syzbot

BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor107/6565
caller is hrtimer_hres_active kernel/time/hrtimer.c:652 [inline]
caller is clock_was_set+0x82/0x7f0 kernel/time/hrtimer.c:950
CPU: 1 PID: 6565 Comm: syz-executor107 Not tainted 5.14.0-rc5-next-20210812-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 check_preemption_disabled+0x13e/0x140 lib/smp_processor_id.c:49
 hrtimer_hres_active kernel/time/hrtimer.c:652 [inline]
 clock_was_set+0x82/0x7f0 kernel/time/hrtimer.c:950
 timekeeping_inject_offset+0x4b4/0x620 kernel/time/timekeeping.c:1375
 do_adjtimex+0x28f/0xa90 kernel/time/timekeeping.c:2409
 do_clock_adjtime kernel/time/posix-timers.c:1109 [inline]
 __do_sys_clock_adjtime+0x163/0x270 kernel/time/posix-timers.c:1121
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x43ef39
Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd41212258 EFLAGS: 00000246 ORIG_RAX: 0000000000000131
RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043ef39