RO or absent /tmp causes dump to fail #10
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criupatchwork
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Jun 2, 2016
It can be dead-lokced: #0 0x00007fafbf49f6ac in __lll_lock_wait_private () from /lib64/libc.so.6 #1 0x00007fafbf44af1c in _L_lock_2460 () from /lib64/libc.so.6 #2 0x00007fafbf44ad57 in __tz_convert () from /lib64/libc.so.6 checkpoint-restore#3 0x00000000004022e2 in test_msg (format=0x404508 "Receive signal %d\n") at msg.c:51 checkpoint-restore#4 <signal handler called> checkpoint-restore#5 0x00007fafbf3f2483 in __GI__IO_vfscanf () from /lib64/libc.so.6 checkpoint-restore#6 0x00007fafbf408f27 in vsscanf () from /lib64/libc.so.6 checkpoint-restore#7 0x00007fafbf4032f7 in sscanf () from /lib64/libc.so.6 checkpoint-restore#8 0x00007fafbf449ba6 in __tzset_parse_tz () from /lib64/libc.so.6 checkpoint-restore#9 0x00007fafbf44c4cb in __tzfile_compute () from /lib64/libc.so.6 checkpoint-restore#10 0x00007fafbf44ae17 in __tz_convert () from /lib64/libc.so.6 checkpoint-restore#11 0x00000000004022e2 in test_msg (format=format@entry=0x40458c "PASS\n") at msg.c:51 checkpoint-restore#12 0x0000000000401ceb in main (argc=<optimized out>, argv=<optimized out>) at ptrace_sig.c:172 https://jira.sw.ru/browse/PSBM-47772 Signed-off-by: Andrey Vagin <[email protected]> Signed-off-by: Andrew Vagin <[email protected]> Tested-by: Cyrill Gorcunov <[email protected]>
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It can be dead-lokced: #0 0x00007fafbf49f6ac in __lll_lock_wait_private () from /lib64/libc.so.6 #1 0x00007fafbf44af1c in _L_lock_2460 () from /lib64/libc.so.6 #2 0x00007fafbf44ad57 in __tz_convert () from /lib64/libc.so.6 #3 0x00000000004022e2 in test_msg (format=0x404508 "Receive signal %d\n") at msg.c:51 #4 <signal handler called> #5 0x00007fafbf3f2483 in __GI__IO_vfscanf () from /lib64/libc.so.6 #6 0x00007fafbf408f27 in vsscanf () from /lib64/libc.so.6 #7 0x00007fafbf4032f7 in sscanf () from /lib64/libc.so.6 #8 0x00007fafbf449ba6 in __tzset_parse_tz () from /lib64/libc.so.6 #9 0x00007fafbf44c4cb in __tzfile_compute () from /lib64/libc.so.6 #10 0x00007fafbf44ae17 in __tz_convert () from /lib64/libc.so.6 #11 0x00000000004022e2 in test_msg (format=format@entry=0x40458c "PASS\n") at msg.c:51 #12 0x0000000000401ceb in main (argc=<optimized out>, argv=<optimized out>) at ptrace_sig.c:172 Signed-off-by: Andrey Vagin <[email protected]> Signed-off-by: Andrew Vagin <[email protected]> Tested-by: Cyrill Gorcunov <[email protected]> Signed-off-by: Pavel Emelyanov <[email protected]>
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Jun 14, 2016
It can be dead-lokced: #0 0x00007fafbf49f6ac in __lll_lock_wait_private () from /lib64/libc.so.6 #1 0x00007fafbf44af1c in _L_lock_2460 () from /lib64/libc.so.6 #2 0x00007fafbf44ad57 in __tz_convert () from /lib64/libc.so.6 #3 0x00000000004022e2 in test_msg (format=0x404508 "Receive signal %d\n") at msg.c:51 #4 <signal handler called> #5 0x00007fafbf3f2483 in __GI__IO_vfscanf () from /lib64/libc.so.6 #6 0x00007fafbf408f27 in vsscanf () from /lib64/libc.so.6 #7 0x00007fafbf4032f7 in sscanf () from /lib64/libc.so.6 #8 0x00007fafbf449ba6 in __tzset_parse_tz () from /lib64/libc.so.6 #9 0x00007fafbf44c4cb in __tzfile_compute () from /lib64/libc.so.6 #10 0x00007fafbf44ae17 in __tz_convert () from /lib64/libc.so.6 #11 0x00000000004022e2 in test_msg (format=format@entry=0x40458c "PASS\n") at msg.c:51 #12 0x0000000000401ceb in main (argc=<optimized out>, argv=<optimized out>) at ptrace_sig.c:172 Signed-off-by: Andrey Vagin <[email protected]> Signed-off-by: Andrew Vagin <[email protected]> Tested-by: Cyrill Gorcunov <[email protected]> Signed-off-by: Pavel Emelyanov <[email protected]>
xemul
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Jun 28, 2016
It can be dead-lokced: #0 0x00007fafbf49f6ac in __lll_lock_wait_private () from /lib64/libc.so.6 #1 0x00007fafbf44af1c in _L_lock_2460 () from /lib64/libc.so.6 #2 0x00007fafbf44ad57 in __tz_convert () from /lib64/libc.so.6 #3 0x00000000004022e2 in test_msg (format=0x404508 "Receive signal %d\n") at msg.c:51 #4 <signal handler called> #5 0x00007fafbf3f2483 in __GI__IO_vfscanf () from /lib64/libc.so.6 #6 0x00007fafbf408f27 in vsscanf () from /lib64/libc.so.6 #7 0x00007fafbf4032f7 in sscanf () from /lib64/libc.so.6 #8 0x00007fafbf449ba6 in __tzset_parse_tz () from /lib64/libc.so.6 #9 0x00007fafbf44c4cb in __tzfile_compute () from /lib64/libc.so.6 #10 0x00007fafbf44ae17 in __tz_convert () from /lib64/libc.so.6 #11 0x00000000004022e2 in test_msg (format=format@entry=0x40458c "PASS\n") at msg.c:51 #12 0x0000000000401ceb in main (argc=<optimized out>, argv=<optimized out>) at ptrace_sig.c:172 Signed-off-by: Andrey Vagin <[email protected]> Signed-off-by: Andrew Vagin <[email protected]> Tested-by: Cyrill Gorcunov <[email protected]> Signed-off-by: Pavel Emelyanov <[email protected]>
criupatchwork
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Sep 7, 2016
phys_stat_resolve() call mount_resolve_path() which requires that mntinfo_tree in the ns_id struct is initialized. This is a problem we observed with sockets on btrfs volumes: Program received signal SIGSEGV, Segmentation fault. 0x00005555555bb6dd in mount_resolve_path (mntinfo_tree=<optimized out>, path=0x555555875790 "/var/lib/lxd/unix.socket") at criu/mount.c:213 213 criu/mount.c: No such file or directory. (gdb) bt #0 0x00005555555bb6dd in mount_resolve_path (mntinfo_tree=<optimized out>, path=0x555555875790 "/var/lib/lxd/unix.socket") at criu/mount.c:213 #1 0x00005555555be240 in phys_stat_resolve_dev (ns=<optimized out>, st_dev=43, path=<optimized out>) at criu/mount.c:240 #2 0x00005555555be2bb in phys_stat_dev_match (st_dev=<optimized out>, phys_dev=41, ns=ns@entry=0x5555558753a0, path=path@entry=0x555555875790 "/var/lib/lxd/unix.socket") at criu/mount.c:256 checkpoint-restore#3 0x00005555555e75ed in unix_process_name (d=d@entry=0x5555558756e0, tb=tb@entry=0x7fffffffe0c0, m=<optimized out>) at criu/sk-unix.c:565 checkpoint-restore#4 0x00005555555e9378 in unix_collect_one (tb=0x7fffffffe0c0, m=0x555555869f18 <buf+312>) at criu/sk-unix.c:620 checkpoint-restore#5 unix_receive_one (h=0x555555869f08 <buf+296>, arg=<optimized out>) at criu/sk-unix.c:692 checkpoint-restore#6 0x00005555555b85aa in nlmsg_receive (buf=<optimized out>, arg=<optimized out>, err_cb=<optimized out>, cb=<optimized out>, len=<optimized out>) at criu/libnetlink.c:45 checkpoint-restore#7 do_rtnl_req (nl=nl@entry=5, req=req@entry=0x7fffffffe220, size=size@entry=72, receive_callback=0x5555555e9290 <unix_receive_one>, error_callback=0x5555555b83d0 <rtnl_return_err>, error_callback@entry=0x0, arg=arg@entry=0x0) at criu/libnetlink.c:119 checkpoint-restore#8 0x00005555555e9cf7 in do_collect_req (nl=nl@entry=5, req=req@entry=0x7fffffffe220, receive_callback=<optimized out>, arg=arg@entry=0x0, size=72) at criu/sockets.c:610 checkpoint-restore#9 0x00005555555eb1d0 in collect_sockets (ns=ns@entry=0x7fffffffe300) at criu/sockets.c:636 checkpoint-restore#10 0x000055555559ddfc in check_sock_diag () at criu/cr-check.c:118 checkpoint-restore#11 cr_check () at criu/cr-check.c:999 checkpoint-restore#12 0x00005555555872d0 in main (argc=<optimized out>, argv=0x7fffffffe678, envp=<optimized out>) at criu/crtools.c:719 Signed-off-by: Christian Brauner <[email protected]>
0x7f454c46
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Jan 30, 2017
It can be dead-locked: #0 0x00007fafbf49f6ac in __lll_lock_wait_private () from /lib64/libc.so.6 checkpoint-restore#1 0x00007fafbf44af1c in _L_lock_2460 () from /lib64/libc.so.6 checkpoint-restore#2 0x00007fafbf44ad57 in __tz_convert () from /lib64/libc.so.6 checkpoint-restore#3 0x00000000004022e2 in test_msg (format=0x404508 "Receive signal %d\n") at msg.c:51 checkpoint-restore#4 <signal handler called> checkpoint-restore#5 0x00007fafbf3f2483 in __GI__IO_vfscanf () from /lib64/libc.so.6 checkpoint-restore#6 0x00007fafbf408f27 in vsscanf () from /lib64/libc.so.6 checkpoint-restore#7 0x00007fafbf4032f7 in sscanf () from /lib64/libc.so.6 checkpoint-restore#8 0x00007fafbf449ba6 in __tzset_parse_tz () from /lib64/libc.so.6 checkpoint-restore#9 0x00007fafbf44c4cb in __tzfile_compute () from /lib64/libc.so.6 checkpoint-restore#10 0x00007fafbf44ae17 in __tz_convert () from /lib64/libc.so.6 checkpoint-restore#11 0x00000000004022e2 in test_msg (format=format@entry=0x40458c "PASS\n") at msg.c:51 checkpoint-restore#12 0x0000000000401ceb in main (argc=<optimized out>, argv=<optimized out>) at ptrace_sig.c:172 https://jira.sw.ru/browse/PSBM-47772 Signed-off-by: Andrey Vagin <[email protected]> Signed-off-by: Andrew Vagin <[email protected]> Signed-off-by: Cyrill Gorcunov <[email protected]>
criupatchwork
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'info' array is off-by-one, nla_parse_nested() requires destination array (i.e. 'info') to have maxtype+1 (i.e. IFLA_INFO_MAX+1) elements: ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7ffef823e3f8 WRITE of size 48 at 0x7ffef823e3f8 thread T0 #0 0x7f9ab7a3915b in __asan_memset (/usr/lib/gcc/x86_64-pc-linux-gnu/5.4.0/libasan.so.2+0x8d15b) #1 0x7f9ab6d4e553 in nla_parse (/usr/lib64/libnl-3.so.200+0xa553) #2 0x4acfb7 in dump_one_netdev criu/net.c:445 checkpoint-restore#3 0x4adb60 in dump_one_ethernet criu/net.c:594 checkpoint-restore#4 0x4adb60 in dump_one_link criu/net.c:665 checkpoint-restore#5 0x48af69 in nlmsg_receive criu/libnetlink.c:45 checkpoint-restore#6 0x48af69 in do_rtnl_req criu/libnetlink.c:119 checkpoint-restore#7 0x4b0e86 in dump_links criu/net.c:878 checkpoint-restore#8 0x4b0e86 in dump_net_ns criu/net.c:1651 checkpoint-restore#9 0x4a760d