loop0: detected capacity change from 0 to 32768
ialloc: diAlloc returned -5!
loop0: detected capacity change from 32768 to 32767
BUG at fs/jfs/jfs_dmap.c:2980 assert(n < 4)
------------[ cut here ]------------
kernel BUG at fs/jfs/jfs_dmap.c:2980!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5321 Comm: syz.0.0 Not tainted 6.12.0-rc7-syzkaller-00189-ge8bdb3c8be08 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:dbFindLeaf+0x523/0x530 fs/jfs/jfs_dmap.c:2980
Code: e9 54 ff ff ff e8 3d f8 67 fe 48 c7 c7 40 35 43 8c 48 c7 c6 80 32 43 8c ba a4 0b 00 00 48 c7 c1 00 40 43 8c e8 6e d6 97 08 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000d5df930 EFLAGS: 00010246
RAX: 000000000000002b RBX: 0000000000000009 RCX: 0c8977d3b47f0a00
RDX: ffffc9000d391000 RSI: 0000000000000c8b RDI: 0000000000000c8c
RBP: 00000000ffffffff R08: ffffffff8174b13c R09: fffffbfff1cf9fd0
R10: dffffc0000000000 R11: fffffbfff1cf9fd0 R12: 0000000000000155
R13: 000000000000000a R14: 0000000008ffff09 R15: 000000000000000c
FS:  00007f11c90a46c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffdd6435de8 CR3: 0000000044592000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 dbAllocDmapLev+0xd3/0x4a0 fs/jfs/jfs_dmap.c:1969
 dbAllocCtl+0x113/0x920 fs/jfs/jfs_dmap.c:1825
 dbAllocAG+0x28f/0x10b0 fs/jfs/jfs_dmap.c:1364
 dbDiscardAG+0x352/0xa20 fs/jfs/jfs_dmap.c:1613
 jfs_ioc_trim+0x45a/0x6b0 fs/jfs/jfs_discard.c:105
 jfs_ioctl+0x2cd/0x3e0 fs/jfs/ioctl.c:131
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f11c837e719
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f11c90a4038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f11c8535f80 RCX: 00007f11c837e719
RDX: 0000000020000080 RSI: 00000000c0185879 RDI: 0000000000000004
RBP: 00007f11c83f175e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f11c8535f80 R15: 00007ffc05a2de98
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dbFindLeaf+0x523/0x530 fs/jfs/jfs_dmap.c:2980
Code: e9 54 ff ff ff e8 3d f8 67 fe 48 c7 c7 40 35 43 8c 48 c7 c6 80 32 43 8c ba a4 0b 00 00 48 c7 c1 00 40 43 8c e8 6e d6 97 08 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000d5df930 EFLAGS: 00010246
RAX: 000000000000002b RBX: 0000000000000009 RCX: 0c8977d3b47f0a00
RDX: ffffc9000d391000 RSI: 0000000000000c8b RDI: 0000000000000c8c
RBP: 00000000ffffffff R08: ffffffff8174b13c R09: fffffbfff1cf9fd0
R10: dffffc0000000000 R11: fffffbfff1cf9fd0 R12: 0000000000000155
R13: 000000000000000a R14: 0000000008ffff09 R15: 000000000000000c
FS:  00007f11c90a46c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffdd6435de8 CR3: 0000000044592000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400