[syzbot] [btrfs?] kernel BUG in set_state_bits (2)

[syzbot <syzbot+64579ad11e26758151bc@syzkaller.appspotmail.com>]

Hello,

syzbot found the following issue on:

HEAD commit:    02dc699f83d0 Merge tag 'kbuild-fixes-7.2-1' of git://git.k..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1563cc9e580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=c05be6c9b0d36cb9
dashboard link: https://syzkaller.appspot.com/bug?extid=64579ad11e26758151bc
compiler:       Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8

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-02dc699f.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/e86689246460/vmlinux-02dc699f.xz
kernel image: https://storage.googleapis.com/syzbot-assets/f3bbc4a2d804/bzImage-02dc699f.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+64579ad11e26758151bc@syzkaller.appspotmail.com

loop0: detected capacity change from 0 to 32768
BTRFS: device fsid 395ef67a-297e-477c-816d-cd80a5b93e5d devid 1 transid 8 /dev/loop0 (7:0) scanned by syz.0.0 (5327)
BTRFS info (device loop0): first mount of filesystem 395ef67a-297e-477c-816d-cd80a5b93e5d
BTRFS info (device loop0): using sha256 checksum algorithm
BTRFS warning (device loop0): space cache v1 is being deprecated and will be removed in a future release, please use -o space_cache=v2
BTRFS info (device loop0): rebuilding free space tree
BTRFS info (device loop0): disabling free space tree
BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE (0x1)
BTRFS info (device loop0): clearing compat-ro feature flag for FREE_SPACE_TREE_VALID (0x2)
BTRFS info (device loop0): enabling ssd optimizations
BTRFS info (device loop0): enabling disk space caching
BTRFS info (device loop0): force clearing of disk cache
BTRFS info (device loop0): enabling auto defrag
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 1
CPU: 0 UID: 0 PID: 5327 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
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 fail_dump lib/fault-inject.c:73 [inline]
 should_fail_ex+0x40c/0x560 lib/fault-inject.c:174
 should_failslab+0xa8/0x100 mm/failslab.c:46
 slab_pre_alloc_hook mm/slub.c:4539 [inline]
 slab_alloc_node mm/slub.c:4897 [inline]
 __kmalloc_cache_noprof+0xa8/0x660 mm/slub.c:5485
 _kmalloc_noprof include/linux/slab.h:988 [inline]
 ulist_add_merge+0x18d/0x4b0 fs/btrfs/ulist.c:222
 add_extent_changeset fs/btrfs/extent-io-tree.c:203 [inline]
 set_state_bits+0x1d3/0x3a0 fs/btrfs/extent-io-tree.c:400
 set_extent_bit+0x904/0x1c60 fs/btrfs/extent-io-tree.c:1217
 btrfs_set_record_extent_bits+0x50/0x90 fs/btrfs/extent-io-tree.c:1959
 qgroup_reserve_data+0x26e/0x8e0 fs/btrfs/qgroup.c:4279
 btrfs_qgroup_reserve_data+0x2e/0xb0 fs/btrfs/qgroup.c:4323
 btrfs_check_data_free_space+0x2e0/0x490 fs/btrfs/delalloc-space.c:166
 reserve_space fs/btrfs/file.c:1114 [inline]
 copy_one_range fs/btrfs/file.c:1212 [inline]
 btrfs_buffered_write+0x4b2/0x1690 fs/btrfs/file.c:1376
 btrfs_do_write_iter+0x300/0x790 fs/btrfs/file.c:1452
 do_iter_readv_writev+0x612/0x8c0 fs/read_write.c:-1
 vfs_writev+0x343/0x990 fs/read_write.c:1058
 do_pwritev fs/read_write.c:1154 [inline]
 __do_sys_pwritev2 fs/read_write.c:1212 [inline]
 __se_sys_pwritev2+0x177/0x2a0 fs/read_write.c:1203
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f15bf79e019
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:00007f15c05c9fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007f15bfa25fa0 RCX: 00007f15bf79e019
