syzbot


panic: softclock: invalid to_clock: ADDR (4)

Status: upstream: reported on 2025/07/11 05:14
Reported-by: syzbot+1a4766215e072e4103d3@syzkaller.appspotmail.com
First crash: 100d, last: 28d
Similar bugs (3)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
openbsd panic: softclock: invalid to_clock: ADDR (3) 2 1 196d 196d 0/3 auto-obsoleted due to no activity on 2025/07/05 07:02
openbsd panic: softclock: invalid to_clock: ADDR (2) 2 4 367d 439d 0/3 auto-obsoleted due to no activity on 2025/01/15 00:48
openbsd panic: softclock: invalid to_clock: ADDR 2 58 507d 599d 0/3 auto-obsoleted due to no activity on 2024/07/18 18:55

Sample crash report:
panic: softclock: invalid to_clock: 1633771873
Starting stack trace...
panic(ffffffff8339bee3) at panic+0x1d0 sys/kern/subr_prf.c:229
softclock(0) at softclock+0x2a6
softintr_dispatch(0) at softintr_dispatch+0x13b sys/kern/kern_softintr.c:84
dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847
Xsoftclock() at Xsoftclock+0x27
soreceive(ffff8000014308e0,0,ffff80002a2e86e8,0,0,ffff80002a2e85f4,d4c52b6a13b9f9dd) at soreceive+0x20e7 sys/kern/uipc_socket.c:1228
soo_read(fffffd806e495e70,ffff80002a2e86e8,0) at soo_read+0x60 sys/kern/sys_socket.c:67
dofilereadv(ffff80002a2b6548,3,ffff80002a2e86e8,0,ffff80002a2e87a0) at dofilereadv+0x25a sys/kern/sys_generic.c:252
sys_read(ffff80002a2b6548,ffff80002a2e8850,ffff80002a2e87a0) at sys_read+0xa2 sys/kern/sys_generic.c:172
syscall(ffff80002a2e8850) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline]
syscall(ffff80002a2e8850) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748

Crashes (3):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/09/21 03:20 openbsd 623648cde278 67c37560 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: softclock: invalid to_clock: ADDR
2025/09/02 04:15 openbsd 813b141997c4 807a3b61 .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-main panic: softclock: invalid to_clock: ADDR
2025/07/11 05:14 openbsd 0b4ddc31a5ae 3cda49cf .config console log report [disk image] [bsd.gdb] [kernel image] ci-openbsd-multicore panic: softclock: invalid to_clock: ADDR
* Struck through repros no longer work on HEAD.