BUG: sleeping function called from invalid context at arch/x86/mm/fault.c:1253
in_atomic(): 0, irqs_disabled(): 1, non_block: 0, pid: 3897, name: systemd-udevd
1 lock held by systemd-udevd/3897:
 #0: ffff8880933dc4e8 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:56 [inline]
 #0: ffff8880933dc4e8 (&mm->mmap_lock#2){++++}-{3:3}, at: do_user_addr_fault+0x344/0xba0 arch/x86/mm/fault.c:1236
irq event stamp: 9532994
hardirqs last  enabled at (9532993): [<ffffffff81b30e61>] kfree+0x141/0x220 mm/slab.c:3758
hardirqs last disabled at (9532994): [<ffffffff88202f8e>] idtentry_enter_cond_rcu+0x2e/0x50 arch/x86/entry/common.c:649
softirqs last  enabled at (9532452): [<ffffffff88400f0f>] asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711
softirqs last disabled at (9532401): [<ffffffff88400f0f>] asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711
CPU: 0 PID: 3897 Comm: systemd-udevd Not tainted 5.8.0-rc7-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+0x1f0/0x31e lib/dump_stack.c:118
 ___might_sleep+0x3c0/0x570 kernel/sched/core.c:6941
 do_user_addr_fault+0x377/0xba0 arch/x86/mm/fault.c:1253
 handle_page_fault arch/x86/mm/fault.c:1365 [inline]
 exc_page_fault+0x124/0x1f0 arch/x86/mm/fault.c:1418
 asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:542
RIP: 0010:_etext+0x111d1b/0x1fe4cb
Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
RSP: 0018:ffffc90000e77f10 EFLAGS: 00010082
RAX: 0000000000000282 RBX: 0000000000000100 RCX: e6e3fc30ad33b200
RDX: ffff8880a3b0a240 RSI: 0000000000000000 RDI: ffffc90000e77f58
RBP: 0000000000000000 R08: ffffffff81beb57d R09: fffff520001cefc8
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffffc90000e77f58 R15: ffff8880a3b0a240
BUG: kernel NULL pointer dereference, address: 0000000000000282
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 0 
P4D 0 
Oops: 0002 [#2] PREEMPT SMP KASAN
CPU: 0 PID: 3897 Comm: systemd-udevd Tainted: G      D W         5.8.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:_etext+0x111d1b/0x1fe4cb
Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
RSP: 0018:ffffc90000e77f10 EFLAGS: 00010082
RAX: 0000000000000282 RBX: 0000000000000100 RCX: e6e3fc30ad33b200
RDX: ffff8880a3b0a240 RSI: 0000000000000000 RDI: ffffc90000e77f58
RBP: 0000000000000000 R08: ffffffff81beb57d R09: fffff520001cefc8
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffffc90000e77f58 R15: ffff8880a3b0a240
FS:  00007feed36768c0(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000282 CR3: 00000000a3fd3000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
Modules linked in:
CR2: 0000000000000282
---[ end trace 1160ac5a0c5f1310 ]---
RIP: 0010:_etext+0x111d1b/0x1fe4cb
Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <00> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
RSP: 0018:ffffc90006047f10 EFLAGS: 00010082
RAX: 0000000000000282 RBX: 0000000000004000 RCX: 45749efcbbc95d00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90006047f58
RBP: 0000000000000000 R08: ffffffff817a3370 R09: fffffbfff173a469
R10: fffffbfff173a469 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffffc90006047f58 R15: ffff888052a5c000
FS:  00007feed36768c0(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000282 CR3: 00000000a3fd3000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400