| Summary: | [POWERPC] Kernel page fault with the following non-sleepable locks held while copying files | ||
|---|---|---|---|
| Product: | Base System | Reporter: | Leonardo Bianconi <leonardo.bianconi> |
| Component: | kern | Assignee: | freebsd-ppc (Nobody) <ppc> |
| Status: | New --- | ||
| Severity: | Affects Some People | CC: | alfredo |
| Priority: | --- | Keywords: | crash |
| Version: | CURRENT | ||
| Hardware: | powerpc | ||
| OS: | Any | ||
I faced a kernel panic while transferring large files in parallel through the network in a PowerPC BE virtual machine. My network was configured with virtio legacy. Command executed: scp <user>@<source machine ip>:<file> ./ & scp <user>@<source machine ip>:<file> ./copy2/ Error output: Kernel page fault with the following non-sleepable locks held: exclusive sleep mutex vtnet0-tx0 (vtnet0-tx0) r = 0 (0x44d0100) locked @ /usr/src/sys/dev/virtio/network/if_vtnet.c:2760 stack backtrace: #0 0xc0000000008098dc at witness_debugger+0xa4 #1 0xc00000000080af34 at witness_warn+0x498 #2 0xc000000000bb26b8 at trap_pfault+0x274 #3 0xc000000000bb12bc at trap+0x140 #4 0xc000000000ba5438 at powerpc_interrupt+0x1cc fatal kernel trap: exception = 0x300 (data storage interrupt) virtual address = 0xdeadc0dedeadc0de dsisr = 0x40000000 srr0 = 0xc000000000b50e10 (0xb50e10) srr1 = 0x8000000000009032 current msr = 0x8000000000009032 lr = 0xc00000000083c0ec (0x83c0ec) frame = 0xc0080000016d2190 curthread = 0xc008000003890b80 pid = 0, comm = vtnet0 txq 0 panic: data storage interrupt trap cpuid = 3 time = 1614688096 KDB: stack backtrace: 0xc0080000016d1cf0: at kdb_backtrace+0x60 0xc0080000016d1e00: at vpanic+0x1e0 0xc0080000016d1eb0: at panic+0x40 0xc0080000016d1ee0: at trap_pfault+0x300 0xc0080000016d1f90: at trap+0x140 0xc0080000016d20d0: at powerpc_interrupt+0x1cc 0xc0080000016d2160: kernel DSI read trap @ 0xdeadc0dedeadc0de by memcpy+0x58: srr1=0x8000000000009032 r1=0xc0080000016d2410 cr=0x44000c80 xer=0x20040000 ctr=0x3c r2=0xc000000001383000 sr=0x40000000 frame=0xc0080000016d2190 0xc0080000016d2410: at m_pullup+0x250 0xc0080000016d24b0: at ether_vlanencap_proto+0x11c 0xc0080000016d24f0: at vtnet_txq_encap+0xb8 0xc0080000016d25d0: at vtnet_txq_mq_start_locked+0x16c 0xc0080000016d2690: at vtnet_txq_tq_deferred+0x6c 0xc0080000016d26d0: at taskqueue_run_locked+0xfc 0xc0080000016d27d0: at taskqueue_thread_loop+0xd4 0xc0080000016d2820: at fork_exit+0xc4 0xc0080000016d28c0: at fork_trampoline+0x18 0xc0080000016d28f0: at -0x4 KDB: enter: panic [ thread pid 0 tid 100147 ]