[FATAL src/ReplaySession.cc:1562:flush_syscallbuf()] 
 (task 134826 (rec:134705) at time 3013)
 -> Assertion `t->stop_sig() == SIGSEGV && r.ip() == t->vm()->do_breakpoint_fault_addr()' failed to hold. Replay got unexpected signal (or none) 4 ip 0x792d9b18ba09 breakpoint_fault_addr 0x792d9b1cb787
Tail of trace dump:
{
  real_time:18714.582505 global_time:2993, event:`SYSCALL: futex' (state:ENTERING_SYSCALL) tid:134707, ticks:1691198
rax:0xffffffffffffffda rbx:0x792d8d5fffa0 rcx:0xffffffffffffffff rdx:0x0 rsi:0x189 rdi:0x792d9b1ba740 rbp:0x792d8c0bd760 rsp:0x792d8d5ffdf0 r8:0x0 r9:0x100792dffffffff r10:0x0 r11:0x246 r12:0x792d8c0bf640 r13:0x16 r14:0x792d8e2947d0 r15:0x7ffee8717900 rip:0x70000002 eflags:0x246 cs:0x33 ss:0x2b ds:0x0 es:0x0 fs:0x0 gs:0x0 orig_rax:0xca fs_base:0x792d8c0bf640 gs_base:0x0
}
{
  real_time:18714.582510 global_time:2994, event:`SYSCALLBUF_RESET' tid:134707, ticks:1691198
}
{
  real_time:18714.585313 global_time:2995, event:`SYSCALL: mmap' (state:ENTERING_SYSCALL) tid:134705, ticks:1190144891
rax:0xffffffffffffffda rbx:0x681fffa0 rcx:0xffffffffffffffff rdx:0x0 rsi:0x2000f000 rdi:0x0 rbp:0x7ffee8716fd0 rsp:0x681ffdf0 r8:0xffffffff r9:0x0 r10:0x4022 r11:0x246 r12:0x7ffee87186c8 r13:0x59e6eb48fe50 r14:0x0 r15:0x792d9b21f040 rip:0x70000002 eflags:0x246 cs:0x33 ss:0x2b ds:0x0 es:0x0 fs:0x0 gs:0x0 orig_rax:0x9 fs_base:0x792d9b057a80 gs_base:0x0
}
{
  real_time:18714.585349 global_time:2996, event:`SYSCALL: mmap' (state:EXITING_SYSCALL) tid:134705, ticks:1190144891
rax:0x792ca3ff1000 rbx:0x681fffa0 rcx:0xffffffffffffffff rdx:0x0 rsi:0x2000f000 rdi:0x0 rbp:0x7ffee8716fd0 rsp:0x681ffdf0 r8:0xffffffff r9:0x0 r10:0x4022 r11:0x246 r12:0x7ffee87186c8 r13:0x59e6eb48fe50 r14:0x0 r15:0x792d9b21f040 rip:0x70000002 eflags:0x246 cs:0x33 ss:0x2b ds:0x0 es:0x0 fs:0x0 gs:0x0 orig_rax:0x9 fs_base:0x792d9b057a80 gs_base:0x0
  { map_file:"<ZERO>", addr:0x792ca3ff1000, length:0x2000f000, prot_flags:"---p", file_offset:0x0, device:0, inode:0, data_file:"", data_offset:0x0, file_size:0x2000f000 }
}
{
  real_time:18714.585381 global_time:2997, event:`SYSCALL: munmap' (state:ENTERING_SYSCALL) tid:134705, ticks:1190144925
rax:0xffffffffffffffda rbx:0x681fffa0 rcx:0xffffffffffffffff rdx:0x792d9b13d7b7 rsi:0xf000 rdi:0x792ca3ff1000 rbp:0x7ffee8716fd0 rsp:0x681ffdf0 r8:0xffffffff r9:0x0 r10:0x4022 r11:0x246 r12:0x7ffee87186c8 r13:0x59e6eb48fe50 r14:0x0 r15:0x792d9b21f040 rip:0x70000002 eflags:0x246 cs:0x33 ss:0x2b ds:0x0 es:0x0 fs:0x0 gs:0x0 orig_rax:0xb fs_base:0x792d9b057a80 gs_base:0x0