in do_dump_namespaces criu/namespaces.c:985 checkpoint-restore#10 0x4a760d in dump_namespaces criu/namespaces.c:1045 checkpoint-restore#11 0x451ef7 in cr_dump_tasks criu/cr-dump.c:1799 checkpoint-restore#12 0x424588 in main criu/crtools.c:736 checkpoint-restore#13 0x7f9ab67b171f in __libc_start_main (/lib64/libc.so.6+0x2071f) checkpoint-restore#14 0x4253d8 in _start (/criu/criu/criu+0x4253d8) Address 0x7ffef823e3f8 is located in stack of thread T0 at offset 264 in frame #0 0x4ac9ef in dump_one_netdev criu/net.c:364 This frame has 5 object(s): [32, 168) 'netdev' [224, 264) 'info' <== Memory access at offset 264 overflows this variable [320, 1040) 'req' [1088, 3368) 'path' [3424, 3625) 'stable_secret' Increase 'info' size to fix this. Fixes: b705dcc ("net: pass the struct nlattrs to dump() functions") Signed-off-by: Andrey Ryabinin <[email protected]>
xemul
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Jan 31, 2017
'info' array is off-by-one, nla_parse_nested() requires destination array (i.e. 'info') to have maxtype+1 (i.e. IFLA_INFO_MAX+1) elements: ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7ffef823e3f8 WRITE of size 48 at 0x7ffef823e3f8 thread T0 #0 0x7f9ab7a3915b in __asan_memset (/usr/lib/gcc/x86_64-pc-linux-gnu/5.4.0/libasan.so.2+0x8d15b) #1 0x7f9ab6d4e553 in nla_parse (/usr/lib64/libnl-3.so.200+0xa553) #2 0x4acfb7 in dump_one_netdev criu/net.c:445 #3 0x4adb60 in dump_one_ethernet criu/net.c:594 #4 0x4adb60 in dump_one_link criu/net.c:665 #5 0x48af69 in nlmsg_receive criu/libnetlink.c:45 #6 0x48af69 in do_rtnl_req criu/libnetlink.c:119 #7 0x4b0e86 in dump_links criu/net.c:878 #8 0x4b0e86 in dump_net_ns criu/net.c:1651 #9 0x4a760d in do_dump_namespaces criu/namespaces.c:985 #10 0x4a760d in dump_namespaces criu/namespaces.c:1045 #11 0x451ef7 in cr_dump_tasks criu/cr-dump.c:1799 #12 0x424588 in main criu/crtools.c:736 #13 0x7f9ab67b171f in __libc_start_main (/lib64/libc.so.6+0x2071f) #14 0x4253d8 in _start (/criu/criu/criu+0x4253d8) Address 0x7ffef823e3f8 is located in stack of thread T0 at offset 264 in frame #0 0x4ac9ef in dump_one_netdev criu/net.c:364 This frame has 5 object(s): [32, 168) 'netdev' [224, 264) 'info' <== Memory access at offset 264 overflows this variable [320, 1040) 'req' [1088, 3368) 'path' [3424, 3625) 'stable_secret' Increase 'info' size to fix this. Fixes: b705dcc ("net: pass the struct nlattrs to dump() functions") travis-ci: success for net: fix stack out-of-bounds access in dump_one_netdev() Signed-off-by: Andrey Ryabinin <[email protected]> Acked-by: Cyrill Gorcunov <[email protected]> Signed-off-by: Pavel Emelyanov <[email protected]>
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'info' array is off-by-one, nla_parse_nested() requires destination array (i.e. 