loop0: detected capacity change from 0 to 32768
 ... Log Wrap ... Log Wrap ... Log Wrap ...
warning: `syz.0.0' uses wireless extensions which will stop working for Wi-Fi 7 hardware; use nl80211
 ... Log Wrap ... Log Wrap ... Log Wrap ...
 ... Log Wrap ... Log Wrap ... Log Wrap ...
 ... Log Wrap ... Log Wrap ... Log Wrap ...
BUG at fs/jfs/jfs_dmap.c:3036 assert(bitno < 32)
------------[ cut here ]------------
kernel BUG at fs/jfs/jfs_dmap.c:3036!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5318 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:dbFindBits+0x19e/0x1a0 fs/jfs/jfs_dmap.c:3036
Code: e2 fd 90 0f 0b e8 82 8d 7a fe 48 c7 c7 c0 7d a4 8b 48 c7 c6 00 7b a4 8b ba dc 0b 00 00 48 c7 c1 a0 85 a4 8b e8 13 09 e2 fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41
RSP: 0018:ffffc9000d3def90 EFLAGS: 00010246
RAX: 0000000000000030 RBX: 0000000000000004 RCX: 153be9317719a400
RDX: ffffc9000e2ba000 RSI: 00000000000d7372 RDI: 00000000000d7373
RBP: 00000000ffffffff R08: ffffc9000d3deca7 R09: 1ffff92001a7bd94
R10: dffffc0000000000 R11: fffff52001a7bd95 R12: 0000000000000010
R13: 0000000000000000 R14: 0000000000000010 R15: 0000000000000020
FS:  00007fb563fff6c0(0000) GS:ffff88808d732000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005598b5b9e168 CR3: 0000000042837000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 dbAllocNear+0x244/0x3d0 fs/jfs/jfs_dmap.c:1243
 dbAlloc+0x933/0xba0 fs/jfs/jfs_dmap.c:832
 extBalloc fs/jfs/jfs_extent.c:336 [inline]
 extAlloc+0x54a/0xfb0 fs/jfs/jfs_extent.c:127
 jfs_get_block+0x346/0xab0 fs/jfs/inode.c:254
 get_more_blocks fs/direct-io.c:648 [inline]
 do_direct_IO fs/direct-io.c:936 [inline]
 __blockdev_direct_IO+0x16ff/0x3490 fs/direct-io.c:1243
 blockdev_direct_IO include/linux/fs.h:3509 [inline]
 jfs_direct_IO+0x119/0x220 fs/jfs/inode.c:339
 generic_file_direct_write+0x1db/0x3e0 mm/filemap.c:4176
 __generic_file_write_iter+0x11d/0x230 mm/filemap.c:4345
 generic_file_write_iter+0x117/0x550 mm/filemap.c:4385
 do_iter_readv_writev+0x623/0x8c0 fs/read_write.c:-1
 vfs_writev+0x31a/0x960 fs/read_write.c:1057
 do_pwritev fs/read_write.c:1153 [inline]
 __do_sys_pwritev2 fs/read_write.c:1211 [inline]
 __se_sys_pwritev2+0x179/0x290 fs/read_write.c:1202
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb56318f6c9
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:00007fb563fff038 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007fb5633e5fa0 RCX: 00007fb56318f6c9
RDX: 0000000000000001 RSI: 0000200000000240 RDI: 0000000000000006
RBP: 00007fb563211f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000007800 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb5633e6038 R14: 00007fb5633e5fa0 R15: 00007ffcd66c4908
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:dbFindBits+0x19e/0x1a0 fs/jfs/jfs_dmap.c:3036
Code: e2 fd 90 0f 0b e8 82 8d 7a fe 48 c7 c7 c0 7d a4 8b 48 c7 c6 00 7b a4 8b ba dc 0b 00 00 48 c7 c1 a0 85 a4 8b e8 13 09 e2 fd 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41
RSP: 0018:ffffc9000d3def90 EFLAGS: 00010246
RAX: 0000000000000030 RBX: 0000000000000004 RCX: 153be9317719a400
RDX: ffffc9000e2ba000 RSI: 00000000000d7372 RDI: 00000000000d7373
RBP: 00000000ffffffff R08: ffffc9000d3deca7 R09: 1ffff92001a7bd94
R10: dffffc0000000000 R11: fffff52001a7bd95 R12: 0000000000000010
R13: 0000000000000000 R14: 0000000000000010 R15: 0000000000000020
FS:  00007fb563fff6c0(0000) GS:ffff88808d732000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb563fde9a0 CR3: 0000000042837000 CR4: 0000000000352ef0