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kernel BUG at fs/jffs2/gc.c:226!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 3 UID: 0 PID: 7181 Comm: jffs2_gcd_mtd0 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:jffs2_garbage_collect_pass+0x18a0/0x1b40 fs/jffs2/gc.c:226
Code: 8b 73 14 0f b7 d5 48 c7 c7 c0 9b 31 8c e8 d8 68 9e fd 48 8b 7c 24 28 e8 fe e6 3d 08 90 0f 0b e8 e6 e9 3a 08 e8 71 d0 86 fe 90 <0f> 0b 48 8b 7c 24 58 e8 c4 65 f7 fe e9 70 e8 ff ff e8 5a d0 86 fe
RSP: 0018:ffffc90005c0fc08 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88805bb1c640 RCX: 0000000000000001
RDX: ffff88805d008000 RSI: ffffffff8383dfbf RDI: ffff88805d008000
RBP: 0000000000000006 R08: 0000000000000003 R09: 0000000000000005
R10: 0000000000000006 R11: 0000000000000000 R12: ffff88805bb1c654
R13: 0000000000000000 R14: 0000000000000004 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880d5ed1000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1ccc55da08 CR3: 0000000028d67000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 jffs2_garbage_collect_thread+0x28d/0x690 fs/jffs2/background.c:155
 kthread+0x373/0x450 kernel/kthread.c:436
 ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:jffs2_garbage_collect_pass+0x18a0/0x1b40 fs/jffs2/gc.c:226
Code: 8b 73 14 0f b7 d5 48 c7 c7 c0 9b 31 8c e8 d8 68 9e fd 48 8b 7c 24 28 e8 fe e6 3d 08 90 0f 0b e8 e6 e9 3a 08 e8 71 d0 86 fe 90 <0f> 0b 48 8b 7c 24 58 e8 c4 65 f7 fe e9 70 e8 ff ff e8 5a d0 86 fe
RSP: 0018:ffffc90005c0fc08 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88805bb1c640 RCX: 0000000000000001
RDX: ffff88805d008000 RSI: ffffffff8383dfbf RDI: ffff88805d008000
RBP: 0000000000000006 R08: 0000000000000003 R09: 0000000000000005
R10: 0000000000000006 R11: 0000000000000000 R12: ffff88805bb1c654
R13: 0000000000000000 R14: 0000000000000004 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880d5ed1000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1ccc55da08 CR3: 0000000028d67000 CR4: 0000000000352ef0