BTRFS warning (device loop0): couldn't read tree root BTRFS warning (device loop0): try to load backup roots slot 3 BTRFS info (device loop0): rebuilding free space tree ------------[ cut here ]------------ WARNING: CPU: 0 PID: 8153 at fs/btrfs/extent-tree.c:3198 __btrfs_free_extent+0x1cac/0x2b74 fs/btrfs/extent-tree.c:-1 Modules linked in: CPU: 0 UID: 0 PID: 8153 Comm: syz.0.395 Not tainted 6.15.0-rc7-syzkaller-gd7fa1af5b33e #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __btrfs_free_extent+0x1cac/0x2b74 fs/btrfs/extent-tree.c:-1 lr : __btrfs_free_extent+0x424/0x2b74 fs/btrfs/extent-tree.c:3101 sp : ffff80009fb86a80 x29: ffff80009fb86be0 x28: 1fffe0001b16721f x27: ffff0000d8b390f8 x26: dfff800000000000 x25: ffff0000d8b390f0 x24: ffff0000f751c940 x23: 1fffe0001b16721e x22: 00000000fffffffe x21: 0000000000000000 x20: 000000000000000a x19: 00000000fffffffe x18: 1fffe0003386aa76 x17: ffff0001fea8a870 x16: ffff80008adbeaf4 x15: ffff700013f70cea x14: 0000000000000002 x13: 00000000fffffffe x12: 0000000000ff0100 x11: ffff0000d3523d00 x10: ffff80008fa844c0 x9 : 0000000000000005 x8 : 0000000000000000 x7 : ffff8000822735a8 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000002 x2 : 0000000000000002 x1 : ffff80008fa844a0 x0 : 00000000fffffffe Call trace: __btrfs_free_extent+0x1cac/0x2b74 fs/btrfs/extent-tree.c:-1 (P) run_delayed_tree_ref fs/btrfs/extent-tree.c:1747 [inline] run_one_delayed_ref fs/btrfs/extent-tree.c:1773 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1970 [inline] __btrfs_run_delayed_refs+0xb94/0x31c8 fs/btrfs/extent-tree.c:2040 btrfs_run_delayed_refs+0xc4/0x2e8 fs/btrfs/extent-tree.c:2152 btrfs_start_dirty_block_groups+0xa94/0xd1c fs/btrfs/block-group.c:3518 btrfs_commit_transaction+0x2a0/0x2a50 fs/btrfs/transaction.c:2239 btrfs_rebuild_free_space_tree+0x208/0x54c fs/btrfs/free-space-tree.c:1356 btrfs_start_pre_rw_mount+0xa78/0xe10 fs/btrfs/disk-io.c:3074 open_ctree+0x1b7c/0x229c fs/btrfs/disk-io.c:3614 btrfs_fill_super+0x184/0x2c0 fs/btrfs/super.c:976 btrfs_get_tree_super fs/btrfs/super.c:1901 [inline] btrfs_get_tree+0xc4c/0x1038 fs/btrfs/super.c:2096 vfs_get_tree+0x90/0x28c fs/super.c:1759 fc_mount+0x24/0xac fs/namespace.c:1289 btrfs_get_tree_subvol fs/btrfs/super.c:2054 [inline] btrfs_get_tree+0x4d4/0x1038 fs/btrfs/super.c:2097 vfs_get_tree+0x90/0x28c fs/super.c:1759 do_new_mount+0x228/0x814 fs/namespace.c:3881 path_mount+0x5b4/0xde0 fs/namespace.c:4208 do_mount fs/namespace.c:4221 [inline] __do_sys_mount fs/namespace.c:4432 [inline] __se_sys_mount fs/namespace.c:4409 [inline] __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4409 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 irq event stamp: 67994 hardirqs last enabled at (67993): [] kasan_quarantine_put+0x1a0/0x1c8 mm/kasan/quarantine.c:234 hardirqs last disabled at (67994): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:511 softirqs last enabled at (67788): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (67788): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (67765): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ BTRFS: Transaction aborted (error -117) WARNING: CPU: 1 PID: 8153 at fs/btrfs/extent-tree.c:3202 __btrfs_free_extent+0x1d18/0x2b74 fs/btrfs/extent-tree.c:3199 Modules linked in: CPU: 1 UID: 0 PID: 8153 Comm: syz.0.395 Tainted: G W 6.15.0-rc7-syzkaller-gd7fa1af5b33e #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __btrfs_free_extent+0x1d18/0x2b74 fs/btrfs/extent-tree.c:3199 lr : __btrfs_free_extent+0x1d18/0x2b74 fs/btrfs/extent-tree.c:3199 sp : ffff80009fb86a80 x29: ffff80009fb86be0 x28: 1fffe0001b16721f x27: ffff0000d8b390f8 x26: dfff800000000000 x25: ffff0000d8b390f0 