RDX: 0000000000000001 RSI: 00002000000001c0 RDI: 0000000000000006
RBP: 00007f15c05ca050 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000e7b R11: 0000000000000246 R12: 0000000000000001
R13: 00007f15bfa26038 R14: 00007f15bfa25fa0 R15: 00007fff02c34098
 </TASK>
BTRFS critical (device loop0): panic in set_state_bits:402: extent io tree error on add_extent_changeset state start 20480 end 61439 (errno=-12 Out of memory)
------------[ cut here ]------------
kernel BUG at fs/btrfs/extent-io-tree.c:402!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5327 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:set_state_bits+0x396/0x3a0 fs/btrfs/extent-io-tree.c:402
Code: 46 25 8e ba 92 01 00 00 44 89 e9 49 c7 c0 20 55 3b 8c 49 c7 c1 80 55 3b 8c 48 8b 04 24 ff 30 53 e8 4f e3 ed fc 48 83 c4 10 90 <0f> 0b 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000f8775d0 EFLAGS: 00010282
RAX: f2fc0c23b03a6e00 RBX: 0000000000005000 RCX: 1ffff92001f0ee9c
RDX: 0000000000000003 RSI: ffffffff8e4b7282 RDI: ffff88803ee18000
RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1d3ca24 R12: ffff88801acecad0
R13: 00000000fffffff4 R14: ffff88800e73c000 R15: 1ffff1100359d971
FS:  00007f15c05ca6c0(0000) GS:ffff88808c53f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000f000 CR3: 000000004365a000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 set_extent_bit+0x904/0x1c60 fs/btrfs/extent-io-tree.c:1217
 btrfs_set_record_extent_bits+0x50/0x90 fs/btrfs/extent-io-tree.c:1959
 qgroup_reserve_data+0x26e/0x8e0 fs/btrfs/qgroup.c:4279
 btrfs_qgroup_reserve_data+0x2e/0xb0 fs/btrfs/qgroup.c:4323
 btrfs_check_data_free_space+0x2e0/0x490 fs/btrfs/delalloc-space.c:166
 reserve_space fs/btrfs/file.c:1114 [inline]
 copy_one_range fs/btrfs/file.c:1212 [inline]
 btrfs_buffered_write+0x4b2/0x1690 fs/btrfs/file.c:1376
 btrfs_do_write_iter+0x300/0x790 fs/btrfs/file.c:1452
 do_iter_readv_writev+0x612/0x8c0 fs/read_write.c:-1
 vfs_writev+0x343/0x990 fs/read_write.c:1058
 do_pwritev fs/read_write.c:1154 [inline]
 __do_sys_pwritev2 fs/read_write.c:1212 [inline]
 __se_sys_pwritev2+0x177/0x2a0 fs/read_write.c:1203
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f15bf79e019
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:00007f15c05c9fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007f15bfa25fa0 RCX: 00007f15bf79e019
RDX: 0000000000000001 RSI: 00002000000001c0 RDI: 0000000000000006
RBP: 00007f15c05ca050 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000e7b R11: 0000000000000246 R12: 0000000000000001
R13: 00007f15bfa26038 R14: 00007f15bfa25fa0 R15: 00007fff02c34098
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:set_state_bits+0x396/0x3a0 fs/btrfs/extent-io-tree.c:402
Code: 46 25 8e ba 92 01 00 00 44 89 e9 49 c7 c0 20 55 3b 8c 49 c7 c1 80 55 3b 8c 48 8b 04 24 ff 30 53 e8 4f e3 ed fc 48 83 c4 10 90 <0f> 0b 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000f8775d0 EFLAGS: 00010282
RAX: f2fc0c23b03a6e00 RBX: 0000000000005000 RCX: 1ffff92001f0ee9c
RDX: 0000000000000003 RSI: ffffffff8e4b7282 RDI: ffff88803ee18000
RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1d3ca24 R12: ffff88801acecad0
R13: 00000000fffffff4 R14: ffff88800e73c000 R15: 1ffff1100359d971
FS:  00007f15c05ca6c0(0000) GS:ffff88808c53f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000f000 CR3: 000000004365a000 CR4: 0000000000352ef0


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