Hello,
syzbot found the following issue on:
HEAD commit: 358a161a6a9e Merge branch 'for-next/fixes' into for-kernelci
git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci
console output: https://syzkaller.appspot.com/x/log.txt?x=12115e1c480000
kernel config: https://syzkaller.appspot.com/x/.config?x=2573056c6a11f00d
dashboard link: https://syzkaller.appspot.com/bug?extid=89700d262ed1fb9f9351
compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2
userspace arch: arm64
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13abc0a6480000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1153e53c480000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/99d14e0f4c19/disk-358a161a.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/23275b612976/vmlinux-358a161a.xz
kernel image: https://storage.googleapis.com/syzbot-assets/ed79195fac61/Image-358a161a.gz.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/fdb7b054a0c8/mount_0.gz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: [email protected]
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall arch/arm64/kernel/syscall.c:52 [inline]
el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x48/0x140 arch/arm64/kernel/syscall.c:197
el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584
------------[ cut here ]------------
kernel BUG at fs/btrfs/extent-io-tree.c:379!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 4396 Comm: syz-executor224 Not tainted 6.2.0-rc3-syzkaller-16369-g358a161a6a9e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : set_state_bits fs/btrfs/extent-io-tree.c:379 [inline]
pc : __set_extent_bit+0x10c0/0x1174 fs/btrfs/extent-io-tree.c:1042
lr : set_state_bits fs/btrfs/extent-io-tree.c:379 [inline]
lr : __set_extent_bit+0x10c0/0x1174 fs/btrfs/extent-io-tree.c:1042
sp : ffff80000feab890
x29: ffff80000feab910 x28: ffff0000cafd9330 x27: ffff0000c9e6e300
x26: 0000000000000800 x25: 0000000000000000 x24: 000000000000ffff
x23: 000000000000ffff x22: ffff0000cafd9310 x21: 00000000fffffff4
x20: ffff0000cafd9310 x19: ffff0000c9e6e180 x18: 00000000000000c0
x17: 6e69676e45206574 x16: ffff80000dd86118 x15: ffff0000c4c30000
x14: 0000000000000000 x13: 00000000ffffffff x12: ffff0000c4c30000
x11: ff80800009263dec x10: 0000000000000000 x9 : ffff800009263dec
x8 : ffff0000c4c30000 x7 : ffff80000c11ee8c x6 : 0000000000000000
x5 : 00000000ffffffff x4 : 0000000000000a20 x3 : 0000000000000080
x2 : 0000000000000038 x1 : 00000000fffffff4 x0 : 0000000000000000
Call trace:
set_state_bits fs/btrfs/extent-io-tree.c:379 [inline]
__set_extent_bit+0x10c0/0x1174 fs/btrfs/extent-io-tree.c:1042
set_record_extent_bits+0x74/0xb0 fs/btrfs/extent-io-tree.c:1690
qgroup_reserve_data+0x134/0x374 fs/btrfs/qgroup.c:3758
btrfs_qgroup_reserve_data+0x40/0xd0 fs/btrfs/qgroup.c:3801
btrfs_zero_range+0x638/0x8c0 fs/btrfs/file.c:2997
btrfs_fallocate+0x584/0xdd0 fs/btrfs/file.c:3114
vfs_fallocate+0x328/0x38c fs/open.c:323
ioctl_preallocate+0x16c/0x1bc fs/ioctl.c:290
do_vfs_ioctl+0x123c/0x16a4 fs/ioctl.c:849
__do_sys_ioctl fs/ioctl.c:868 [inline]
__se_sys_ioctl fs/ioctl.c:856 [inline]
__arm64_sys_ioctl+0x98/0x140 fs/ioctl.c:856
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall arch/arm64/kernel/syscall.c:52 [inline]
el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x48/0x140 arch/arm64/kernel/syscall.c:197
el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584
Code: d4210000 97c12b8e d4210000 97c12b8c (d4210000)
---[ end trace 0000000000000000 ]---
---
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On Wed, Jan 11, 2023 at 02:51:47AM -0800, syzbot wrote:
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: 358a161a6a9e Merge branch 'for-next/fixes' into for-kernelci
> git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci
> console output: https://syzkaller.appspot.com/x/log.txt?x=12115e1c480000
> kernel config: https://syzkaller.appspot.com/x/.config?x=2573056c6a11f00d
> dashboard link: https://syzkaller.appspot.com/bug?extid=89700d262ed1fb9f9351
> compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2
> userspace arch: arm64
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13abc0a6480000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1153e53c480000
>
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/99d14e0f4c19/disk-358a161a.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/23275b612976/vmlinux-358a161a.xz
> kernel image: https://storage.googleapis.com/syzbot-assets/ed79195fac61/Image-358a161a.gz.xz
> mounted in repro: https://storage.googleapis.com/syzbot-assets/fdb7b054a0c8/mount_0.gz
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: [email protected]
>
> __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
> invoke_syscall arch/arm64/kernel/syscall.c:52 [inline]
> el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142
> do_el0_svc+0x48/0x140 arch/arm64/kernel/syscall.c:197
> el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637
> el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
> el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584
> ------------[ cut here ]------------
> kernel BUG at fs/btrfs/extent-io-tree.c:379!
set_state_bits()
ret = add_extent_changeset(state, bits_to_set, changeset, 1);
BUG_ON(ret < 0);
state->state |= bits_to_set;
ret is -ENOMEM (returned in register x1), known problem in general in
the state helpers everywhere, it's hard to fix as there's little change
of rollback.