kern/59152: Panic in genfs(?) onn HEAD amd64

[paul%whooppee.com@localhost]

>Number:         59152
>Category:       kern
>Synopsis:       kernel panic on current - genfs ?
>Confidential:   no
>Severity:       serious
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Mar 07 22:35:00 +0000 2025
>Originator:     Paul Goyette
>Release:        NetBSD 10.99.12
>Organization:
+---------------------+--------------------------+----------------------+
| Paul Goyette (.sig) | PGP Key fingerprint:     | E-mail addresses:    |
| (Retired)           | 1B11 1849 721C 56C8 F63A | paul%whooppee.com@localhost    |
| Software Developer  | 6E2E 05FD 15CE 9F2D 5102 | pgoyette%netbsd.org@localhost  |
| & Network Engineer  |                          | pgoyette99%gmail.com@localhost |
+---------------------+--------------------------+----------------------+
>Environment:
	
	
System: NetBSD speedy.whooppee.com 10.99.12 NetBSD 10.99.12 (SPEEDY 2025-02-09 23:04:47 UTC) #0: Mon Feb 10 04:36:23 UTC 2025 paul%speedy.whooppee.com@localhost:/build/netbsd-local/obj/amd64/sys/arch/amd64/compile/SPEEDY amd64
Architecture: x86_64
Machine: amd64
>Description:
When attempting to audioplay(1) a file located on a ntfs file system, I
get a repeatable crash in genfs. Backtrace is always 

[   260.565864] panic: kernel diagnostic assertion "(flags & UFP_NOBUSY) != 0 || rw_write_held(uobj->vmobjlock)" failed: file "/build/netbsd-local/src_ro/sys/uvm/uvm_vnode.c", line 304 
[   260.565864] cpu1: Begin traceback...
[   260.565864] vpanic() at netbsd:vpanic+0x171
[   260.565864] kern_assert() at netbsd:kern_assert+0x4b
[   260.565864] indpages() at netbsd:uvn_findpages+0xc9
[   260.565864] genfs_com39] VOP_GETPAGES() at netbsd:VOP_GETPAGES+0x80
[   260.565864] uv() at netbsd:uvm_fault_internal+0xcd4
[   260.565864] trap() at n58639] eab89a:
[   260.565864] cpu1: End traceback...
[   260.565864] fatal breakpoint trap in supervisor mode
[   260.565864] trap type 1 code 0 rip 0xffffffff80232825 cs 0x8 rflags 0x202 cr2 0x7c3581c19000 ilevel 0 rsp 0xffffdb240e914940
[   260.565864] curlwp 0xffff9a6077498000 pid 7741.7741 lowest kstack 0xffffdb240e91x5:	leave	
breakpoint() at netbsd:breakpoint+0x5
vpanic() at netbsd:vpanic+0x171
kern_assert() at netbsd:kern_assert+0x4b
uvn_findpage() at netbsd:uvn_findpage+0x208
uvn_findpages() at netbsd:uvn_findpages+0xc9
genfs_compat_getpages() at netbsd:genfs_compat_getpages+0x1ac
VOP_GETPAGES() at netbsd:VOP_GETPAGES+0x80
uvn_fault_internal+0xcd4
trap() at netbsd:trap+0x3a6
[   260.565864]          1
fs          180
gs          48f0
rdi         0
rsi   0	ostype+0x403a7
rdx         1
rcx         ffffffffffffff
rax   r11         0
r12         ffffdb240e914988
r13         104
r14         ffff9a609f5417c0
r15         ffffdb240e914e50
rip         ffffffff80232825	breakpoint+0x5
cs          8
rflags      202
r	leave	

Sorry, crash dump is not available.  (Separate PR coming)
	
>How-To-Repeat:
run audioplay on a file located on an ntfs file system.  Note
that mpg123 does not cause the crash.
>Fix:
please
	

>Unformatted: