We also encountered this issue with 2.4.7-1ubuntu4.17 I can reproduce it from times to times with a light parralel load (50-200 requests in //)
Here is some details: Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 0x7f811d7fa700 (LWP 26536)] process_socket (my_thread_num=8, my_child_num=<optimized out>, cs=0x7f81241962b8, sock=<optimized out>, p=<optimized out>, thd=<optimized out>) at event.c:1064 1064 event.c: No such file or directory. (gdb) bt #0 process_socket (my_thread_num=8, my_child_num=<optimized out>, cs=0x7f81241962b8, sock=<optimized out>, p=<optimized out>, thd=<optimized out>) at event.c:1064 #1 worker_thread (thd=<optimized out>, dummy=<optimized out>) at event.c:1815 #2 0x00007f8129ec6184 in start_thread (arg=0x7f811d7fa700) at pthread_create.c:312 #3 0x00007f8129bf2ffd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 (gdb) bt full #0 process_socket (my_thread_num=8, my_child_num=<optimized out>, cs=0x7f81241962b8, sock=<optimized out>, p=<optimized out>, thd=<optimized out>) at event.c:1064 c = 0x7f8124196330 sbh = 0x7f8124196908 conn_id = <optimized out> rc = <optimized out> #1 worker_thread (thd=<optimized out>, dummy=<optimized out>) at event.c:1815 ti = <optimized out> process_slot = <optimized out> thread_slot = 8 csd = 0x7f81241960b0 cs = 0x7f81241962b8 ptrans = 0x7f8124196028 rv = <optimized out> is_idle = 0 te = 0x0 #2 0x00007f8129ec6184 in start_thread (arg=0x7f811d7fa700) at pthread_create.c:312 __res = <optimized out> pd = 0x7f811d7fa700 now = <optimized out> unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140192522413824, -4554003917395454359, 0, 0, 140192522414528, 140192522413824, 4597849143617525353, 4597821488042743401}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}} not_first_call = <optimized out> pagesize_m1 = <optimized out> sp = <optimized out> freesize = <optimized out> __PRETTY_FUNCTION__ = "start_thread" #3 0x00007f8129bf2ffd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111 No locals. (gdb) p c $1 = (conn_rec *) 0x7f8124196330 (gdb) p *c Cannot access memory at address 0x7f8124196330 (gdb) p cs $2 = (event_conn_state_t *) 0x7f81241962b8 (gdb) p *cs Cannot access memory at address 0x7f81241962b8 And the corresponding core. If you need more information, please ask -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1630413 Title: segfault in server/mpm/event/event.c:process_socket To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apache2/+bug/1630413/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs