syzbot


uvm_fault: db_enter (5)

Status: upstream: reported on 2023/09/11 08:12
Reported-by: syzbot+2420d1ce1c8f5ba1e7ae@syzkaller.appspotmail.com
First crash: 276d, last: 15d
Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd uvm_fault: db_enter (2) 1 764d 764d 0/3 closed as invalid on 2022/05/11 17:28
openbsd uvm_fault: db_enter 43 1423d 1477d 0/3 closed as dup on 2020/05/30 07:36
openbsd uvm_fault: db_enter (4) 30 378d 720d 0/3 auto-obsoleted due to no activity on 2023/08/30 12:34
openbsd uvm_fault: db_enter (3) 1 734d 734d 0/3 closed as invalid on 2022/06/11 05:12

Sample crash report:
uvm_fault(fffffd806a8f8388,c9372a36000,0,1) at uvm_fault+0x189 sys/uvm/uvm_fault.c:622
upageflttrap(ffff800037391910,c9372a36000) at upageflttrap+0x8e sys/arch/amd64/amd64/trap.c:188
usertrap(ffff800037391910) at usertrap+0x22a sys/arch/amd64/amd64/trap.c:436
recall_trap() at recall_trap+0x8
end of kernel
end trace frame: 0x7f601ec236f0, count: -11
ddb{0}> machine ddbcpu 1
Stopped at      db_enter+0x1c:  addq    $0x8,%rsp
ddb{1}> trace
db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437
witness_checkorder(fffffd806a5025f8,9,0) at witness_checkorder+0xc05
rw_enter(fffffd806a5025e8,1) at rw_enter+0xd1
rrw_enter(fffffd806a5025e8,1) at rrw_enter+0x91 sys/kern/kern_rwlock.c:464
VOP_LOCK(fffffd806a706028,2001) at VOP_LOCK+0x8b sys/kern/vfs_vops.c:524
vn_lock(fffffd806a706028,2001) at vn_lock+0x85 sys/kern/vfs_vnops.c:564
vfs_lookup(ffff80002a205e28) at vfs_lookup+0xd3 sys/kern/vfs_lookup.c:418
namei(ffff80002a205e28) at namei+0x56a sys/kern/vfs_lookup.c:250
unp_connect(ffff800000e6e578,fffffd806d167200,ffff80002d726030) at unp_connect+0x1ce sys/kern/uipc_usrreq.c:864
uipc_dgram_send(ffff800000e6e578,fffffd806d3cc400,fffffd806d167200,0) at uipc_dgram_send+0xd7 sys/kern/uipc_usrreq.c:599
sosend(ffff800000e6e578,fffffd806d167200,ffff80002a2060b8,0,0,0) at sosend+0x7aa
sendit(ffff80002d726030,3,ffff80002a206230,0,ffff80002a2062f0) at sendit+0x54c sys/kern/uipc_syscalls.c:786
sys_sendmsg(ffff80002d726030,ffff80002a2063a0,ffff80002a2062f0) at sys_sendmsg+0x19b sys/kern/uipc_syscalls.c:604
syscall(ffff80002a2063a0) at syscall+0x8cf mi_syscall sys/sys/syscall_mi.h:180 [inline]
syscall(ffff80002a2063a0) at syscall+0x8cf sys/arch/amd64/amd64/trap.c:577
Xsyscall() at Xsyscall+0x128
end of kernel
end trace frame: 0x20e220bdca0, count: -15

Crashes (56):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/05/29 21:29 openbsd b64799ca563a 34889ee3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/29 20:27 openbsd b64799ca563a 34889ee3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/29 09:18 openbsd f475ad27b09c 34889ee3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/28 17:00 openbsd 06cae3775af3 34889ee3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/27 07:26 openbsd e5fe1651a96d a10a183e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/26 22:37 openbsd e5fe1651a96d a10a183e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/26 11:32 openbsd b0131f08c3a2 a10a183e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/26 10:31 openbsd b0131f08c3a2 a10a183e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/25 23:24 openbsd c57a2cde1c3e a10a183e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/25 16:51 openbsd 92850d3aeacc a10a183e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/25 14:26 openbsd 92850d3aeacc a10a183e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/25 12:10 openbsd 92850d3aeacc a10a183e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/25 04:18 openbsd 4aaef610e0a6 a10a183e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/24 02:52 openbsd 6859a790d2a4 8f98448e .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/22 14:26 openbsd 6859a790d2a4 4d098039 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/22 08:35 openbsd 6859a790d2a4 1014eca7 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/22 02:33 openbsd 6859a790d2a4 1014eca7 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/21 20:08 openbsd 6859a790d2a4 1014eca7 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/20 23:12 openbsd ab5fd4cb8341 c0f1611a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/19 17:41 openbsd 63371a7f711d c0f1611a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/19 17:33 openbsd 63371a7f711d c0f1611a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/19 09:55 openbsd 63371a7f711d c0f1611a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/19 01:41 openbsd 088a2cd995ac c0f1611a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/18 21:16 openbsd 088a2cd995ac c0f1611a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/17 17:11 openbsd fea1e5fd692c c0f1611a .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/17 14:22 openbsd 77ba8c170614 c2e07261 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/16 21:43 openbsd b20edd337af0 ad5321c6 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/15 22:25 openbsd e298eee01736 ef5d53ed .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/13 00:35 openbsd bae657104f70 9026e142 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/13 00:00 openbsd bae657104f70 9026e142 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/12 20:18 openbsd bae657104f70 9026e142 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/12 08:35 openbsd 73556a19205d 9026e142 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/12 07:56 openbsd 73556a19205d 9026e142 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/12 03:34 openbsd 73556a19205d 9026e142 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/11 18:46 openbsd 1b9599294b30 9026e142 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/09 23:42 openbsd a7b9eedcb4c1 de979bc2 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/09 17:47 openbsd a7b9eedcb4c1 de979bc2 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/08 06:50 openbsd 7284c0c62173 4cf3f9b3 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/06 04:01 openbsd 4580bd6ebd98 610f2a54 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/06 00:45 openbsd 4580bd6ebd98 610f2a54 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/05 05:27 openbsd 2011187a052f 610f2a54 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/04 23:59 openbsd 2011187a052f 610f2a54 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/04 20:16 openbsd 2011187a052f 610f2a54 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/05/04 18:32 openbsd c604ab84837e 610f2a54 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/04/28 19:43 openbsd b98581f594cd 07b455f9 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/04/25 15:37 openbsd 53a4f4198df9 8bdc0f22 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid uvm_fault: db_enter
2024/04/18 17:52 openbsd 3ed32226cff5 af24b050 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/04/16 18:12 openbsd 25b30cac31a3 2338035c .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/04/15 10:39 openbsd 7019ae976ad9 459f4b00 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid uvm_fault: db_enter
2024/04/15 06:50 openbsd 7019ae976ad9 c8349e48 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid uvm_fault: db_enter
2024/04/09 15:11 openbsd b226cd0be9f7 56086b24 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2024/02/13 04:13 openbsd 211058dfe174 77b23aa1 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid uvm_fault: db_enter
2024/01/16 22:50 openbsd 63cdaeb68a44 2a7bcc7f .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid uvm_fault: db_enter
2023/10/30 05:16 openbsd c8ef2279606a 3c418d72 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore uvm_fault: db_enter
2023/09/11 08:10 openbsd c824b3ec91bf 6654cf89 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-setuid uvm_fault: db_enter
* Struck through repros no longer work on HEAD.