I was mad at myself for losing the strace from the other thread, so I
re-enabled a broken slave zone and recreated the problem (easily).
Here's the tail of an strace from the thread that seems to be hanging on
the ipsec ip, just as it stops responding:
futex(0xb7a8f0f0, FUTEX_WAIT, 943, NULL) = 0
futex(0xb7a8f0b8, FUTEX_WAIT, 2, NULL)= -1 EAGAIN (Resource temporarily
unavailable)
futex(0xb7a8f0b8, FUTEX_WAKE, 1)= 0
gettimeofday({1198079742, 934859}, NULL) = 0
gettimeofday({1198079742, 935156}, NULL) = 0
gettimeofday({1198079742, 935487}, NULL) = 0
futex(0xb7a8f0f0, FUTEX_WAIT, 945, NULL) = 0
futex(0xb7a8f0b8, FUTEX_WAIT, 2, NULL)= -1 EAGAIN (Resource temporarily
unavailable)
futex(0xb7a8f0b8, FUTEX_WAKE, 1)= 0
gettimeofday({1198079742, 948815}, NULL) = 0
gettimeofday({1198079742, 949291}, NULL) = 0
gettimeofday({1198079742, 949505}, NULL) = 0
futex(0xb7a8f0f0, FUTEX_WAIT, 947, NULL) = 0
futex(0xb7a8f0b8, FUTEX_WAIT, 2, NULL)= -1 EAGAIN (Resource temporarily
unavailable)
futex(0xb7a8f0b8, FUTEX_WAKE, 1)= 0
gettimeofday({1198079745, 920414}, NULL) = 0
gettimeofday({1198079745, 920873}, NULL) = 0
gettimeofday({1198079745, 921082}, NULL) = 0
gettimeofday({1198079745, 921309}, NULL) = 0
futex(0xb7a91044, 0x5 /* FUTEX_??? */, 1) = 1
futex(0xb7a91010, FUTEX_WAKE, 1) = 0
gettimeofday({1198079745, 922263}, NULL) = 0
gettimeofday({1198079745, 923564}, NULL) = 0
gettimeofday({1198079745, 923935}, NULL) = 0
sendmsg(32, {msg_name(16)={sa_family=AF_INET, sin_port=htons(53),
sin_addr=inet_addr(192.168.5.5)},
msg_iov(1)=[{+\305\0\0\0\1\0\0\0\0\0\1\3glv\3lan\0\0\6\0\1\0\0)\10\0...,
36}], msg_controllen=0, msg_flags=0}, 0
And here's the tail of a final thread, which also seems to stop doing anything
during the hang. (The output of the third thread, the one that seems to loop
forever, is in the original post):
read(5, 0xb6a8b174, 8) = -1 EAGAIN (Resource temporarily
unavailable)
select(36, [5 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35], [], NULL, NULL)
= 1 (in [22])
futex(0xb7a8f0f0, 0x5 /* FUTEX_??? */, 1) = 1
futex(0xb7a8f0b8, FUTEX_WAKE, 1) = 0
select(36, [5 20 21 23 24 25 26 27 28 29 30 31 32 33 34 35], [], NULL, NULL) =
1 (in [5])
read(5, \26\0\0\0\375\377\377\377, 8) = 8
read(5, 0xb6a8b174, 8) = -1 EAGAIN (Resource temporarily
unavailable)
select(36, [5 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35], [], NULL, NULL)
= 1 (in [32])
futex(0xb7a8f0f0, 0x5 /* FUTEX_??? */, 1) = 1
futex(0xb7a8f0b8, FUTEX_WAKE, 1) = 0
select(36, [5 20 21 22 23 24 25 26 27 28 29 30 31 33 34 35], [], NULL, NULL) =
1 (in [5])
read(5, \0\0\0\375\377\377\377, 8) = 8
read(5, 0xb6a8b174, 8) = -1 EAGAIN (Resource temporarily
unavailable)
select(36, [5 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35], [], NULL, NULL)
= 1 (in [32])
futex(0xb7a8f0f0, 0x5 /* FUTEX_??? */, 1) = 1
futex(0xb7a8f0b8, FUTEX_WAKE, 1) = 0
select(36, [5 20 21 22 23 24 25 26 27 28 29 30 31 33 34 35], [], NULL, NULL) =
1 (in [5])
read(5, \0\0\0\375\377\377\377, 8) = 8
read(5, 0xb6a8b174, 8) = -1 EAGAIN (Resource temporarily
unavailable)
select(36, [5 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35], [], NULL, NULL)
= 1 (in [34])
select(36, [5 20 21 22 23 24 25 26 27 28 29 30 31 32 33 35], [], NULL, NULL) =
1 (in [35])
select(36, [5 20 21 22 23 24 25 26 27 28 29 30 31 32 33], [], NULL, NULL) = 1
(in [22])
select(36, [5 20 21 23 24 25 26 27 28 29 30 31 32 33], [], NULL, NULL
--
loss of masters causing bind to become unresponsive
https://bugs.launchpad.net/bugs/177489
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