x24: ffff0000f751c940 x23: 1fffe0001b16721e x22: 00000000fffffffe x21: 0000000000000000 x20: 0000000000000000 x19: 0000000000000000 x18: 1fffe0003386aa76 x17: 0000000000000000 x16: ffff80008ad27e48 x15: ffff700011e740c0 x14: 1ffff00011e740c0 x13: 0000000000000004 x12: ffffffffffffffff x11: 0000000000080000 x10: 000000000007ffff x9 : 1b9a7b7f6fd64e00 x8 : 1b9a7b7f6fd64e00 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80009fb863d8 x4 : ffff80008f415ba0 x3 : ffff800080548ef0 x2 : 0000000000000000 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: __btrfs_free_extent+0x1d18/0x2b74 fs/btrfs/extent-tree.c:3199 (P) run_delayed_tree_ref fs/btrfs/extent-tree.c:1747 [inline] run_one_delayed_ref fs/btrfs/extent-tree.c:1773 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1970 [inline] __btrfs_run_delayed_refs+0xb94/0x31c8 fs/btrfs/extent-tree.c:2040 btrfs_run_delayed_refs+0xc4/0x2e8 fs/btrfs/extent-tree.c:2152 btrfs_start_dirty_block_groups+0xa94/0xd1c fs/btrfs/block-group.c:3518 btrfs_commit_transaction+0x2a0/0x2a50 fs/btrfs/transaction.c:2239 btrfs_rebuild_free_space_tree+0x208/0x54c fs/btrfs/free-space-tree.c:1356 btrfs_start_pre_rw_mount+0xa78/0xe10 fs/btrfs/disk-io.c:3074 open_ctree+0x1b7c/0x229c fs/btrfs/disk-io.c:3614 btrfs_fill_super+0x184/0x2c0 fs/btrfs/super.c:976 btrfs_get_tree_super fs/btrfs/super.c:1901 [inline] btrfs_get_tree+0xc4c/0x1038 fs/btrfs/super.c:2096 vfs_get_tree+0x90/0x28c fs/super.c:1759 fc_mount+0x24/0xac fs/namespace.c:1289 btrfs_get_tree_subvol fs/btrfs/super.c:2054 [inline] btrfs_get_tree+0x4d4/0x1038 fs/btrfs/super.c:2097 vfs_get_tree+0x90/0x28c fs/super.c:1759 do_new_mount+0x228/0x814 fs/namespace.c:3881 path_mount+0x5b4/0xde0 fs/namespace.c:4208 do_mount fs/namespace.c:4221 [inline] __do_sys_mount fs/namespace.c:4432 [inline] __se_sys_mount fs/namespace.c:4409 [inline] __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4409 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 irq event stamp: 68242 hardirqs last enabled at (68241): [] __up_console_sem kernel/printk/printk.c:344 [inline] hardirqs last enabled at (68241): [] __console_unlock+0x70/0xc4 kernel/printk/printk.c:2885 hardirqs last disabled at (68242): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:511 softirqs last enabled at (68216): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (68216): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (68003): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]--- BTRFS: error (device loop0 state A) in __btrfs_free_extent:3202: errno=-117 Filesystem corrupted BTRFS info (device loop0 state EA): leaf 5308416 gen 8 total ptrs 14 free space 3210 owner 2 item 0 key (1048576 192 4194304) itemoff 3971 itemsize 24 block group used 4096 chunk_objectid 256 flags 2 item 1 key (1052672 169 0) itemoff 3938 itemsize 33 extent refs 1 gen 5 flags 2 ref#0: tree block backref root 3 item 2 key (5242880 169 0) itemoff 3905 itemsize 33 extent refs 1 gen 6 flags 2 ref#0: tree block backref root 1 item 3 key (5242880 192 1638400) itemoff 3881 itemsize 24 block group used 40960 chunk_objectid 256 flags 5 item 4 key (5246976 169 0) itemoff 3848 itemsize 33 extent refs 1 gen 5 flags 2 ref#0: tree block backref root 5 item 5 key (5251072 169 0) itemoff 3815 itemsize 33 extent refs 1 gen 6 flags 2 ref#0: tree block backref root 2 item 6 key (5259264 169 0) itemoff 3782 itemsize 33 extent refs 1 gen 5 flags 2 ref#0: tree block backref root 4 item 7 key (5263360 169 0) itemoff 3749 itemsize 33 extent refs 1 gen 6 flags 2 ref#0: tree block backref root 10 item 8 key (5279744 169 0) itemoff 3716 itemsize 33 extent refs 1 gen 5 flags 2 ref#0: tree block backref root 7 item 9 key (5287936 169 0) itemoff 3683 itemsize 33 extent refs 1 gen 5 flags 2 ref#0: tree block backref root 18446744073709551607 item 10 key (5292032 169 0) itemoff 3650 itemsize 33 extent refs 1 gen 5 flags 2 ref#0: tree block backref root 9 item 11 key (5304320 169 0) itemoff 3617 itemsize 33 extent refs 1 gen 8 flags 2 ref#0: tree block backref root 10 item 12 key (5308416 169 0) itemoff 3584 itemsize 33 extent refs 1 gen 8 flags 2 ref#0: tree block backref root 2 item 13 key (6881280 192 1638400) itemoff 3560 itemsize 24 block group used 0 chunk_objectid 256 flags 5 BTRFS critical (device loop0 state EA): unable to find ref byte nr 6881280 parent 0 root 10 owner 0 offset 0 slot 13 BTRFS error (device loop0 state EA): failed to run delayed ref for logical 6881280 num_bytes 4096 type 176 action 2 ref_mod 1: -2 BTRFS: error (device loop0 state EA) in btrfs_run_delayed_refs:2154: errno=-2 No such entry BTRFS warning (device loop0 state EA): failed to rebuild free space tree: -2 BTRFS error (device loop0 state EA): commit super ret -30 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 8153 at fs/btrfs/block-group.c:159 btrfs_put_block_group+0x2cc/0x360 fs/btrfs/block-group.c:159 Modules linked in: CPU: 1 UID: 0 PID: 8153 Comm: syz.0.395 Tainted: G W 6.15.0-rc7-syzkaller-gd7fa1af5b33e #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : btrfs_put_block_group+0x2cc/0x360 fs/btrfs/block-group.c:159 lr : btrfs_put_block_group+0x2cc/0x360 fs/btrfs/block-group.c:159 sp : ffff80009fb87450 x29: ffff80009fb87450 x28: 1fffe00018f56c2c x27: dfff800000000000 x26: ffff0000fa0461a8 x25: 0000000000000002 x24: 0000000000000001 x23: dfff800000000000 x22: 0000000000000000 x21: 0000000000000001 x20: 0000000000001000 x19: ffff0000c7ab6000 x18: 00000000ffffffff x17: ffff800092f39000 x16: ffff8000805290ac x15: 0000000000000001 x14: 1fffe00018f56c35 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000080000 x10: 000000000007ffff x9 : ffff8000a64fc000 x8 : 0000000000080000 x7 : ffff80008022b53c x6 : ffff80008022b738 x5 : ffff0000cf7a40e0 x4 : ffff80009fb87180 x3 : ffff8000824a9a60 x2 : 0000000000000001 x1 : 0000000000001000 x0 : 0000000000000000 Call trace: btrfs_put_block_group+0x2cc/0x360 fs/btrfs/block-group.c:159 (P) btrfs_free_block_groups+0x998/0xe18 fs/btrfs/block-group.c:4493 close_ctree+0x63c/0xae4 fs/btrfs/disk-io.c:4486 open_ctree+0x1fe4/0x229c fs/btrfs/disk-io.c:-1 btrfs_fill_super+0x184/0x2c0 fs/btrfs/super.c:976 btrfs_get_tree_super fs/btrfs/super.c:1901 [inline] btrfs_get_tree+0xc4c/0x1038 fs/btrfs/super.c:2096 vfs_get_tree+0x90/0x28c fs/super.c:1759 fc_mount+0x24/0xac fs/namespace.c:1289 btrfs_get_tree_subvol fs/btrfs/super.c:2054 [inline] btrfs_get_tree+0x4d4/0x1038 fs/btrfs/super.c:2097 vfs_get_tree+0x90/0x28c fs/super.c:1759 do_new_mount+0x228/0x814 fs/namespace.c:3881 path_mount+0x5b4/0xde0 fs/namespace.c:4208 do_mount fs/namespace.c:4221 [inline] __do_sys_mount fs/namespace.c:4432 [inline] __se_sys_mount fs/namespace.c:4409 [inline] __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4409 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 irq event stamp: 71210 hardirqs last enabled at (71209): [] kasan_quarantine_put+0x1a0/0x1c8 mm/kasan/quarantine.c:234 hardirqs last disabled at (71210): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:511 softirqs last enabled at (70052): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (70052): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (69929): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: CPU: 1 PID: 8153 at fs/btrfs/block-group.c:159 btrfs_put_block_group+0x2cc/0x360 fs/btrfs/block-group.c:159 Modules linked in: CPU: 1 UID: 0 PID: 