assert failed: dq->dq_ump->um_quotas[dq->dq_type] != vp

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 3c8de622a14b sys/lock.h: Need <sys/systm.h> for nullop.
git tree: netbsd
console output: https://syzkaller.appspot.com/x/log.txt?x=1039dc02080000
kernel config: https://syzkaller.appspot.com/x/.config?x=fab579639ba4bf0a
dashboard link: https://syzkaller.appspot.com/bug?extid=c78e3e7ebbd669d9c260
compiler: g++ (Debian 10.2.1-6) 10.2.1 20210110

Unfortunately, I don't have any reproducer for this issue yet.

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+c78e3e...@syzkaller.appspotmail.com

[ 603.4632380] panic: kernel diagnostic assertion "dq->dq_ump->um_quotas[dq->dq_type] != vp" failed: file "/syzkaller/managers/ci2-netbsd/kernel/sys/ufs/ufs/ufs_quota.c", line 978
[ 603.4832271] cpu1: Begin traceback...
[ 603.4932272] vpanic() at netbsd:vpanic+0x282 sys/kern/subr_prf.c:293
[ 603.5332264] _sub_D_65535_0() at netbsd:_sub_D_65535_0+-0x34c4
[ 603.5632265] dqflush() at netbsd:dqflush+0xef sys/ufs/ufs/ufs_quota.c:978
[ 603.5932267] quota1_handle_cmd_quotaoff() at netbsd:quota1_handle_cmd_quotaoff+0x2b2 sys/ufs/ufs/ufs_quota1.c:462
[ 603.6332259] quota1_handle_cmd_quotaon() at netbsd:quota1_handle_cmd_quotaon+0x221 sys/ufs/ufs/ufs_quota1.c:348
[ 603.6632273] quota_handle_cmd() at netbsd:quota_handle_cmd+0xb35 quota_handle_cmd_quotaon sys/ufs/ufs/ufs_quota.c:648 [inline]
[ 603.6632273] quota_handle_cmd() at netbsd:quota_handle_cmd+0xb35 sys/ufs/ufs/ufs_quota.c:187
[ 603.7032255] ufs_quotactl() at netbsd:ufs_quotactl+0x66 sys/ufs/ufs/ufs_vfsops.c:142
[ 603.7332269] VFS_QUOTACTL() at netbsd:VFS_QUOTACTL+0x68 sys/kern/vfs_subr.c:1449
[ 603.7732253] vfs_quotactl_quotaon() at netbsd:vfs_quotactl_quotaon+0xa0 sys/kern/vfs_quotactl.c:177
[ 603.8032251] compat_50_sys_quotactl() at netbsd:compat_50_sys_quotactl+0x512 sys/compat/common/compat_50_quota.c:96
[ 603.8332270] sys___syscall() at netbsd:sys___syscall+0x10e sy_call sys/sys/syscallvar.h:65 [inline]
[ 603.8332270] sys___syscall() at netbsd:sys___syscall+0x10e sys/kern/sys_syscall.c:90
[ 603.8732253] syscall() at netbsd:syscall+0x25a sy_call sys/sys/syscallvar.h:65 [inline]
[ 603.8732253] syscall() at netbsd:syscall+0x25a sy_invoke sys/sys/syscallvar.h:94 [inline]
[ 603.8732253] syscall() at netbsd:syscall+0x25a sys/arch/x86/x86/syscall.c:138
[ 603.8832251] --- syscall (number 148 via SYS_syscall) ---
[ 603.8932254] netbsd:syscall+0x25a:
[ 603.9032273] cpu1: End traceback...
[ 603.9032273] fatal breakpoint trap in supervisor mode
[ 603.9132267] trap type 1 code 0 rip 0xffffffff80220a4d cs 0x8 rflags 0x286 cr2 0x7a033cb64789 ilevel 0 rsp 0xffffad01adbd76f0
[ 603.9232245] curlwp 0xffffad00148ed940 pid 16623.12543 lowest kstack 0xffffad01adbd02c0
[ 603.9232245] uvm_fault(0xffffad0014358640, 0xffff900000000000, 1) -> e
[ 603.9232245] fatal page fault in supervisor mode
[ 603.9232245] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffad01adbd7210
[ 603.9232245] curlwp 0xffffad00148ed940 pid 16623.12543 lowest kstack 0xffffad01adbd02c0
kernel: page fault trap, code=0
[ 603.9232245] uvm_fault(0xffffad0014358640, 0xffff900000000000, 1) -> e
[ 603.9232245] fatal page fault in supervisor mode
[ 603.9232245] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffad01adbd6d30