'info') to have maxtype+1 (i.e. IFLA_INFO_MAX+1) elements: ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7ffef823e3f8 WRITE of size 48 at 0x7ffef823e3f8 thread T0 #0 0x7f9ab7a3915b in __asan_memset (/usr/lib/gcc/x86_64-pc-linux-gnu/5.4.0/libasan.so.2+0x8d15b) #1 0x7f9ab6d4e553 in nla_parse (/usr/lib64/libnl-3.so.200+0xa553) #2 0x4acfb7 in dump_one_netdev criu/net.c:445 #3 0x4adb60 in dump_one_ethernet criu/net.c:594 #4 0x4adb60 in dump_one_link criu/net.c:665 #5 0x48af69 in nlmsg_receive criu/libnetlink.c:45 #6 0x48af69 in do_rtnl_req criu/libnetlink.c:119 #7 0x4b0e86 in dump_links criu/net.c:878 #8 0x4b0e86 in dump_net_ns criu/net.c:1651 #9 0x4a760d in do_dump_namespaces criu/namespaces.c:985 #10 0x4a760d in dump_namespaces criu/namespaces.c:1045 #11 0x451ef7 in cr_dump_tasks criu/cr-dump.c:1799 #12 0x424588 in main criu/crtools.c:736 #13 0x7f9ab67b171f in __libc_start_main (/lib64/libc.so.6+0x2071f) #14 0x4253d8 in _start (/criu/criu/criu+0x4253d8) Address 0x7ffef823e3f8 is located in stack of thread T0 at offset 264 in frame #0 0x4ac9ef in dump_one_netdev criu/net.c:364 This frame has 5 object(s): [32, 168) 'netdev' [224, 264) 'info' <== Memory access at offset 264 overflows this variable [320, 1040) 'req' [1088, 3368) 'path' [3424, 3625) 'stable_secret' Increase 'info' size to fix this. Fixes: b705dcc ("net: pass the struct nlattrs to dump() functions") travis-ci: success for net: fix stack out-of-bounds access in dump_one_netdev() Signed-off-by: Andrey Ryabinin <[email protected]> Acked-by: Cyrill Gorcunov <[email protected]> Signed-off-by: Pavel Emelyanov <[email protected]>
xemul
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'info' array is off-by-one, nla_parse_nested() requires destination array (i.e. 'info') to have maxtype+1 (i.e. IFLA_INFO_MAX+1) elements: ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7ffef823e3f8 WRITE of size 48 at 0x7ffef823e3f8 thread T0 #0 0x7f9ab7a3915b in __asan_memset (/usr/lib/gcc/x86_64-pc-linux-gnu/5.4.0/libasan.so.2+0x8d15b) #1 0x7f9ab6d4e553 in nla_parse (/usr/lib64/libnl-3.so.200+0xa553) #2 0x4acfb7 in dump_one_netdev criu/net.c:445 #3 0x4adb60 in dump_one_ethernet criu/net.c:594 #4 0x4adb60 in dump_one_link criu/net.c:665 #5 0x48af69 in nlmsg_receive criu/libnetlink.c:45 #6 0x48af69 in do_rtnl_req criu/libnetlink.c:119 #7 0x4b0e86 in dump_links criu/net.c:878 #8 0x4b0e86 in dump_net_ns criu/net.c:1651 #9 0x4a760d in do_dump_namespaces criu/namespaces.c:985 #10 0x4a760d in dump_namespaces criu/namespaces.c:1045 #11 0x451ef7 in cr_dump_tasks criu/cr-dump.c:1799 #12 0x424588 in main criu/crtools.c:736 #13 0x7f9ab67b171f in __libc_start_main (/lib64/libc.so.6+0x2071f) #14 0x4253d8 in _start (/criu/criu/criu+0x4253d8) Address 0x7ffef823e3f8 is located in stack of thread T0 at offset 264 in frame #0 0x4ac9ef in dump_one_netdev criu/net.c:364 This frame has 5 object(s): [32, 168) 'netdev' [224, 264) 'info' <== Memory access at offset 264 overflows this variable [320, 1040) 'req' [1088, 3368) 'path' [3424, 3625) 'stable_secret' Increase 'info' size to fix this. Fixes: b705dcc ("net: pass the struct nlattrs to dump() functions") travis-ci: success for net: fix stack out-of-bounds access in dump_one_netdev() Signed-off-by: Andrey Ryabinin <[email protected]> Acked-by: Cyrill Gorcunov <[email protected]> Signed-off-by: Pavel Emelyanov <[email protected]>
This was referenced Mar 17, 2021
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As described in isse #6 r/o /tmp causes failure in open_mountpoint() due to inability to mkdtemp(). Same will be for the case when /tmp is absent. Same will be for RO / :)
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