8153 Comm: syz.0.395 Tainted: G W 6.15.0-rc7-syzkaller-gd7fa1af5b33e #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : btrfs_put_block_group+0x2cc/0x360 fs/btrfs/block-group.c:159 lr : btrfs_put_block_group+0x2cc/0x360 fs/btrfs/block-group.c:159 sp : ffff80009fb87450 x29: ffff80009fb87450 x28: 1fffe00018f56b2c x27: dfff800000000000 x26: ffff0000fa0461a8 x25: 0000000000000002 x24: 0000000000000001 x23: dfff800000000000 x22: 0000000000000000 x21: 0000000000000001 x20: 0000000000002000 x19: ffff0000c7ab5800 x18: 00000000ffffffff x17: ffff800092f39000 x16: ffff8000805290ac x15: 0000000000000001 x14: 1fffe00018f56b35 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000080000 x10: 000000000007ffff x9 : ffff8000a64fc000 x8 : 0000000000080000 x7 : 0000000000000000 x6 : 000000000000003f x5 : 0000000000000040 x4 : 0000000000000001 x3 : ffff8000824a9a60 x2 : 0000000000000001 x1 : 0000000000002000 x0 : 0000000000000000 Call trace: btrfs_put_block_group+0x2cc/0x360 fs/btrfs/block-group.c:159 (P) btrfs_free_block_groups+0x998/0xe18 fs/btrfs/block-group.c:4493 close_ctree+0x63c/0xae4 fs/btrfs/disk-io.c:4486 open_ctree+0x1fe4/0x229c fs/btrfs/disk-io.c:-1 btrfs_fill_super+0x184/0x2c0 fs/btrfs/super.c:976 btrfs_get_tree_super fs/btrfs/super.c:1901 [inline] btrfs_get_tree+0xc4c/0x1038 fs/btrfs/super.c:2096 vfs_get_tree+0x90/0x28c fs/super.c:1759 fc_mount+0x24/0xac fs/namespace.c:1289 btrfs_get_tree_subvol fs/btrfs/super.c:2054 [inline] btrfs_get_tree+0x4d4/0x1038 fs/btrfs/super.c:2097 vfs_get_tree+0x90/0x28c fs/super.c:1759 do_new_mount+0x228/0x814 fs/namespace.c:3881 path_mount+0x5b4/0xde0 fs/namespace.c:4208 do_mount fs/namespace.c:4221 [inline] __do_sys_mount fs/namespace.c:4432 [inline] __se_sys_mount fs/namespace.c:4409 [inline] __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4409 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 irq event stamp: 71526 hardirqs last enabled at (71525): [] kasan_quarantine_put+0x1a0/0x1c8 mm/kasan/quarantine.c:234 hardirqs last disabled at (71526): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:511 softirqs last enabled at (71492): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (71492): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (71215): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: CPU: 1 PID: 8153 at fs/btrfs/block-rsv.c:454 btrfs_release_global_block_rsv+0x218/0x22c fs/btrfs/block-rsv.c:454 Modules linked in: CPU: 1 UID: 0 PID: 8153 Comm: syz.0.395 Tainted: G W 6.15.0-rc7-syzkaller-gd7fa1af5b33e #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : btrfs_release_global_block_rsv+0x218/0x22c fs/btrfs/block-rsv.c:454 lr : btrfs_release_global_block_rsv+0x218/0x22c fs/btrfs/block-rsv.c:454 sp : ffff80009fb87460 x29: ffff80009fb87460 x28: 1fffe0001e560d2c x27: dfff800000000000 x26: ffff0000f2b06858 x25: 0000000000100000 x24: 0000000000000001 x23: ffff0000f2b06800 x22: 0000000000000000 x21: dfff800000000000 x20: 000000000005e000 x19: ffff0000f1fac400 x18: 00000000ffffffff x17: ffff0001fea8a870 x16: ffff8000805290ac x15: 0000000000000001 x14: 1fffe0001f408c01 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000080000 x10: 000000000007ffff x9 : ffff8000a64fc000 x8 : 0000000000080000 x7 : ffff8000824a5068 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000805291b4 x2 : 0000000000000001 x1 : 000000000005e000 x0 : 0000000000000000 Call trace: btrfs_release_global_block_rsv+0x218/0x22c fs/btrfs/block-rsv.c:454 (P) btrfs_free_block_groups+0xa44/0xe18 fs/btrfs/block-group.c:4499 close_ctree+0x63c/0xae4 fs/btrfs/disk-io.c:4486 open_ctree+0x1fe4/0x229c fs/btrfs/disk-io.c:-1 btrfs_fill_super+0x184/0x2c0 fs/btrfs/super.c:976 