}
{
  real_time:18714.585419 global_time:2998, event:`SYSCALL: munmap' (state:EXITING_SYSCALL) tid:134705, ticks:1190144925
rax:0x0 rbx:0x681fffa0 rcx:0xffffffffffffffff rdx:0x792d9b13d7b7 rsi:0xf000 rdi:0x792ca3ff1000 rbp:0x7ffee8716fd0 rsp:0x681ffdf0 r8:0xffffffff r9:0x0 r10:0x4022 r11:0x246 r12:0x7ffee87186c8 r13:0x59e6eb48fe50 r14:0x0 r15:0x792d9b21f040 rip:0x70000002 eflags:0x246 cs:0x33 ss:0x2b ds:0x0 es:0x0 fs:0x0 gs:0x0 orig_rax:0xb fs_base:0x792d9b057a80 gs_base:0x0
}
{
  real_time:18714.585475 global_time:2999, event:`SYSCALLBUF_FLUSH' tid:134705, ticks:1190145516
  { syscall:'openat', ret:0x7, size:0x10, desched:1 }
  { syscall:'readlinkat', ret:0xc, size:0x1c }
  { syscall:'fstatat', ret:0x0, size:0xa0 }
}
{
  real_time:18714.585481 global_time:3000, event:`SYSCALL: ioctl' (state:ENTERING_SYSCALL) tid:134705, ticks:1190145516
rax:0xffffffffffffffda rbx:0x681fffa0 rcx:0xffffffffffffffff rdx:0x7ffee8716e10 rsi:0x5401 rdi:0x7 rbp:0x59e7035c5cc0 rsp:0x681ffdd0 r8:0x7ffee8716e50 r9:0x1 r10:0x1000 r11:0x246 r12:0x16 r13:0x7ffee8717060 r14:0x7ffee8717060 r15:0x792d9b057a80 rip:0x70000002 eflags:0x246 cs:0x33 ss:0x2b ds:0x0 es:0x0 fs:0x0 gs:0x0 orig_rax:0x10 fs_base:0x792d9b057a80 gs_base:0x0
}
{
  real_time:18714.585486 global_time:3001, event:`SYSCALLBUF_RESET' tid:134705, ticks:1190145516
}
{
  real_time:18714.585514 global_time:3002, event:`SYSCALL: ioctl' (state:EXITING_SYSCALL) tid:134705, ticks:1190145516
rax:0xffffffffffffffea rbx:0x681fffa0 rcx:0xffffffffffffffff rdx:0x7ffee8716e10 rsi:0x5401 rdi:0x7 rbp:0x59e7035c5cc0 rsp:0x681ffdd0 r8:0x7ffee8716e50 r9:0x1 r10:0x1000 r11:0x246 r12:0x16 r13:0x7ffee8717060 r14:0x7ffee8717060 r15:0x792d9b057a80 rip:0x70000002 eflags:0x246 cs:0x33 ss:0x2b ds:0x0 es:0x0 fs:0x0 gs:0x0 orig_rax:0x10 fs_base:0x792d9b057a80 gs_base:0x0
  { tid:134705, addr:0x7ffee8716e10, length:0x24 }
}
{
  real_time:18714.585613 global_time:3003, event:`SYSCALLBUF_FLUSH' tid:134705, ticks:1190148544
  { syscall:'read', ret:0x1000, size:0x1010, desched:1 }
  { syscall:'close', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { start:0x792ca4000000, size:10000, prot:'r--' }
  { start:0x792ca4010000, size:4000, prot:'rw-' }
  { start:0x792ca4020000, size:4000, prot:'rw-' }
  { start:0x792ca4030000, size:4000, prot:'rw-' }
  { start:0x792ca4040000, size:4000, prot:'rw-' }
}
{
