BUG: MAX_LOCKDEP_CHAINS too low!
turning off the locking correctness validator.
CPU: 0 PID: 4105 Comm: systemd-udevd Not tainted 5.6.0-rc3-next-20200228-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x188/0x20d lib/dump_stack.c:118
 add_chain_cache kernel/locking/lockdep.c:3048 [inline]
 lookup_chain_cache_add kernel/locking/lockdep.c:3147 [inline]
 validate_chain kernel/locking/lockdep.c:3168 [inline]
 __lock_acquire.cold+0x11/0x2c1 kernel/locking/lockdep.c:4190
 lock_acquire+0x197/0x420 kernel/locking/lockdep.c:4720
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x8c/0xbf kernel/locking/spinlock.c:159
 remove_entity_load_avg+0x76/0x250 kernel/sched/fair.c:3839
 finish_task_switch+0x516/0x750 kernel/sched/core.c:3240
 context_switch kernel/sched/core.c:3381 [inline]
 __schedule+0x93c/0x1f90 kernel/sched/core.c:4078
 preempt_schedule_common+0x4a/0xc0 kernel/sched/core.c:4233
 ___preempt_schedule+0x16/0x18 arch/x86/entry/thunk_64.S:50
 unwind_next_frame+0xdd3/0x19d0 arch/x86/kernel/unwind_orc.c:572
 arch_stack_walk+0x74/0xd0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:123
 save_stack+0x1b/0x40 mm/kasan/common.c:49
 set_track mm/kasan/common.c:57 [inline]
 __kasan_kmalloc mm/kasan/common.c:492 [inline]
 __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:465
 slab_post_alloc_hook mm/slab.h:586 [inline]
 slab_alloc mm/slab.c:3320 [inline]
 __do_kmalloc mm/slab.c:3654 [inline]
 __kmalloc+0x14b/0x7a0 mm/slab.c:3665
 kmalloc include/linux/slab.h:560 [inline]
 kernfs_fop_write+0x345/0x490 fs/kernfs/file.c:292
 __vfs_write+0x76/0x100 fs/read_write.c:494
 vfs_write+0x262/0x5c0 fs/read_write.c:558
 ksys_write+0x127/0x250 fs/read_write.c:611
 do_syscall_64+0xf6/0x790 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x7f515596e970
Code: 73 01 c3 48 8b 0d 28 d5 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 99 2d 2c 00 00 75 10 b8 01 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 7e 9b 01 00 48 89 04 24
RSP: 002b:00007ffde3fe5778 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000007 RCX: 00007f515596e970
RDX: 0000000000000007 RSI: 00005636d3308e90 RDI: 000000000000000e
RBP: 00005636d3308e90 R08: 00005636d3308d40 R09: 00007f5156afb8c0
R10: 0000000000080240 R11: 0000000000000246 R12: 0000000000000007
R13: 0000000000000001 R14: 00005636d3308c60 R15: 0000000000000007