[syzbot] [karma?] kernel BUG in folio_set_bh (3)

[syzbot <syzbot+32ec8b5bd050c78741c2@syzkaller.appspotmail.com>]

Hello,

syzbot found the following issue on:

HEAD commit:    1d5dcaa3bd65 Merge tag 'probes-fixes-v7.1-rc3' of git://gi..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1592ed06580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=7f195f6be48c12ec
dashboard link: https://syzkaller.appspot.com/bug?extid=32ec8b5bd050c78741c2
compiler:       Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-1d5dcaa3.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/2cb31960a181/vmlinux-1d5dcaa3.xz
kernel image: https://storage.googleapis.com/syzbot-assets/6d3969d0ce3d/bzImage-1d5dcaa3.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+32ec8b5bd050c78741c2@syzkaller.appspotmail.com

loop0: detected capacity change from 0 to 2048
 loop0: p2 p3 < > p4 < p5 >
loop0: partition table partially beyond EOD, truncated
loop0: p3 start 4284289 is beyond EOD, truncated
jfs: block size(32768) > page size(4096) not supported by filesystem
------------[ cut here ]------------
kernel BUG at fs/buffer.c:1479!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5328 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 04/01/2014
RIP: 0010:folio_set_bh+0x1dc/0x1e0 fs/buffer.c:1479
Code: 4c 89 e2 e8 b6 71 98 02 e9 42 ff ff ff e8 3c 80 6d ff 48 89 df 48 c7 c6 00 28 df 8b e8 6d bd cf fe 90 0f 0b e8 25 80 6d ff 90 <0f> 0b 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f
RSP: 0018:ffffc9000e2378f0 EFLAGS: 00010287
RAX: ffffffff8258511b RBX: ffffea0000391600 RCX: 0000000000100000
RDX: ffffc9000ec4a000 RSI: 0000000000001a43 RDI: 0000000000001a44
RBP: dffffc0000000000 R08: ffffea0000391607 R09: 1ffffd40000722c0
R10: dffffc0000000000 R11: fffff940000722c1 R12: 0000000000000003
R13: 0000000000008000 R14: ffff88804789f740 R15: 0000000000008000
FS:  00007fb7faee76c0(0000) GS:ffff88808c881000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f86657e22b0 CR3: 00000000128ba000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 folio_alloc_buffers+0x228/0x640 fs/buffer.c:849
 grow_dev_folio fs/buffer.c:979 [inline]
 grow_buffers fs/buffer.c:1020 [inline]
 __getblk_slow fs/buffer.c:1038 [inline]
 bdev_getblk+0x2cb/0x6e0 fs/buffer.c:1358
 __bread_gfp+0x89/0x3b0 fs/buffer.c:1412
 sb_bread include/linux/buffer_head.h:346 [inline]
 readSuper+0xdb/0x270 fs/jfs/jfs_mount.c:462
 chkSuper+0x5d/0xe00 fs/jfs/jfs_mount.c:299
 jfs_mount+0x4b/0x870 fs/jfs/jfs_mount.c:83
 jfs_fill_super+0x6bc/0xd80 fs/jfs/super.c:523
 get_tree_bdev_flags+0x431/0x4f0 fs/super.c:1694
 vfs_get_tree+0x92/0x2a0 fs/super.c:1754
 fc_mount fs/namespace.c:1193 [inline]
 do_new_mount_fc fs/namespace.c:3758 [inline]
 do_new_mount+0x341/0xd30 fs/namespace.c:3834
 do_mount fs/namespace.c:4167 [inline]
 __do_sys_mount fs/namespace.c:4383 [inline]
 __se_sys_mount+0x31d/0x420 fs/namespace.c:4360
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb7f9f9ce59
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:00007fb7faee6fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fb7fa215fa0 RCX: 00007fb7f9f9ce59
RDX: 0000200000000040 RSI: 0000200000000140 RDI: 0000200000000080
RBP: 00007fb7fa032d6f R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000c000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb7fa216038 R14: 00007fb7fa215fa0 R15: 00007ffff2e0f5c8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:folio_set_bh+0x1dc/0x1e0 fs/buffer.c:1479
Code: 4c 89 e2 e8 b6 71 98 02 e9 42 ff ff ff e8 3c 80 6d ff 48 89 df 48 c7 c6 00 28 df 8b e8 6d bd cf fe 90 0f 0b e8 25 80 6d ff 90 <0f> 0b 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f
RSP: 0018:ffffc9000e2378f0 EFLAGS: 00010287
RAX: ffffffff8258511b RBX: ffffea0000391600 RCX: 0000000000100000
RDX: ffffc9000ec4a000 RSI: 0000000000001a43 RDI: 0000000000001a44
RBP: dffffc0000000000 R08: ffffea0000391607 R09: 1ffffd40000722c0
R10: dffffc0000000000 R11: fffff940000722c1 R12: 0000000000000003
R13: 0000000000008000 R14: ffff88804789f740 R15: 0000000000008000
FS:  00007fb7faee76c0(0000) GS:ffff88808c881000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8a5bc8038f CR3: 00000000128ba000 CR4: 0000000000352ef0


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