https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=198789
Bug ID: 198789
Summary: Panic while mounting an NANDFS filesystem
Product: Base System
Version: 11.0-CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Many People
Priority: ---
Component: kern
Assignee: freebsd-bugs@FreeBSD.org
Reporter: stefan.ber...@imoriath.com
I tried to use NANDFS instead of UFS to keep an SD-Card longer alife.
I have tested it on 10.1 -> amd64 (seems working)
and 11.0 -> amd64 and armv6 (both making panic)
root@test:~ # dd if=/dev/zero of=/nandtest bs=1M count=1024
1024+0 records in
1024+0 records out
1073741824 bytes transfered in 17.864829 secs (63667521 bytes/sec)
root@test:~ # mdconfig -a -t vnode /nandtest
md0
root@test:~ # newfs_nandfs /dev/md0
filesystem parametsers:
blocksize: 0x1000 sectorsize: 0x200
erasesize: 0x20000 mediasize: 0x40000000
segment size: 0x20000 blocks per segment: 0x20
filesystem created successfully
total segments: 0x1ffa valid segments: 0x1ffa
total space: 1023 MB free: 1023 MB
root@test:~ # kldload nandfs
root@test:~ # mount -t nandfs /dev/md0
WARNING: NANDFS is considered to be a highly experimental feature in FreeBSD
NULL mp in getnewvnode()
NULL mp in getnewvnode()
NULL mp in getnewvnode()
NULL mp in getnewvnode()
panic: bsize == 0, check bo->bo_size
cpuid = 2
KDB: stack backtrace:
db_trace_self_wrapper() ad db_trace_self_wrapper+0x2b/frame 0xfffffe01207f2220
vpanic() at vpanic+0x189/frame 0xfffffe01207f20a0
kassert_panic() at kassert_panic+0x132/frame 0xfffffe01207f2310
getblk() at getblk+0x850/frame 0xfffffe01207f23d0
breadn_flags() at dreadn_flags+0x2d/frame 0xfffffe01207f2410
nandfs_bread() at nandfs_bread+0x6e/frame 0xfffffe01207f2460
nandfs_get_seg_stat() at nandfs_get_seg_stat+0xa7/frame 0xfffffe01207f24e0
nandfs_mount() at nandfs_mount+0x1f62/frame 0xfffffe01207f26d0
vfs_donmount() at vfs_donmount+0x1330/frame 0xfffffe01207f2aa0
sys_nmount() at sys_nmount+0x72/frame 0xfffffe01207f2ae0
amd64_syscall() at amd64_syscall+0x27f/frame 0xfffffe01207f2bf0
Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe01207f2bf0
--- syscall (378, FreeBSD ELF64, sys_nmount) rip = 0x800aab9ca, rsb =
0x7fffffffdb58, rbp = 0x7fffffffffe0c0 ---
KDB: enter: panic
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