I've been busy testing kernels in Xen domUs. Just after running "xl destroy nbtest" this happened: [ 2499253.4056334] xvif37i0 GNTTABOP_copy[0] Rx -3 [ 2499253.4056334] xvif37i0 GNTTABOP_copy[0] Rx -3 [ 2499253.4056334] xvif37i0 GNTTABOP_copy[0] Rx -3 [ 2499253.4056334] xvif37i0 GNTTABOP_copy[0] Rx -3 [ 2499253.4256354] xvif37i0 GNTTABOP_copy[0] Rx -3 [ 2499254.1256770] xvif37i0 GNTTABOP_copy[0] Rx -3 [ 2499254.1256770] xvif37i0 GNTTABOP_copy[0] Rx -3 [ 2499256.1658017] xvif37i0 GNTTABOP_copy[0] Rx -3 [ 2499256.1658017] xvif37i0 GNTTABOP_copy[0] Rx -3 [ 2499258.1359215] xvif37i0 GNTTABOP_copy[0] Rx -3 [ 2499258.1359215] xvif37i0 GNTTABOP_copy[0] Rx -3 [ 2499260.1560424] xvif37i0: disconnecting [ 2499260.1560424] xbd backend: detach device vg0-nbtest.pkg for domain 37 [ 2499260.1660445] xbd backend: detach device vg0-nbtest.var for domain 37 [ 2499260.1660445] xbd backend: detach device vg0-nbtest.swap for domain 37 [ 2499260.1660445] xbd backend: detach device vg0-nbtest.root for domain 37 [ 2499262.0061528] xbd backend: detach device vnd0d for domain 37 [ 2499264.9263322] panic: kernel diagnostic assertion "kpreempt_disabled()" failed: file "/build/src/sys/arch/x86/x86/pmap.c", line 2431 [ 2499264.9263322] cpu0: Begin traceback... [ 2499264.9263322] vpanic() at netbsd:vpanic+0x14a [ 2499264.9263322] kern_assert() at netbsd:kern_assert+0x48 [ 2499264.9263322] pmap_free_ptp() at netbsd:pmap_free_ptp+0x3b1 [ 2499264.9263322] pmap_enter_ma() at netbsd:pmap_enter_ma+0xebe [ 2499264.9263322] privcmd_ioctl() at netbsd:privcmd_ioctl+0xa8c [ 2499264.9263322] kernfs_try_fileop() at netbsd:kernfs_try_fileop+0x5c [ 2499264.9263322] VOP_IOCTL() at netbsd:VOP_IOCTL+0x5d [ 2499264.9263322] vn_ioctl() at netbsd:vn_ioctl+0xad [ 2499264.9263322] sys_ioctl() at netbsd:sys_ioctl+0x555 [ 2499264.9263322] syscall() at netbsd:syscall+0x9c [ 2499264.9263322] --- syscall (number 54) --- [ 2499264.9263322] netbsd:syscall+0x9c: [ 2499264.9263322] cpu0: End traceback... [ 2499264.9263322] fatal breakpoint trap in supervisor mode [ 2499264.9263322] trap type 1 code 0 rip 0xffffffff8023e93d cs 0xe030 rflags 0x202 cr2 0x70153d533000 ilevel 0 rsp 0xffffc580ef7a4950 [ 2499264.9263322] curlwp 0xffffc58012291240 pid 12621.12621 lowest kstack 0xffffc580ef7a02c0 Stopped in pid 12621.12621 (xl) at netbsd:breakpoint+0x5: leave ds 4960 es 4910 fs 4950 gs 10 rdi 0 rsi 1 rbp ffffc580ef7a4950 rbx ffffc58003ad6f40 rdx 2 rcx 0 rax 0 r8 ffffc58003ad6f40 r9 1 r10 0 r11 fffffffe r12 104 r13 ffffffff80c9d620 ostype+0x148 r14 ffffc580ef7a4998 r15 701535f6e000 rip ffffffff8023e93d breakpoint+0x5 cs e030 rflags 202 rsp ffffc580ef7a4950 ss e02b netbsd:breakpoint+0x5: leave db{0}> (XEN) [2021-12-05 19:27:12.065] Watchdog timer fired for domain 0 (XEN) [2021-12-05 19:27:12.065] Hardware Dom0 shutdown: watchdog rebooting machine This is an amd64 system running a 9.99.81 kernel and Xen 4.13.2nb2. Is it worth a PR? -- Greg A. Woods <gwoods%acm.org@localhost> Kelowna, BC +1 250 762-7675 RoboHack <woods%robohack.ca@localhost> Planix, Inc. <woods%planix.com@localhost> Avoncote Farms <woods%avoncote.ca@localhost>
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