uvm_fault: savectx (3)

Status: upstream: reported on 2025/02/20 07:12
Reported-by: syzbot+a67c3d29b86efeb5eed6@syzkaller.appspotmail.com
First crash: 541d, last: 1h40m
Similar bugs (2)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd uvm_fault: savectx -1 1 1359d 1359d 0/4 auto-obsoleted due to no activity on 2023/02/23 10:19
openbsd uvm_fault: savectx (2) -1 33 663d 750d 0/4 auto-obsoleted due to no activity on 2024/12/10 09:14

Sample crash report:
uvm_fault(0xfffff9006fbd67W8, 0x98,S0, 1)  >OT LOWfERaD OpNa gSeY SCALlt i9 sup0 Eisor0  3
oStopped at      savectx+0xae:   movl    $0,%gs:0x688
    TID    PID    UID     PRFLAGS     PFLAGS  CPU  COMMAND
*296711  21379      0           0          0    0  syz-executor
 365123  21379      0           0  0x4000000    1  syz-executor
savectx() at savectx+0xae
end of kernel
end trace frame: 0x6ffc728788c0, count: 14
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Crashes (6182):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/08/15 09:00 openbsd a536f3ad0739 746171ee .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/15 03:52 openbsd a536f3ad0739 746171ee .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/15 01:19 openbsd a536f3ad0739 746171ee .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/14 20:13 openbsd 7d89a3e82316 6f9b3e89 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/14 15:29 openbsd 7d89a3e82316 6f9b3e89 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/14 14:03 openbsd 7d89a3e82316 6f9b3e89 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/14 12:29 openbsd 7d89a3e82316 6f9b3e89 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/14 06:52 openbsd 52741ec3fdca b13552fe .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/14 04:02 openbsd 52741ec3fdca b13552fe .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/13 20:16 openbsd b8ee6bbd8ccb 4d118901 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/13 19:16 openbsd b8ee6bbd8ccb 4d118901 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/13 15:59 openbsd b8ee6bbd8ccb 4d118901 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/13 13:11 openbsd b8ee6bbd8ccb 4d118901 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/13 09:08 openbsd a63ea9f8f0de 359b2492 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/13 04:49 openbsd a63ea9f8f0de 359b2492 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/12 23:48 openbsd a63ea9f8f0de 359b2492 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/12 20:39 openbsd 2610791609b5 ee03bfea .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/12 19:22 openbsd 2610791609b5 ee03bfea .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/12 13:47 openbsd 2610791609b5 ee03bfea .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/12 06:23 openbsd a47f863e5cb3 f8d35649 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/11 20:56 openbsd 99858244924d 557a89d3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/11 19:24 openbsd 99858244924d 557a89d3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/11 18:23 openbsd 99858244924d 557a89d3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/11 15:38 openbsd 99858244924d 557a89d3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/11 10:12 openbsd 99858244924d 557a89d3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/11 08:58 openbsd b56428e2942e 508909ea .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/11 07:54 openbsd b56428e2942e 508909ea .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/11 05:37 openbsd b56428e2942e 508909ea .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/11 03:31 openbsd b56428e2942e 508909ea .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/10 20:12 openbsd 422ca638c1d6 558388e4 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/10 18:27 openbsd 422ca638c1d6 558388e4 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/10 15:58 openbsd 422ca638c1d6 558388e4 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/10 13:15 openbsd 422ca638c1d6 558388e4 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/10 11:22 openbsd 422ca638c1d6 558388e4 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/10 09:54 openbsd 422ca638c1d6 558388e4 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/10 07:24 openbsd 422ca638c1d6 5d63f80b .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/10 06:16 openbsd fab829404855 5d63f80b .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/10 04:02 openbsd fab829404855 5d63f80b .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/10 02:36 openbsd fab829404855 5d63f80b .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/10 01:03 openbsd fab829404855 5d63f80b .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/09 23:32 openbsd fab829404855 5d63f80b .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/08/09 22:14 openbsd fab829404855 5d63f80b .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
2026/07/31 13:21 openbsd 6bf809100faf db462e94 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid uvm_fault: savectx
2026/07/13 16:10 openbsd 663dfdac4969 a870962e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main uvm_fault: savectx
2025/02/20 07:11 openbsd 483a78e15aaa 50668798 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: savectx
* Struck through repros no longer work on HEAD.