[Bug 248046] if_bridge(4): Panic when creating an interface: malloc(M_WAITOK) in epoch context

bugzilla-noreply at freebsd.org bugzilla-noreply at freebsd.org
Fri Jul 24 15:47:10 UTC 2020


https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=248046

--- Comment #10 from dmilith <dmilith at me.com> ---
Bug is still here. Not with ifconfig bridge0 create but on destroy.

Steps to reproduce:

ifconfig bridge0 create
ifconfig bridge0 addm em0 up
ifconfig bridge0 destroy

KP:

[33] KDB: stack backtrace:
[33] #0 0xffffffff80b975db at kdb_backtrace+0x6b
[33] #1 0xffffffff80b512b0 at vpanic+0x180
[33] #2 0xffffffff80b510b3 at panic+0x43
[33] #3 0xffffffff80b2dc84 at malloc_dbg+0xd4
[33] #4 0xffffffff80b2da21 at malloc+0x21
[33] #5 0xffffffff83134b79 at bridge_ioctl_gifs+0xb9
[33] #6 0xffffffff83136476 at bridge_ioctl+0x336
[33] #7 0xffffffff80c44c03 at ifioctl+0x763
[33] #8 0xffffffff80bb6b71 at kern_ioctl+0x301
[33] #9 0xffffffff80bb67c7 at sys_ioctl+0x127
[33] #10 0xffffffff810181a6 at amd64_syscall+0x2b6
[33] #11 0xffffffff80fefcd0 at fast_syscall_common+0x101

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