BUG at fs/jfs/jfs_dmap.c:3070 assert(n < 4)
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kernel BUG at fs/jfs/jfs_dmap.c:3070!
Oops: invalid opcode: 0000 [#1] SMP KASAN PTI
CPU: 1 UID: 0 PID: 9089 Comm: syz.5.790 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:dbFindLeaf+0x51d/0x520
Code: e9 4c ff ff ff e8 a3 c0 66 fe 48 c7 c7 20 b7 0b 8c 48 c7 c6 60 b4 0b 8c ba fe 0b 00 00 48 c7 c1 40 c2 0b 8c e8 54 ae c8 fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57
RSP: 0018:ffffc9000a06faa8 EFLAGS: 00010246
RAX: 000000000000002b RBX: 0000000000000000 RCX: 6fa4a92410e83400
RDX: ffffc9002158d000 RSI: 0000000000001f29 RDI: 0000000000001f2a
RBP: 0000000000000003 R08: ffff8881210247d3 R09: 1ffff110242048fa
R10: dffffc0000000000 R11: ffffed10242048fb R12: 000000000000000a
R13: 0000000000000008 R14: 0000000000000005 R15: 0000000000000155
FS:  00007f81372ac6c0(0000) GS:ffff8882a928d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2dc15ff8 CR3: 000000010fa9e000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 dbAllocDmapLev+0x60/0x3c0
 dbAllocCtl+0x14a/0x9c0
 dbAllocAG+0xba1/0xf80
 dbDiscardAG+0x2da/0x8f0
 jfs_ioc_trim+0x429/0x690
 jfs_ioctl+0x28e/0x3b0
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f813639cdd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f81372ac028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f8136615fa0 RCX: 00007f813639cdd9
RDX: 0000200000000100 RSI: 00000000c0185879 RDI: 0000000000000008
RBP: 00007f8136432d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8136616038 R14: 00007f8136615fa0 R15: 00007ffeb8fb0488
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dbFindLeaf+0x51d/0x520
Code: e9 4c ff ff ff e8 a3 c0 66 fe 48 c7 c7 20 b7 0b 8c 48 c7 c6 60 b4 0b 8c ba fe 0b 00 00 48 c7 c1 40 c2 0b 8c e8 54 ae c8 fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57
RSP: 0018:ffffc9000a06faa8 EFLAGS: 00010246
RAX: 000000000000002b RBX: 0000000000000000 RCX: 6fa4a92410e83400
RDX: ffffc9002158d000 RSI: 0000000000001f29 RDI: 0000000000001f2a
RBP: 0000000000000003 R08: ffff8881210247d3 R09: 1ffff110242048fa
R10: dffffc0000000000 R11: ffffed10242048fb R12: 000000000000000a
R13: 0000000000000008 R14: 0000000000000005 R15: 0000000000000155
FS:  00007f81372ac6c0(0000) GS:ffff88818dc8d000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f813728aff8 CR3: 000000010fa9e000 CR4: 00000000000006f0
