Hello, syzbot found the following issue on: HEAD commit: 2030579113a1 Add linux-next specific files for 20231020 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=1370ea89680000 kernel config: https://syzkaller.appspot.com/x/.config?x=37404d76b3c8840e dashboard link: https://syzkaller.appspot.com/bug?extid=532944658f9546cd0135 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/a99a981e5d78/disk-20305791.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/073a5ba6a2a6/vmlinux-20305791.xz kernel image: https://storage.googleapis.com/syzbot-assets/c7c1a7107f7b/bzImage-20305791.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+532944658f9546cd0135@xxxxxxxxxxxxxxxxxxxxxxxxx assertion failed: space_info->reclaim_size >= ticket->bytes, in fs/btrfs/space-info.c:436 ------------[ cut here ]------------ kernel BUG at fs/btrfs/space-info.c:436! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 18842 Comm: syz-executor.2 Not tainted 6.6.0-rc6-next-20231020-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 RIP: 0010:remove_ticket fs/btrfs/space-info.c:436 [inline] RIP: 0010:remove_ticket+0x1cf/0x240 fs/btrfs/space-info.c:431 Code: 5f e9 f5 58 ed fd e8 f0 58 ed fd b9 b4 01 00 00 48 c7 c2 80 32 d9 8a 48 c7 c6 c0 32 d9 8a 48 c7 c7 20 33 d9 8a e8 a1 1c d0 fd <0f> 0b 48 89 ef e8 57 1f 44 fe e9 56 fe ff ff 48 89 ef e8 ea 1f 44 RSP: 0018:ffffc900142a75e8 EFLAGS: 00010282 RAX: 0000000000000059 RBX: ffffffffffffc000 RCX: ffffc900098f1000 RDX: 0000000000000000 RSI: ffffffff816c4d42 RDI: 0000000000000005 RBP: 000000000001c000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff8880286da000 R13: ffff8880286da0e0 R14: ffffc900142c7738 R15: ffffc900133ef730 FS: 00007fd63d5966c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005556cb3e3668 CR3: 0000000020c93000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> btrfs_try_granting_tickets+0x2c6/0x450 fs/btrfs/space-info.c:468 btrfs_space_info_free_bytes_may_use fs/btrfs/space-info.h:232 [inline] block_rsv_release_bytes fs/btrfs/block-rsv.c:154 [inline] btrfs_block_rsv_release+0x5b3/0x6c0 fs/btrfs/block-rsv.c:295 btrfs_delayed_refs_rsv_release+0xbb/0x130 fs/btrfs/delayed-ref.c:75 btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:2038 [inline] __btrfs_run_delayed_refs+0x6c3/0x4020 fs/btrfs/extent-tree.c:2106 btrfs_run_delayed_refs+0x1a6/0x320 fs/btrfs/extent-tree.c:2218 btrfs_commit_transaction+0x783/0x3b20 fs/btrfs/transaction.c:2237 btrfs_sync_fs+0x13b/0x780 fs/btrfs/super.c:1185 sync_filesystem fs/sync.c:66 [inline] sync_filesystem+0x1c5/0x280 fs/sync.c:30 btrfs_remount+0x1ff/0x17b0 fs/btrfs/super.c:1649 legacy_reconfigure+0x119/0x180 fs/fs_context.c:685 reconfigure_super+0x44f/0xb10 fs/super.c:1143 do_remount fs/namespace.c:2884 [inline] path_mount+0x16ed/0x1ed0 fs/namespace.c:3656 do_mount fs/namespace.c:3677 [inline] __do_sys_mount fs/namespace.c:3886 [inline] __se_sys_mount fs/namespace.c:3863 [inline] __x64_sys_mount+0x293/0x310 fs/namespace.c:3863 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7fd63c87e1ea Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd63d595ee8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fd63d595f80 RCX: 00007fd63c87e1ea RDX: 0000000020000180 RSI: 0000000020000140 RDI: 0000000000000000 RBP: 0000000020000180 R08: 00007fd63d595f80 R09: 00000000039600ac R10: 00000000039600ac R11: 0000000000000206 R12: 0000000020000140 R13: 00007fd63d595f40 R14: 0000000000000000 R15: 0000000020000080 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:remove_ticket fs/btrfs/space-info.c:436 [inline] RIP: 0010:remove_ticket+0x1cf/0x240 fs/btrfs/space-info.c:431 Code: 5f e9 f5 58 ed fd e8 f0 58 ed fd b9 b4 01 00 00 48 c7 c2 80 32 d9 8a 48 c7 c6 c0 32 d9 8a 48 c7 c7 20 33 d9 8a e8 a1 1c d0 fd <0f> 0b 48 89 ef e8 57 1f 44 fe e9 56 fe ff ff 48 89 ef e8 ea 1f 44 RSP: 0018:ffffc900142a75e8 EFLAGS: 00010282 RAX: 0000000000000059 RBX: ffffffffffffc000 RCX: ffffc900098f1000 RDX: 0000000000000000 RSI: ffffffff816c4d42 RDI: 0000000000000005 RBP: 000000000001c000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff8880286da000 R13: ffff8880286da0e0 R14: ffffc900142c7738 R15: ffffc900133ef730 FS: 00007fd63d5966c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005556cb3e3668 CR3: 0000000020c93000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. If the bug is already fixed, let syzbot know by replying with: #syz fix: exact-commit-title If you want to overwrite bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
