gather_device_info: found more than 0 devices
WARNING: CPU: 2 PID: 31745 at fs/btrfs/volumes.c:4967 gather_device_info fs/btrfs/volumes.c:4967 [inline]
WARNING: CPU: 2 PID: 31745 at fs/btrfs/volumes.c:4967 btrfs_alloc_chunk+0x1a43/0x2000 fs/btrfs/volumes.c:5194
Kernel panic - not syncing: panic_on_warn set ...
CPU: 2 PID: 31745 Comm: syz-executor.1 Not tainted 5.9.0-rc7-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x198/0x1fd lib/dump_stack.c:118
 panic+0x382/0x7fb kernel/panic.c:231
 __warn.cold+0x20/0x4b kernel/panic.c:600
 report_bug+0x1bd/0x210 lib/bug.c:198
 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234
 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536
RIP: 0010:gather_device_info fs/btrfs/volumes.c:4967 [inline]
RIP: 0010:btrfs_alloc_chunk+0x1a43/0x2000 fs/btrfs/volumes.c:5194
Code: ff ff 44 8b 7c 24 78 4c 89 0c 24 e8 77 37 49 fe 4c 8b 0c 24 48 c7 c6 40 5a ca 88 48 c7 c7 c0 47 ca 88 4c 89 ca e8 df 74 19 fe <0f> 0b 4c 8b 0c 24 e9 f8 f0 ff ff 44 8b 7c 24 78 e8 48 37 49 fe 31
RSP: 0018:ffffc90001177278 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff888028697000 RCX: 0000000000000000
RDX: 0000000000040000 RSI: ffffffff815f59d5 RDI: fffff5200022ee41
RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffffff8d0c0b0f
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000002800000 R14: 0000000000010000 R15: 0000000000000001
 btrfs_chunk_alloc+0x3fe/0xaa0 fs/btrfs/block-group.c:3136
 find_free_extent_update_loop fs/btrfs/extent-tree.c:3796 [inline]
 find_free_extent+0x2090/0x2e60 fs/btrfs/extent-tree.c:4127
 btrfs_reserve_extent+0x166/0x460 fs/btrfs/extent-tree.c:4206
 btrfs_alloc_tree_block+0x203/0xee0 fs/btrfs/extent-tree.c:4603
 alloc_tree_block_no_bg_flush+0x1b6/0x250 fs/btrfs/ctree.c:987
 __btrfs_cow_block+0x3e0/0x10c0 fs/btrfs/ctree.c:1042
 btrfs_cow_block+0x2c1/0x8a0 fs/btrfs/ctree.c:1487
 commit_cowonly_roots+0x129/0xc70 fs/btrfs/transaction.c:1184
 btrfs_commit_transaction+0xde0/0x2830 fs/btrfs/transaction.c:2272
 btrfs_commit_super+0xc1/0x100 fs/btrfs/disk-io.c:4020
 close_ctree+0x2cd/0x6cb fs/btrfs/disk-io.c:4083
 generic_shutdown_super+0x144/0x370 fs/super.c:464
 kill_anon_super+0x36/0x60 fs/super.c:1108
 btrfs_kill_super+0x38/0x50 fs/btrfs/super.c:2265
 deactivate_locked_super+0x94/0x160 fs/super.c:335
 deactivate_super+0xad/0xd0 fs/super.c:366
 cleanup_mnt+0x3a3/0x530 fs/namespace.c:1118
 task_work_run+0xdd/0x190 kernel/task_work.c:141
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:165 [inline]
 exit_to_user_mode_prepare+0x1e1/0x200 kernel/entry/common.c:192
 syscall_exit_to_user_mode+0x7e/0x2e0 kernel/entry/common.c:267
 __do_fast_syscall_32+0x6c/0x90 arch/x86/entry/common.c:138
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:160
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf7fea549
Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000f55e3f00 EFLAGS: 00000292 ORIG_RAX: 0000000000000015
RAX: ffffffffffffffea RBX: 00000000f55e3f70 RCX: 0000000020000100
RDX: 0000000020000000 RSI: 0000000000000000 RDI: 00000000f55e3fb0
RBP: 00000000f55e3fb0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..