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November 2024

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New BUG() call and stack-trace seen in the wild on 0.4.8.13 exit relay.
by George Hartley 16 Nov '24

16 Nov '24

Hi, I noticed the following when checking journalctl logs from Tor: > Nov 13 19:51:10 matrix tor[615]: Nov 13 19:51:10.000 [warn] tor_bug_occurred_(): Bug: src/core/or/relay.c:2354: connection_edge_package_raw_inbuf: Non-fatal assertion !(conn->base_.marked_for_close) failed. (on Tor 0.4.8.13 )Nov 13 19:51:10 matrix tor[615]: Nov 13 19:51:10.000 [warn] Bug: Tor 0.4.8.13: Non-fatal assertion !(conn->base_.marked_for_close) failed in connection_edge_package_raw_inbuf at src/core/or/… [View More]relay.c:2354. Stack trace: (on Tor 0.4.8.13 ) > Nov 13 19:51:10 matrix tor[615]: Nov 13 19:51:10.000 [warn] Bug: /usr/bin/tor(+0x1c8c5d) [0x62048e493c5d] (on Tor 0.4.8.13 ) > Nov 13 19:51:10 matrix tor[615]: Nov 13 19:51:10.000 [warn] Bug: /usr/bin/tor(+0x94325) [0x62048e35f325] (on Tor 0.4.8.13 ) > Nov 13 19:51:10 matrix tor[615]: Nov 13 19:51:10.000 [warn] Bug: /usr/bin/tor(+0x4335f) [0x62048e30e35f] (on Tor 0.4.8.13 ) > Nov 13 19:51:10 matrix tor[615]: Nov 13 19:51:10.000 [warn] Bug: /usr/bin/tor(+0x11afa6) [0x62048e3e5fa6] (on Tor 0.4.8.13 ) > Nov 13 19:51:10 matrix tor[615]: Nov 13 19:51:10.000 [warn] Bug: /usr/bin/tor(+0x10e8a2) [0x62048e3d98a2] (on Tor 0.4.8.13 ) > Nov 13 19:51:10 matrix tor[615]: Nov 13 19:51:10.000 [warn] Bug: /usr/lib/libevent-2.1.so.7(+0x22b42) [0x7488c6f57b42] (on Tor 0.4.8.13 ) > Nov 13 19:51:10 matrix tor[615]: Nov 13 19:51:10.000 [warn] Bug: /usr/lib/libevent-2.1.so.7(event_base_loop+0x4ff) [0x7488c6f593af] (on Tor 0.4.8.13 ) > Nov 13 19:51:10 matrix tor[615]: Nov 13 19:51:10.000 [warn] Bug: /usr/bin/tor(+0xd3da) [0x62048e2d83da] (on Tor 0.4.8.13 ) > Nov 13 19:51:10 matrix tor[615]: Nov 13 19:51:10.000 [warn] Bug: /usr/bin/tor(+0xa947) [0x62048e2d5947] (on Tor 0.4.8.13 ) > Nov 13 19:51:10 matrix tor[615]: Nov 13 19:51:10.000 [warn] Bug: /usr/lib/libc.so.6(+0x25e08) [0x7488c6527e08] (on Tor 0.4.8.13 ) > Nov 13 19:51:10 matrix tor[615]: Nov 13 19:51:10.000 [warn] Bug: /usr/lib/libc.so.6(__libc_start_main+0x8c) [0x7488c6527ecc] (on Tor 0.4.8.13 ) > Nov 13 19:51:10 matrix tor[615]: Nov 13 19:51:10.000 [warn] Bug: /usr/bin/tor(+0xba25) [0x62048e2d6a25] (on Tor 0.4.8.13 ) > Nov 13 19:51:10 matrix tor[615]: Nov 13 19:51:10.000 [warn] connection_edge_package_raw_inbuf(): Bug: called on conn that's already marked for close at src/core/or/relay.c:1870. (on Tor 0.4.8.13 ) I didn't have the time to actually look at the function in question, and I also left my Gitlab authenticator device (fully encrypted) at a friends / colleagues place, otherwise I would have likely opened a Gitlab ticket, given I figured out the actual bug behind it, if any. However, as I am unable right now and also not at my usual workplace, I included tor-dev in the recipients. Thanks. -GH [View Less]

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