[ 603.9232245] curlwp 0xffffad00148ed940 pid 16623.12543 lowest kstack 0xffffad01adbd02c0
kernel: page fault trap, code=0
[ 603.9232245] uvm_fault(0xffffad0014358640, 0xffff900000000000, 1) -> e
[ 603.9232245] fatal page fault in supervisor mode
[ 603.9232245] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffad01adbd6850
[ 603.9232245] curlwp 0xffffad00148ed940 pid 16623.12543 lowest kstack 0xffffad01adbd02c0
kernel: page fault trap, code=0
[ 603.9232245] uvm_fault(0xffffad0014358640, 0xffff900000000000, 1) -> e
[ 603.9232245] fatal page fault in supervisor mode
[ 603.9232245] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffad01adbd6370
[ 603.9232245] curlwp 0xffffad00148ed940 pid 16623.12543 lowest kstack 0xffffad01adbd02c0
kernel: page fault trap, code=0
[ 603.9232245] uvm_fault(0xffffad0014358640, 0xffff900000000000, 1) -> e
[ 603.9232245] fatal page fault in supervisor mode
[ 603.9232245] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffad01adbd5e90
[ 603.9232245] curlwp 0xffffad00148ed940 pid 16623.12543 lowest kstack 0xffffad01adbd02c0
kernel: page fault trap, code=0
[ 603.9232245] uvm_fault(0xffffad0014358640, 0xffff900000000000, 1) -> e
[ 603.9232245] fatal page fault in supervisor mode
[ 603.9232245] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffad01adbd59b0
[ 603.9232245] curlwp 0xffffad00148ed940 pid 16623.12543 lowest kstack 0xffffad01adbd02c0
kernel: page fault trap, code=0
[ 603.9232245] uvm_fault(0xffffad0014358640, 0xffff900000000000, 1) -> e
[ 603.9232245] fatal page fault in supervisor mode
[ 603.9232245] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffad01adbd54d0
[ 603.9232245] curlwp 0xffffad00148ed940 pid 16623.12543 lowest kstack 0xffffad01adbd02c0
kernel: page fault trap, code=0
[ 603.9232245] uvm_fault(0xffffad0014358640, 0xffff900000000000, 1) -> e
[ 603.9232245] fatal page fault in supervisor mode
[ 603.9232245] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffad01adbd4ff0
[ 603.9232245] curlwp 0xffffad00148ed940 pid 16623.12543 lowest kstack 0xffffad01adbd02c0
kernel: page fault trap, code=0
[ 603.9232245] uvm_fault(0xffffad0014358640, 0xffff900000000000, 1) -> e
[ 603.9232245] fatal page fault in supervisor mode
[ 603.9232245] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffad01adbd4b10
[ 603.9232245] curlwp 0xffffad00148ed940 pid 16623.12543 lowest kstack 0xffffad01adbd02c0
kernel: page fault trap, code=0
[ 603.9232245] uvm_fault(0xffffad0014358640, 0xffff900000000000, 1) -> e
[ 603.9232245] fatal page fault in supervisor mode
[ 603.9232245] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffad01adbd4630
[ 603.9232245] curlwp 0xffffad00148ed940 pid 16623.12543 lowest kstack 0xffffad01adbd02c0
kernel: page fault trap, code=0
[ 603.9232245] uvm_fault(0xffffad0014358640, 0xffff900000000000, 1) -> e
[ 603.9232245] fatal page fault in supervisor mode
[ 603.9232245] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffad01adbd4150
[ 603.9232245] curlwp 0xffffad00148ed940 pid 16623.12543 lowest kstack 0xffffad01adbd02c0
kernel: page fault trap, code=0
[ 603.9232245] uvm_fault(0xffffad0014358640, 0xffff900000000000, 1) -> e
[ 603.9232245] fatal page fault in supervisor mode
[ 603.9232245] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffad01adbd3c70
[ 603.9232245] curlwp 0xffffad00148ed940 pid 16623.12543 lowest kstack 0xffffad01adbd02c0
