WARNING in reconnect

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-4.14	WARNING in reconnect_path	C	done	done	1	1774d	1834d	1/1	fixed on 2020/02/16 09:59
linux-4.19	WARNING in reconnect_path (2)				1	1833d	1833d	0/1	auto-closed as invalid on 2020/03/17 01:24
upstream	WARNING in reconnect_path nfs				6	2319d	2410d	0/28	auto-closed as invalid on 2019/02/22 10:34

RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f44a861a6d4 R13: 00000000004c5828 R14: 00000000004d9e48 R15: 0000000000000003 WARNING: CPU: 0 PID: 23578 at fs/exportfs/expfs.c:96 clear_disconnected fs/exportfs/expfs.c:96 [inline] WARNING: CPU: 0 PID: 23578 at fs/exportfs/expfs.c:96 reconnect_path+0x524/0x6c0 fs/exportfs/expfs.c:232 Kernel panic - not syncing: panic_on_warn set ... kobject: 'kvm' (00000000df1ad2b2): kobject_uevent_env CPU: 0 PID: 23578 Comm: syz-executor.2 Not tainted 4.19.53+ #25 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+0x263/0x507 kernel/panic.c:185 kobject: 'kvm' (00000000df1ad2b2): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop0' (0000000080ed97b5): kobject_uevent_env __warn.cold+0x20/0x4a kernel/panic.c:540 kobject: 'loop0' (0000000080ed97b5): fill_kobj_path: path = '/devices/virtual/block/loop0' report_bug+0x263/0x2b0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x204/0x360 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:1013 RIP: 0010:clear_disconnected fs/exportfs/expfs.c:96 [inline] RIP: 0010:reconnect_path+0x524/0x6c0 fs/exportfs/expfs.c:232 Code: 72 90 8d ff 48 8b 5d c8 e9 24 fc ff ff e8 b4 15 48 ff 48 8b 7d c8 e8 5b 90 8d ff e8 a6 15 48 ff e9 21 fe ff ff e8 9c 15 48 ff <0f> 0b e9 b4 fe ff ff e8 90 15 48 ff 48 8b 55 c0 48 b8 00 00 00 00 RSP: 0018:ffff8880a55dfbd8 EFLAGS: 00010246 RAX: 0000000000040000 RBX: 0000000000000020 RCX: ffffc9000a2a1000 RDX: 0000000000040000 RSI: ffffffff82230114 RDI: ffff8880948ee300 RBP: ffff8880a55dfc28 R08: ffff888080a56100 R09: 0000000000000000 R10: ffffed1015d04732 R11: ffff8880ae823993 R12: ffff8880948ee2c0 R13: dffffc0000000000 R14: ffff8880948ee2c0 R15: ffff88809814fe20 exportfs_decode_fh+0x4a8/0x6ee fs/exportfs/expfs.c:457 do_handle_to_path fs/fhandle.c:152 [inline] handle_to_path fs/fhandle.c:207 [inline] do_handle_open+0x332/0x6e0 fs/fhandle.c:223 __do_sys_open_by_handle_at fs/fhandle.c:265 [inline] __se_sys_open_by_handle_at fs/fhandle.c:256 [inline] __x64_sys_open_by_handle_at+0x76/0xb0 fs/fhandle.c:256 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4592c9 Code: fd b7 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 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f44a8619c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000130 RAX: ffffffffffffffda RBX: 00007f44a8619c90 RCX: 00000000004592c9 RDX: 0000000000000000 RSI: 0000000020000000 RDI: ffffffffffffff9c RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f44a861a6d4 R13: 00000000004c5828 R14: 00000000004d9e48 R15: 0000000000000003 Kernel Offset: disabled Rebooting in 86400 seconds..