------------[ cut here ]------------
Memory cgroup charge failed because of no reclaimable memory! This looks like a misconfiguration or a kernel bug.
WARNING: CPU: 0 PID: 5370 at mm/memcontrol.c:1705 mem_cgroup_oom mm/memcontrol.c:1704 [inline]
WARNING: CPU: 0 PID: 5370 at mm/memcontrol.c:1705 try_charge+0x756/0x16b0 mm/memcontrol.c:2262
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 5370 Comm: syz-executor4 Not tainted 4.19.0-rc2+ #100
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+0x1c4/0x2b4 lib/dump_stack.c:113
 panic+0x238/0x4e7 kernel/panic.c:184
 __warn.cold.8+0x163/0x1ba kernel/panic.c:536
 report_bug+0x254/0x2d0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x1fc/0x4d0 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:993
RIP: 0010:mem_cgroup_oom mm/memcontrol.c:1704 [inline]
RIP: 0010:try_charge+0x756/0x16b0 mm/memcontrol.c:2262
Code: 85 a6 04 00 00 8b b5 c8 fd ff ff 44 89 f2 4c 89 ff e8 1e 4e ff ff 84 c0 0f 85 1f 08 00 00 48 c7 c7 80 ed 34 88 e8 aa fd 7f ff <0f> 0b 48 8b b5 c0 fd ff ff 48 8d 95 f8 fd ff ff 48 b8 00 00 00 00
RSP: 0018:ffff8801a70df038 EFLAGS: 00010286
RAX: 0000000000000000 RBX: ffff8801bf72cc00 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8164f825 RDI: 0000000000000005
RBP: ffff8801a70df2c8 R08: ffff8801a70d6300 R09: ffffed003b583ee2
R10: ffffed003b583ee2 R11: ffff8801dac1f717 R12: dffffc0000000000
R13: ffff8801a70df2a0 R14: 0000000000000000 R15: ffff8801bf72cc00
 memcg_kmem_charge_memcg+0x7c/0x120 mm/memcontrol.c:2592
 memcg_charge_slab mm/slab.h:283 [inline]
 kmem_getpages mm/slab.c:1415 [inline]
 cache_grow_begin+0x415/0x8c0 mm/slab.c:2677
 fallback_alloc+0x203/0x2e0 mm/slab.c:3219
 ____cache_alloc_node+0x1c7/0x1e0 mm/slab.c:3287
 __do_cache_alloc mm/slab.c:3356 [inline]
 slab_alloc mm/slab.c:3384 [inline]
 kmem_cache_alloc+0x1f8/0x730 mm/slab.c:3552
 alloc_inode+0xb2/0x190 fs/inode.c:212
 iget_locked+0x218/0x5b0 fs/inode.c:1168
 kernfs_get_inode+0x51/0x570 fs/kernfs/inode.c:269
 kernfs_iop_lookup+0x1a7/0x230 fs/kernfs/dir.c:1096
 __lookup_slow+0x2b5/0x540 fs/namei.c:1671
 lookup_slow+0x57/0x80 fs/namei.c:1688
 mountpoint_last fs/namei.c:2665 [inline]
 path_mountpoint+0x6e4/0x2190 fs/namei.c:2695
 filename_mountpoint+0x245/0x460 fs/namei.c:2717
 user_path_mountpoint_at+0x37/0x40 fs/namei.c:2747
 ksys_umount+0x1c9/0x12a0 fs/namespace.c:1639
 __do_sys_umount fs/namespace.c:1665 [inline]
 __se_sys_umount fs/namespace.c:1663 [inline]
 __x64_sys_umount+0x54/0x80 fs/namespace.c:1663
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45a0c7
Code: 44 00 00 b8 08 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 bd 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 9d 89 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffd5a29e978 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000045a0c7
RDX: 0000000000402e60 RSI: 0000000000000002 RDI: 00007ffd5a29ea20
RBP: 00000000000003eb R08: 0000000000000000 R09: 0000000000000010
R10: 000000000000000a R11: 0000000000000202 R12: 00007ffd5a29fa80
R13: 000000000292b940 R14: 0000000000000000 R15: badc0ffeebadface
Kernel Offset: disabled
Rebooting in 86400 seconds..