WARNING: CPU: 0 PID: 27687 at mm/slab.h:376 cache_from_obj mm/slab.h:374 [inline]
WARNING: CPU: 0 PID: 27687 at mm/slab.h:376 cache_from_obj mm/slab.h:353 [inline]
WARNING: CPU: 0 PID: 27687 at mm/slab.h:376 kmem_cache_free.cold+0x1c/0x23 mm/slab.c:3757
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 27687 Comm: syz-executor.5 Not tainted 5.1.0-rc6+ #184
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+0x172/0x1f0 lib/dump_stack.c:113
 panic+0x2cb/0x65c kernel/panic.c:214
 __warn.cold+0x20/0x45 kernel/panic.c:571
 report_bug+0x263/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973
RIP: 0010:cache_from_obj mm/slab.h:376 [inline]
RIP: 0010:cache_from_obj mm/slab.h:353 [inline]
RIP: 0010:kmem_cache_free.cold+0x1c/0x23 mm/slab.c:3757
Code: e8 45 70 61 05 44 8b 6d c4 e9 f4 a5 ff ff 48 8b 48 58 48 c7 c6 c0 06 74 87 48 c7 c7 98 f7 58 88 49 8b 54 24 58 e8 14 6e b2 ff <0f> 0b e9 79 df ff ff 49 8b 4f 58 48 c7 c6 c0 06 74 87 48 c7 c7 98
RSP: 0018:ffff888064acfd30 EFLAGS: 00010282
RAX: 0000000000000051 RBX: ffff8880864baf08 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff815afcf6 RDI: ffffed100c959f98
RBP: ffff888064acfd50 R08: 0000000000000051 R09: ffffed1015d03ef1
R10: ffffed1015d03ef0 R11: ffff8880ae81f787 R12: ffff8880aa3a2080
R13: ffff8880685f8b40 R14: 0000000000000001 R15: 0000000000000000
 ep_unregister_pollwait.isra.0+0x120/0x3d0 fs/eventpoll.c:624
 ep_free+0xa0/0x220 fs/eventpoll.c:842
 ep_eventpoll_release+0x46/0x60 fs/eventpoll.c:874
 __fput+0x2e5/0x8d0 fs/file_table.c:278
 ____fput+0x16/0x20 fs/file_table.c:309
 task_work_run+0x14a/0x1c0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_usermode_loop+0x273/0x2c0 arch/x86/entry/common.c:166
 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
 do_syscall_64+0x52d/0x610 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458da9
Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fd056f9fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000119
RAX: 0000000000000001 RBX: 0000000000000006 RCX: 0000000000458da9
RDX: 0000000000000001 RSI: 0000000020000040 RDI: 0000000000000004
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000246 R12: 00007fd056fa06d4
R13: 00000000004bf389 R14: 00000000004d0578 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..