kernel: page fault trap, code=0
[ 603.9232245] uvm_fault(0xffffad0014358640, 0xffff900000000000, 1) -> e
[ 603.9232245] fatal page fault in supervisor mode
[ 603.9232245] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffad01adbd3790
[ 603.9232245] curlwp 0xffffad00148ed940 pid 16623.12543 lowest kstack 0xffffad01adbd02c0
kernel: page fault trap, code=0
[ 603.9232245] uvm_fault(0xffffad0014358640, 0xffff900000000000, 1) -> e
[ 603.9232245] fatal page fault in supervisor mode
[ 603.9232245] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffad01adbd32b0
[ 603.9232245] curlwp 0xffffad00148ed940 pid 16623.12543 lowest kstack 0xffffad01adbd02c0
kernel: page fault trap, code=0
[ 603.9232245] uvm_fault(0xffffad0014358640, 0xffff900000000000, 1) -> e
[ 603.9232245] fatal page fault in supervisor mode
[ 603.9232245] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffad01adbd2dd0
[ 603.9232245] curlwp 0xffffad00148ed940 pid 16623.12543 lowest kstack 0xffffad01adbd02c0
kernel: page fault trap, code=0
[ 603.9232245] uvm_fault(0xffffad0014358640, 0xffff900000000000, 1) -> e
[ 603.9232245] fatal page fault in supervisor mode
[ 603.9232245] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffad01adbd28f0
[ 603.9232245] curlwp 0xffffad00148ed940 pid 16623.12543 lowest kstack 0xffffad01adbd02c0
[ 603.9232245] fatal double fault in supervisor mode
[ 603.9232245] trap type 13 code 0 rip 0xffffffff81bc3437 cs 0x8 rflags 0x10282 cr2 0xffffad01adbd1f18 ilevel 0x8 rsp 0xffffad01adbd1f20
[ 603.9232245] curlwp 0xffffad00148ed940 pid 16623.12543 lowest kstack 0xffffad01adbd02c0
kernel: double fault trap, code=0
[ 603.9232245] uvm_fault(0xffffad0014358640, 0xffff900000000000, 1) -> e
[ 603.9232245] fatal page fault in supervisor mode
[ 603.9232245] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10083 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffad0184debc40
[ 603.9232245] curlwp 0xffffad00148ed940 pid 16623.12543 lowest kstack 0xffffad01adbd02c0
kernel: page fault trap, code=0
[ 603.9232245] uvm_fault(0xffffad0014358640, 0xffff900000000000, 1) -> e
[ 603.9232245] fatal page fault in supervisor mode
[ 603.9232245] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffad0184deb760
[ 603.9232245] curlwp 0xffffad00148ed940 pid 16623.12543 lowest kstack 0xffffad01adbd02c0
kernel: page fault trap, code=0
[ 603.9232245] uvm_fault(0xffffad0014358640, 0xffff900000000000, 1) -> e
[ 603.9232245] fatal page fault in supervisor mode
[ 603.9232245] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffad0184deb280
[ 603.9232245] curlwp 0xffffad00148ed940 pid 16623.12543 lowest kstack 0xffffad01adbd02c0
kernel: page fault trap, code=0
[ 603.9232245] uvm_fault(0xffffad0014358640, 0xffff900000000000, 1) -> e
[ 603.9232245] fatal page fault in supervisor mode
[ 603.9232245] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffad0184deada0
[ 603.9232245] curlwp 0xffffad00148ed940 pid 16623.12543 lowest kstack 0xffffad01adbd02c0
kernel: page fault trap, code=0
[ 603.9232245] uvm_fault(0xffffad0014358640, 0xffff900000000000, 1) -> e
[ 603.9232245] fatal page fault in supervisor mode
[ 603.9232245] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffad0184dea8c0
[ 603.9232245] curlwp 0xffffad00148ed940 pid 16623.12543 lowest kstack 0xffffad01adbd02c0
kernel: page fault trap, code=0