  real_time:18714.585619 global_time:3004, event:`SYSCALL: mmap' (state:ENTERING_SYSCALL) tid:134705, ticks:1190148544
rax:0xffffffffffffffda rbx:0x681fffa0 rcx:0xffffffffffffffff rdx:0x0 rsi:0x400f000 rdi:0x0 rbp:0x7ffee8716fd0 rsp:0x681ffdf0 r8:0xffffffff r9:0x0 r10:0x4022 r11:0x246 r12:0x7ffee87186c8 r13:0x59e6eb48fe50 r14:0x0 r15:0x792d9b21f040 rip:0x70000002 eflags:0x246 cs:0x33 ss:0x2b ds:0x0 es:0x0 fs:0x0 gs:0x0 orig_rax:0x9 fs_base:0x792d9b057a80 gs_base:0x0
}
{
  real_time:18714.585627 global_time:3005, event:`SYSCALLBUF_RESET' tid:134705, ticks:1190148544
}
{
  real_time:18714.585660 global_time:3006, event:`SYSCALL: mmap' (state:EXITING_SYSCALL) tid:134705, ticks:1190148544
rax:0x792c9fff1000 rbx:0x681fffa0 rcx:0xffffffffffffffff rdx:0x0 rsi:0x400f000 rdi:0x0 rbp:0x7ffee8716fd0 rsp:0x681ffdf0 r8:0xffffffff r9:0x0 r10:0x4022 r11:0x246 r12:0x7ffee87186c8 r13:0x59e6eb48fe50 r14:0x0 r15:0x792d9b21f040 rip:0x70000002 eflags:0x246 cs:0x33 ss:0x2b ds:0x0 es:0x0 fs:0x0 gs:0x0 orig_rax:0x9 fs_base:0x792d9b057a80 gs_base:0x0
  { map_file:"<ZERO>", addr:0x792c9fff1000, length:0x400f000, prot_flags:"---p", file_offset:0x0, device:0, inode:0, data_file:"", data_offset:0x0, file_size:0x400f000 }
}
{
  real_time:18714.585692 global_time:3007, event:`SYSCALL: munmap' (state:ENTERING_SYSCALL) tid:134705, ticks:1190148578
rax:0xffffffffffffffda rbx:0x681fffa0 rcx:0xffffffffffffffff rdx:0x792d9b13d7b7 rsi:0xf000 rdi:0x792c9fff1000 rbp:0x7ffee8716fd0 rsp:0x681ffdf0 r8:0xffffffff r9:0x0 r10:0x4022 r11:0x246 r12:0x7ffee87186c8 r13:0x59e6eb48fe50 r14:0x0 r15:0x792d9b21f040 rip:0x70000002 eflags:0x246 cs:0x33 ss:0x2b ds:0x0 es:0x0 fs:0x0 gs:0x0 orig_rax:0xb fs_base:0x792d9b057a80 gs_base:0x0
}
{
  real_time:18714.585722 global_time:3008, event:`SYSCALL: munmap' (state:EXITING_SYSCALL) tid:134705, ticks:1190148578
rax:0x0 rbx:0x681fffa0 rcx:0xffffffffffffffff rdx:0x792d9b13d7b7 rsi:0xf000 rdi:0x792c9fff1000 rbp:0x7ffee8716fd0 rsp:0x681ffdf0 r8:0xffffffff r9:0x0 r10:0x4022 r11:0x246 r12:0x7ffee87186c8 r13:0x59e6eb48fe50 r14:0x0 r15:0x792d9b21f040 rip:0x70000002 eflags:0x246 cs:0x33 ss:0x2b ds:0x0 es:0x0 fs:0x0 gs:0x0 orig_rax:0xb fs_base:0x792d9b057a80 gs_base:0x0
}
{
  real_time:18714.585773 global_time:3009, event:`SYSCALLBUF_FLUSH' tid:134705, ticks:1190149137
  { syscall:'openat', ret:0x7, size:0x10, desched:1 }
  { syscall:'readlinkat', ret:0xc, size:0x1c }
  { syscall:'fstatat', ret:0x0, size:0xa0 }
}
{
