loop0: detected capacity change from 0 to 32768 bcachefs (loop0): starting version 1.7: mi_btree_bitmap opts=metadata_checksum=none,data_checksum=none,compression=lz4,journal_flush_disabled,fsck,norecovery,nojournal_transaction_names,reconstruct_alloc,no_data_io bcachefs (loop0): recovering from clean shutdown, journal seq 10 bcachefs (loop0): Version upgrade required: Version upgrade from 0.24: unwritten_extents to 1.7: mi_btree_bitmap incomplete Doing incompatible version upgrade from 0.24: unwritten_extents to 1.13: inode_has_child_snapshots running recovery passes: check_allocations,check_alloc_info,check_lrus,check_btree_backpointers,check_backpointers_to_extents,check_extents_to_backpointers,check_alloc_to_lru_refs,bucket_gens_init,check_snapshot_trees,check_snapshots,check_subvols,check_subvol_children,delete_dead_snapshots,check_inodes,check_extents,check_indirect_extents,check_dirents,check_xattrs,check_root,check_unreachable_inodes,check_subvolume_structure,check_directory_structure,check_nlinks,set_fs_needs_rebalance bcachefs (loop0): dropping and reconstructing all alloc info bcachefs (loop0): insufficient writeable journal devices available: have 0, need 1 rw journal devs: loop0 bcachefs (loop0): check_topology... done bcachefs (loop0): accounting_read... done bcachefs (loop0): alloc_read... done bcachefs (loop0): stripes_read... done bcachefs (loop0): snapshots_read... done bcachefs (loop0): check_allocations... done bcachefs (loop0): going read-write bcachefs (loop0): done starting filesystem ------------[ cut here ]------------ kernel BUG at fs/bcachefs/alloc_foreground.c:493! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5325 Comm: syz.0.0 Not tainted 6.12.0-rc6-syzkaller-00192-gf1dce1f09380 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:bch2_bucket_alloc_freelist fs/bcachefs/alloc_foreground.c:493 [inline] RIP: 0010:bch2_bucket_alloc_trans+0x39ec/0x3a50 fs/bcachefs/alloc_foreground.c:648 Code: e8 59 43 f0 fd e9 f0 c7 ff ff 89 d9 80 e1 07 38 c1 0f 8c f3 fd ff ff 48 89 df e8 ef 41 f0 fd e9 e6 fd ff ff e8 75 7c 86 fd 90 <0f> 0b e8 6d 7c 86 fd 90 0f 0b e8 b5 f8 b8 07 f3 0f 1e fa e8 5c 7c RSP: 0018:ffffc9000d4c5b20 EFLAGS: 00010283 RAX: ffffffff840e5deb RBX: 0000000000000019 RCX: 0000000000040000 RDX: ffffc9000db19000 RSI: 00000000000004b2 RDI: 00000000000004b3 RBP: ffffc9000d4c6248 R08: ffffffff840e30b9 R09: 0000000000000000 R10: ffffc9000d4c6108 R11: fffff52001a98c26 R12: dffffc0000000000 R13: ffff8880522f8000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007faffbdd56c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020001000 CR3: 00000000431e6000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bch2_bucket_alloc_set_trans+0x517/0xd30 fs/bcachefs/alloc_foreground.c:808 __open_bucket_add_buckets+0x13d0/0x1ec0 fs/bcachefs/alloc_foreground.c:1057 open_bucket_add_buckets+0x33a/0x410 fs/bcachefs/alloc_foreground.c:1101 bch2_alloc_sectors_start_trans+0xce9/0x2030 __bch2_write+0x72b/0x5dd0 fs/bcachefs/io_write.c:1437 bch2_write+0x9b5/0x1760 fs/bcachefs/io_write.c:1631 closure_queue include/linux/closure.h:270 [inline] closure_call include/linux/closure.h:432 [inline] bch2_writepage_do_io fs/bcachefs/fs-io-buffered.c:449 [inline] bch2_writepages+0x27d/0x380 fs/bcachefs/fs-io-buffered.c:641 do_writepages+0x35d/0x870 mm/page-writeback.c:2683 filemap_fdatawrite_wbc+0x125/0x180 mm/filemap.c:398 __filemap_fdatawrite_range mm/filemap.c:431 [inline] file_write_and_wait_range+0x195/0x280 mm/filemap.c:788 bch2_fsync+0x13a/0x360 fs/bcachefs/fs-io.c:199 generic_write_sync include/linux/fs.h:2871 [inline] bch2_write_iter+0x222f/0x2440 fs/bcachefs/fs-io-buffered.c:1061 new_sync_write fs/read_write.c:590 [inline] vfs_write+0xaeb/0xd30 fs/read_write.c:683 ksys_write+0x183/0x2b0 fs/read_write.c:736 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7faffaf7e719 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007faffbdd5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007faffb135f80 RCX: 00007faffaf7e719 RDX: 0000000000001001 RSI: 0000000020000600 RDI: 000000000000000a RBP: 00007faffaff139e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007faffb135f80 R15: 00007fffc81cc3e8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:bch2_bucket_alloc_freelist fs/bcachefs/alloc_foreground.c:493 [inline] RIP: 0010:bch2_bucket_alloc_trans+0x39ec/0x3a50 fs/bcachefs/alloc_foreground.c:648 Code: e8 59 43 f0 fd e9 f0 c7 ff ff 89 d9 80 e1 07 38 c1 0f 8c f3 fd ff ff 48 89 df e8 ef 41 f0 fd e9 e6 fd ff ff e8 75 7c 86 fd 90 <0f> 0b e8 6d 7c 86 fd 90 0f 0b e8 b5 f8 b8 07 f3 0f 1e fa e8 5c 7c RSP: 0018:ffffc9000d4c5b20 EFLAGS: 00010283 RAX: ffffffff840e5deb RBX: 0000000000000019 RCX: 0000000000040000 RDX: ffffc9000db19000 RSI: 00000000000004b2 RDI: 00000000000004b3 RBP: ffffc9000d4c6248 R08: ffffffff840e30b9 R09: 0000000000000000 R10: ffffc9000d4c6108 R11: fffff52001a98c26 R12: dffffc0000000000 R13: ffff8880522f8000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007faffbdd56c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000558cb202b048 CR3: 00000000431e6000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400