170
[ 1363.513259] __generic_fsdax_supported+0x8c/0x500
[ 1363.513259] __bdev_dax_supported+0xd0/0x170
[ 1363.513259] __generic_fsdax_supported+0x8c/0x500
[ 1363.513259] __bdev_dax_supported+0xd0/0x170
[ 1363.513259] __generic_fsdax_supported+0x8c/0x500
[ 1363.513259] __bdev_dax_supported+0xd0/0x170
[ 1363.513260] __generic_fsdax_supported+0x8c/0x500
[ 1363.513260] __bdev_dax_supported+0xd0/0x170
[ 1363.513260] __generic_fsdax_supported+0x8c/0x500
[ 1363.513260] __bdev_dax_supported+0xd0/0x170
[ 1363.513260] __generic_fsdax_supported+0x8c/0x500
[ 1363.513261] __bdev_dax_supported+0xd0/0x170
[ 1363.513261] __generic_fsdax_supported+0x8c/0x500
[ 1363.513261] __bdev_dax_supported+0xd0/0x170
[ 1363.513261] __generic_fsdax_supported+0x8c/0x500
[ 1363.513261] __bdev_dax_supported+0xd0/0x170
[ 1363.513261] __generic_fsdax_supported+0x8c/0x500
[ 1363.513262] __bdev_dax_supported+0xd0/0x170
[ 1363.513262] __generic_fsdax_supported+0x8c/0x500
[ 1363.513262] __bdev_dax_supported+0xd0/0x170
[ 1363.513262] __generic_fsdax_supported+0x8c/0x500
[ 1363.513262] __bdev_dax_supported+0xd0/0x170
[ 1363.513263] __generic_fsdax_supported+0x8c/0x500
[ 1363.513263] __bdev_dax_supported+0xd0/0x170
[ 1363.513263] __generic_fsdax_supported+0x8c/0x500
[ 1363.513263] __bdev_dax_supported+0xd0/0x170
[ 1363.513263] __generic_fsdax_supported+0x8c/0x500
[ 1363.513263] __bdev_dax_supported+0xd0/0x170
[ 1363.513264] __generic_fsdax_supported+0x8c/0x500
[ 1363.513264] __bdev_dax_supported+0xd0/0x170
[ 1363.513264] __generic_fsdax_supported+0x8c/0x500
[ 1363.513264] __bdev_dax_supported+0xd0/0x170
[ 1363.513264] __generic_fsdax_supported+0x8c/0x500
[ 1363.513264] __bdev_dax_supported+0xd0/0x170
[ 1363.513265] __generic_fsdax_supported+0x8c/0x500
[ 1363.513265] __bdev_dax_supported+0xd0/0x170
[ 1363.513265] __generic_fsdax_supported+0x8c/0x500
[ 1363.513265] __bdev_dax_supported+0xd0/0x170
[ 1363.513265] __generic_fsdax_supported+0x8c/0x500
[ 1363.513266] __bdev_dax_supported+0xd0/0x170
[ 1363.513266] __generic_fsdax_supported+0x8c/0x500
[ 1363.513266] __bdev_dax_supported+0xd0/0x170
[ 1363.513266] __generic_fsdax_supported+0x8c/0x500
[ 1363.513266] __bdev_dax_supported+0xd0/0x170
[ 1363.513266] __generic_fsdax_supported+0x8c/0x500
[ 1363.513267] __bdev_dax_supported+0xd0/0x170
[ 1363.513267] __generic_fsdax_supported+0x8c/0x500
[ 1363.513267] __bdev_dax_supported+0xd0/0x170
[ 1363.513267] __generic_fsdax_supported+0x8c/0x500
[ 1363.513267] __bdev_dax_supported+0xd0/0x170
[ 1363.513268] __generic_fsdax_supported+0x8c/0x500
[ 1363.513268] __bdev_dax_supported+0xd0/0x170
[ 1363.513268] __generic_fsdax_supported+0x8c/0x500
[ 1363.513268] __bdev_dax_supported+0xd0/0x170
[ 1363.513268] __generic_fsdax_supported+0x8c/0x500
[ 1363.513268] __bdev_dax_supported+0xd0/0x170
[ 1363.513269] __generic_fsdax_supported+0x8c/0x500
[ 1363.513269] __bdev_dax_supported+0xd0/0x170
[ 1363.513269] __generic_fsdax_supported+0x8c/0x500
[ 1363.513269] __bdev_dax_supported+0xd0/0x170
[ 1363.513269] __generic_fsdax_supported+0x8c/0x500
[ 1363.513270] __bdev_dax_supported+0xd0/0x170
[ 1363.513270] __generic_fsdax_supported+0x8c/0x500
[ 1363.513270] __bdev_dax_supported+0xd0/0x170
[ 1363.513270] __generic_fsdax_supported+0x8c/0x500
[ 1363.513270] __bdev_dax_supported+0xd0/0x170
[ 1363.513270] __generic_fsdax_supported+0x8c/0x500
[ 1363.513271] __bdev_dax_supported+0xd0/0x170
[ 1363.513271] __generic_fsdax_supported+0x8c/0x500
[ 1363.513271] __bdev_dax_supported+0xd0/0x170
[ 1363.513271] __generic_fsdax_supported+0x8c/0x500
[ 1363.513271] ? drain_obj_stock.isra.71+0x60/0x80
[ 1363.513272] ? prep_new_page+0xb1/0xe0
[ 1363.513272] __bdev_dax_supported+0xd0/0x170
[ 1363.513272] ? get_partial_node.isra.87.part.88+0x14c/0x260
[ 1363.513272] __generic_fsdax_supported+0x8c/0x500