  real_time:18714.585779 global_time:3010, event:`SYSCALL: ioctl' (state:ENTERING_SYSCALL) tid:134705, ticks:1190149137
rax:0xffffffffffffffda rbx:0x681fffa0 rcx:0xffffffffffffffff rdx:0x7ffee8716e10 rsi:0x5401 rdi:0x7 rbp:0x59e7035c5cc0 rsp:0x681ffdd0 r8:0x7ffee8716e50 r9:0x1 r10:0x1000 r11:0x246 r12:0x16 r13:0x7ffee8717060 r14:0x7ffee8717060 r15:0x792d9b057a80 rip:0x70000002 eflags:0x246 cs:0x33 ss:0x2b ds:0x0 es:0x0 fs:0x0 gs:0x0 orig_rax:0x10 fs_base:0x792d9b057a80 gs_base:0x0
}
{
  real_time:18714.585784 global_time:3011, event:`SYSCALLBUF_RESET' tid:134705, ticks:1190149137
}
{
  real_time:18714.585812 global_time:3012, event:`SYSCALL: ioctl' (state:EXITING_SYSCALL) tid:134705, ticks:1190149137
rax:0xffffffffffffffea rbx:0x681fffa0 rcx:0xffffffffffffffff rdx:0x7ffee8716e10 rsi:0x5401 rdi:0x7 rbp:0x59e7035c5cc0 rsp:0x681ffdd0 r8:0x7ffee8716e50 r9:0x1 r10:0x1000 r11:0x246 r12:0x16 r13:0x7ffee8717060 r14:0x7ffee8717060 r15:0x792d9b057a80 rip:0x70000002 eflags:0x246 cs:0x33 ss:0x2b ds:0x0 es:0x0 fs:0x0 gs:0x0 orig_rax:0x10 fs_base:0x792d9b057a80 gs_base:0x0
  { tid:134705, addr:0x7ffee8716e10, length:0x24 }
}
{
  real_time:18714.590368 global_time:3013, event:`SYSCALLBUF_FLUSH' tid:134705, ticks:1191037696
  { syscall:'read', ret:0x1000, size:0x1010, desched:1 }
  { syscall:'close', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'madvise', ret:0x0, size:0x10 }
  { syscall:'madvise', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'mprotect', ret:0x0, size:0x10 }
  { syscall:'clock_gettime', ret:0x0, size:0x20 }
  { syscall:'openat', ret:0x7, size:0x10, desched:1 }
  { syscall:'readlinkat', ret:0xc, size:0x1c }
  { syscall:'fstatat', ret:0x0, size:0xa0 }
  { start:0x792ca0000000, size:10000, prot:'r--' }
  { start:0x792ca0010000, size:4000, prot:'rw-' }
  { start:0x792ca0020000, size:4000, prot:'rw-' }
  { start:0x792ca0030000, size:4000, prot:'rw-' }
  { start:0x792ca0040000, size:4000, prot:'rw-' }
  { start:0x792ce4000000, size:10000, prot:'rw-' }
  { start:0x792ce4000000, size:10000, prot:'r--' }
  { start:0x77eb00000000, size:40000, prot:'rw-' }
  { start:0x77eb00080000, size:40000, prot:'rw-' }
  { start:0x77eb000c0000, size:40000, prot:'rw-' }
  { start:0x77eb00100000, size:40000, prot:'rw-' }
  { start:0x77eb00140000, size:40000, prot:'rw-' }
  { start:0x77eb00180000, size:40000, prot:'rw-' }
  { start:0x77eb00200000, size:40000, prot:'rw-' }
  { start:0x77eb00233000, size:d000, prot:'---' }
  { start:0x77eb00000000, size:40000, prot:'r--' }
