Hello, syzbot found the following issue on: HEAD commit: 79c338ab riscv: keep interrupts disabled for BREAKPOINT ex.. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git fixes console output: https://syzkaller.appspot.com/x/log.txt?x=12d1bb9ad00000 kernel config: https://syzkaller.appspot.com/x/.config?x=f8af20e245283c9a dashboard link: https://syzkaller.appspot.com/bug?extid=728b5fa8935674c320bf userspace arch: riscv64 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+728b5fa8935674c320bf@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ WARNING: CPU: 1 PID: 5748 at kernel/events/core.c:3219 ctx_sched_out+0x544/0x548 kernel/events/core.c:3219 Modules linked in: CPU: 1 PID: 5748 Comm: syz-executor.0 Not tainted 5.12.0-rc6-syzkaller-00183-g79c338ab575e #0 Hardware name: riscv-virtio,qemu (DT) epc : ctx_sched_out+0x544/0x548 kernel/events/core.c:3219 ra : ctx_sched_out+0x544/0x548 kernel/events/core.c:3219 epc : ffffffe00027c604 ra : ffffffe00027c604 sp : ffffffe01e84ba90 gp : ffffffe004588ad0 tp : ffffffe007ba2f80 t0 : ffffffc400f57234 t1 : 0000000000000001 t2 : 0000000000000000 s0 : ffffffe01e84baf0 s1 : ffffffe006c8dc00 a0 : ffffffe067d79118 a1 : 00000000000f0000 a2 : ffffffd013437000 a3 : ffffffe00027c604 a4 : ffffffd01343ddb0 a5 : 0000000000000db6 a6 : 0000000000f00000 a7 : ffffffe00027d02e s2 : ffffffe067d78f70 s3 : 0000000000000000 s4 : ffffffe067d79118 s5 : 0000000000000001 s6 : ffffffe006c8dd40 s7 : 0000000000000000 s8 : ffffffe007ba2f80 s9 : ffffffe00458c0d0 s10: 0000000000000000 s11: 0000000000000000 t3 : dca1909648c0c800 t4 : ffffffc403d09797 t5 : ffffffc403d09799 t6 : ffffffe00d5a321c status: 0000000000000100 badaddr: 0000000000000000 cause: 0000000000000003 Call Trace: [<ffffffe00027c604>] ctx_sched_out+0x544/0x548 kernel/events/core.c:3219 [<ffffffe00027d162>] __perf_install_in_context+0x1f4/0x47c kernel/events/core.c:2799 [<ffffffe00026b630>] remote_function kernel/events/core.c:91 [inline] [<ffffffe00026b630>] remote_function+0xa8/0xc0 kernel/events/core.c:71 [<ffffffe0001452cc>] generic_exec_single+0x1a6/0x212 kernel/smp.c:293 [<ffffffe00014546c>] smp_call_function_single+0x134/0x2ba kernel/smp.c:513 [<ffffffe00026a8ba>] task_function_call+0x90/0xee kernel/events/core.c:119 [<ffffffe00027bf4e>] perf_install_in_context+0x174/0x2e6 kernel/events/core.c:2902 [<ffffffe000288690>] __do_sys_perf_event_open+0x10ea/0x199e kernel/events/core.c:12169 [<ffffffe00028f3e6>] sys_perf_event_open+0x34/0x46 kernel/events/core.c:11775 [<ffffffe000005578>] ret_from_syscall+0x0/0x2 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