[ 1363.513272] ? __mod_memcg_lruvec_state+0x21/0x100
[ 1363.513273] __bdev_dax_supported+0xd0/0x170
[ 1363.513273] __generic_fsdax_supported+0x8c/0x500
[ 1363.513273] __bdev_dax_supported+0xd0/0x170
[ 1363.513273] __generic_fsdax_supported+0x8c/0x500
[ 1363.513273] ? _cond_resched+0x15/0x30
[ 1363.513273] ? __kmalloc_node+0x4df/0x510
[ 1363.513274] ? crypto_create_tfm_node+0x3a/0xf0
[ 1363.513274] __bdev_dax_supported+0xd0/0x170
[ 1363.513274] ext4_fill_super+0x719/0x31c0 [ext4]
[ 1363.513274] ? bdev_name.isra.9+0x63/0xd0
[ 1363.513274] ? vsnprintf+0x37c/0x520
[ 1363.513275] ? ext4_calculate_overhead+0x490/0x490 [ext4]
[ 1363.513275] ? mount_bdev+0x185/0x1b0
[ 1363.513275] mount_bdev+0x185/0x1b0
[ 1363.513275] legacy_get_tree+0x27/0x40
[ 1363.513275] vfs_get_tree+0x25/0xb0
[ 1363.513275] path_mount+0x676/0x980
[ 1363.513276] do_mount+0x75/0x90
[ 1363.513276] __x64_sys_mount+0xc4/0xe0
[ 1363.513276] do_syscall_64+0x33/0x40
[ 1363.513276] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 1363.513276] RIP: 0033:0x7fbe9a85da8e
[ 1363.513277] Code: 48 8b 0d fd f3 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e
0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01
f0 ff ff 73 01 c3 48 8b 0d ca f3 2b 00 f7 d8 64 89 01 48
[ 1363.513277] RSP: 002b:00007fffc4274d88 EFLAGS: 00000246 ORIG_RAX:
00000000000000a5
[ 1363.513278] RAX: ffffffffffffffda RBX: 00005557f8a14460 RCX:
00007fbe9a85da8e
[ 1363.513278] RDX: 00005557f8a14640 RSI: 00005557f8a14680 RDI:
00005557f8a14660
[ 1363.513278] RBP: 00007fbe9b609184 R08: 0000000000000000 R09:
0000000000000003
[ 1363.513278] R10: 00000000c0ed0000 R11: 0000000000000246 R12:
0000000000000000
[ 1363.513279] R13: 00000000c0ed0000 R14: 00005557f8a14660 R15:
00005557f8a14640
[ 1363.513279] Modules linked in: ext4 mbcache jbd2 rpcsec_gss_krb5 auth_rpcgss
nfsv4 dns_resolver nfs lockd grace fscache rfkill sunrpc vfat fat dm_multipath
intel_rapl_msr intel_rapl_common isst_if_common skx_edac x86_pkg_temp_thermal
intel_powerclamp ipmi_ssif coretemp kvm_intel mgag200 i2c_algo_bit kvm
drm_kms_helper iTCO_wdt iTCO_vendor_support syscopyarea sysfillrect dcdbas
sysimgblt fb_sys_fops irqbypass crct10dif_pclmul drm crc32_pclmul
ghash_clmulni_intel acpi_ipmi rapl ipmi_si intel_cstate mei_me dell_smbios
i2c_i801 ipmi_devintf dax_pmem_compat intel_uncore mei wmi_bmof
dell_wmi_descripto
[ 1363.513285] Lost 29 message(s)!
[ 1364.493871] ---[ end trace d756ed97f26ed4e7 ]---
[ 1364.493872] RIP: 0010:igrab+0x14/0x50
[ 1364.493872] Code: 62 07 8c 00 85 c0 74 c6 83 f8 01 75 cd eb cd 0f 1f 80 00
00 00 00 0f 1f 44 00 00 55 48 8d af 88 00 00 00 53 48 89 fb 48 89 ef <e8> 27 65
64 00 f6 83 98 00 00 00 30 75 17 f0 ff 83 58 01 00 00 48
[ 1364.493873] RSP: 0018:ffffa700c0e0c000 EFLAGS: 00010246
[ 1364.493873] RAX: 0000000000000000 RBX: ffff95b69e415a10 RCX:
0000000000000001
[ 1364.493873] RDX: 0000000000000000 RSI: ffff95a946a406b8 RDI:
ffff95b69e415a98
[ 1364.493874] RBP: ffff95b69e415a98 R08: 0000000500000000 R09:
8080808080808080
[ 1364.493874] R10: 0000000000000000 R11: fefefefefefefeff R12:
0000000000000001
[ 1364.493874] R13: ffff95b69e415a00 R14: 0000000000000000 R15:
ffff95b79f4d3800
[ 1364.493874] FS: 00007fbe9b823080(0000) GS:ffff95b87ff80000(0000)
knlGS:0000000000000000
[ 1364.493875] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1364.493875] CR2: ffffa700c0e0bff8 CR3: 0000000ffec46002 CR4:
00000000007706e0
[ 1364.493875] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[ 1364.493875] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[ 1364.493875] PKRU: 55555554
[ 1364.493876] Kernel panic - not syncing: Fatal exception in interrupt
[ 1364.979497] Kernel Offset: 0x12600000 from 0xffffffff81000000 (relocation
range: 0xffffffff80000000-0xffffffffbfffffff)
Best Regards,
Yi Zhang
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