  { start:0x77eb00080000, size:40000, prot:'r--' }
  { start:0x77eb000c0000, size:40000, prot:'r--' }
  { start:0x77eb00100000, size:40000, prot:'r--' }
  { start:0x77eb00140000, size:40000, prot:'r--' }
  { start:0x77eb00180000, size:40000, prot:'r--' }
  { start:0x77eb00200000, size:33000, prot:'r--' }
  { start:0x792cc4000000, size:10000, prot:'rw-' }
  { start:0x792cc4000000, size:10000, prot:'r--' }
  { start:0x77eb00040000, size:40000, prot:'rw-' }
  { start:0x77eb00740000, size:40000, prot:'rw-' }
  { start:0x77eb00780000, size:40000, prot:'rw-' }
  { start:0x77eb001c0000, size:40000, prot:'rw-' }
  { start:0x77eb00240000, size:500000, prot:'rw-' }
  { start:0x46a00100000, size:40000, prot:'rw-' }
  { start:0x46a00140000, size:40000, prot:'rw-' }
}
{
  real_time:18714.590378 global_time:3014, event:`SYSCALL: ioctl' (state:ENTERING_SYSCALL) tid:134705, ticks:1191037696
rax:0xffffffffffffffda rbx:0x681fffa0 rcx:0xffffffffffffffff rdx:0x7ffee8716dd0 rsi:0x5401 rdi:0x7 rbp:0x59e7035c5cc0 rsp:0x681ffdd0 r8:0x7ffee8716e10 r9:0x1 r10:0x1000 r11:0x246 r12:0x16 r13:0x7ffee8717020 r14:0x7ffee8717020 r15:0x792d9b057a80 rip:0x70000002 eflags:0x246 cs:0x33 ss:0x2b ds:0x0 es:0x0 fs:0x0 gs:0x0 orig_rax:0x10 fs_base:0x792d9b057a80 gs_base:0x0
}
=== Start rr backtrace:
rr(_ZN2rr13dump_rr_stackERNS_8ScopedFdE+0x5b)[0x580f088a7fcb]
rr(_ZN2rr15emergency_debugEPNS_4TaskE+0x152)[0x580f0877a572]
rr(+0xe30da)[0x580f0877b0da]
rr(+0xe32df)[0x580f0877b2df]
rr(+0xe3319)[0x580f0877b319]
rr(_ZN2rr13ReplaySession16flush_syscallbufEPNS_10ReplayTaskERKNS0_15StepConstraintsE+0x121e)[0x580f0881a3de]
rr(_ZN2rr13ReplaySession18try_one_trace_stepEPNS_10ReplayTaskERKNS0_15StepConstraintsE+0x263)[0x580f0881c1d3]
rr(_ZN2rr13ReplaySession11replay_stepERKNS0_15StepConstraintsE+0x21d)[0x580f0881d98d]
rr(_ZN2rr14ReplayTimeline19replay_step_forwardENS_10RunCommandE+0xbf)[0x580f0883afef]
rr(_ZN2rr9GdbServer14debug_one_stepERNS_10GdbRequestE+0xf48)[0x580f0875ed48]
rr(_ZN2rr9GdbServer12serve_replayESt10shared_ptrINS_13ReplaySessionEERKNS0_6TargetEPVbNS_12DebuggerTypeERKNS0_15ConnectionFlagsE+0x977)[0x580f0875fb47]
rr(_ZN2rr13ReplayCommand3runERSt6vectorINSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEESaIS7_EE+0x8f0)[0x580f08810820]
rr(main+0x1a1)[0x580f086edc71]
/lib/x86_64-linux-gnu/libc.so.6(+0x29d90)[0x737b27829d90]
/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x80)[0x737b27829e40]
rr(_start+0x25)[0x580f086f0775]
=== End rr backtrace