[ 603.9232245] uvm_fault(0xffffad0014358640, 0xffff900000000000, 1) -> e
[ 603.9232245] fatal page fault in supervisor mode
[ 603.9232245] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffad0184dea3e0
[ 603.9232245] curlwp 0xffffad00148ed940 pid 16623.12543 lowest kstack 0xffffad01adbd02c0
kernel: page fault trap, code=0
[ 603.9232245] uvm_fault(0xffffad0014358640, 0xffff900000000000, 1) -> e
[ 603.9232245] fatal page fault in supervisor mode
[ 603.9232245] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffad0184de9f00
[ 603.9232245] curlwp 0xffffad00148ed940 pid 16623.12543 lowest kstack 0xffffad01adbd02c0
kernel: page fault trap, code=0
[ 603.9232245] uvm_fault(0xffffad0014358640, 0xffff900000000000, 1) -> e
[ 603.9232245] fatal page fault in supervisor mode
[ 603.9232245] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffad0184de9a20
[ 603.9232245] curlwp 0xffffad00148ed940 pid 16623.12543 lowest kstack 0xffffad01adbd02c0
kernel: page fault trap, code=0
[ 603.9232245] uvm_fault(0xffffad0014358640, 0xffff900000000000, 1) -> e
[ 603.9232245] fatal page fault in supervisor mode
[ 603.9232245] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffad0184de9540
[ 603.9232245] curlwp 0xffffad00148ed940 pid 16623.12543 lowest kstack 0xffffad01adbd02c0
kernel: page fault trap, code=0
[ 603.9232245] uvm_fault(0xffffad0014358640, 0xffff900000000000, 1) -> e
[ 603.9232245] fatal page fault in supervisor mode
[ 603.9232245] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffad0184de9060
[ 603.9232245] curlwp 0xffffad00148ed940 pid 16623.12543 lowest kstack 0xffffad01adbd02c0
kernel: page fault trap, code=0
[ 603.9232245] uvm_fault(0xffffad0014358640, 0xffff900000000000, 1) -> e
[ 603.9232245] fatal page fault in supervisor mode
[ 603.9232245] trap type 6 code 0 rip 0xffffffff81b840cb cs 0x8 rflags 0x10283 cr2 0xffff90000000003d ilevel 0x8 rsp 0xffffad0184de8b80
[ 603.9232245] curlwp 0xffffad00148ed940 pid 16623.12543 lowest kstack 0xffffad01adbd02c0
kernel: page fault trap, code=0
SeaBIOS (version 1.8.2-google)
Total RAM Size = 0x0000000200000000 = 8192 MiB
CPUs found: 2 Max CPUs supported: 2
SeaBIOS (version 1.8.2-google)
Machine UUID 4c614fef-0d9b-71e9-867c-db19c1491eb8
found virtio-scsi at 0:3
virtio-scsi vendor='Google' product='PersistentDisk' rev='1' type=0 removable=0
virtio-scsi blksize=512 sectors=4194304 = 2048 MiB
drive 0x000f2700: PCHS=0/0/0 translation=lba LCHS=520/128/63 s=4194304
Sending Seabios boot VM event.
Booting from Hard Disk 0...

>> NetBSD/x86 BIOS Boot, Revision 5.11 (Thu Jun 11 19:20:47 UTC 2020) (from NetBSD 9.99.65)
>> Memory: 639/3144640 k

1. Boot normally
2. Boot single user
3. Drop to boot prompt

Choose an option; RETURN for default; SPACE to stop countdown.
Option 1 will be chosen in 5 seconds. 4 seconds. 3 seconds. 2 seconds. 1 seconds. 0 seconds. 0 seconds.
command(s): rndseed /var/db/entropy-file;boot
default boot twice, skipping...
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\ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | +1518336/ - \ | / - [1518432\ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | +991228/ - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | / - \ | ]=0x3665658


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Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.