btrfs_get_tree_super fs/btrfs/super.c:1901 [inline] btrfs_get_tree+0xc4c/0x1038 fs/btrfs/super.c:2096 vfs_get_tree+0x90/0x28c fs/super.c:1759 fc_mount+0x24/0xac fs/namespace.c:1289 btrfs_get_tree_subvol fs/btrfs/super.c:2054 [inline] btrfs_get_tree+0x4d4/0x1038 fs/btrfs/super.c:2097 vfs_get_tree+0x90/0x28c fs/super.c:1759 do_new_mount+0x228/0x814 fs/namespace.c:3881 path_mount+0x5b4/0xde0 fs/namespace.c:4208 do_mount fs/namespace.c:4221 [inline] __do_sys_mount fs/namespace.c:4432 [inline] __se_sys_mount fs/namespace.c:4409 [inline] __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4409 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 irq event stamp: 71830 hardirqs last enabled at (71829): [] kasan_quarantine_put+0x1a0/0x1c8 mm/kasan/quarantine.c:234 hardirqs last disabled at (71830): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:511 softirqs last enabled at (71798): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (71798): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (71531): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: CPU: 1 PID: 8153 at fs/btrfs/block-rsv.c:455 btrfs_release_global_block_rsv+0x224/0x22c fs/btrfs/block-rsv.c:455 Modules linked in: CPU: 1 UID: 0 PID: 8153 Comm: syz.0.395 Tainted: G W 6.15.0-rc7-syzkaller-gd7fa1af5b33e #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : btrfs_release_global_block_rsv+0x224/0x22c fs/btrfs/block-rsv.c:455 lr : btrfs_release_global_block_rsv+0x224/0x22c fs/btrfs/block-rsv.c:455 sp : ffff80009fb87460 x29: ffff80009fb87460 x28: 1fffe0001e560d2c x27: dfff800000000000 x26: ffff0000f2b06858 x25: 0000000000100000 x24: 0000000000000001 x23: ffff0000f2b06800 x22: 0000000000000000 x21: dfff800000000000 x20: 000000000005e000 x19: 00000000000c0000 x18: 00000000ffffffff x17: ffff0001fea8a870 x16: ffff8000805290ac x15: 0000000000000001 x14: 1fffe0001f408c01 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000080000 x10: 000000000007ffff x9 : ffff8000a64fc000 x8 : 0000000000080000 x7 : ffff8000824a5068 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000805291b4 x2 : 0000000000000001 x1 : 00000000000c0000 x0 : 0000000000000000 Call trace: btrfs_release_global_block_rsv+0x224/0x22c fs/btrfs/block-rsv.c:455 (P) btrfs_free_block_groups+0xa44/0xe18 fs/btrfs/block-group.c:4499 close_ctree+0x63c/0xae4 fs/btrfs/disk-io.c:4486 open_ctree+0x1fe4/0x229c fs/btrfs/disk-io.c:-1 btrfs_fill_super+0x184/0x2c0 fs/btrfs/super.c:976 btrfs_get_tree_super fs/btrfs/super.c:1901 [inline] btrfs_get_tree+0xc4c/0x1038 fs/btrfs/super.c:2096 vfs_get_tree+0x90/0x28c fs/super.c:1759 fc_mount+0x24/0xac fs/namespace.c:1289 btrfs_get_tree_subvol fs/btrfs/super.c:2054 [inline] btrfs_get_tree+0x4d4/0x1038 fs/btrfs/super.c:2097 vfs_get_tree+0x90/0x28c fs/super.c:1759 do_new_mount+0x228/0x814 fs/namespace.c:3881 path_mount+0x5b4/0xde0 fs/namespace.c:4208 do_mount fs/namespace.c:4221 [inline] __do_sys_mount fs/namespace.c:4432 [inline] __se_sys_mount fs/namespace.c:4409 [inline] __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4409 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 irq event stamp: 71894 hardirqs last enabled at (71893): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:85 [inline] hardirqs last enabled at (71893): [] exit_to_kernel_mode+0xc0/0xf0 arch/arm64/kernel/entry-common.c:95 hardirqs last disabled at (71894): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:511 softirqs last enabled at (71888): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (71888): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (71835): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: CPU: 1 PID: 8153 at fs/btrfs/block-group.c:4511 btrfs_free_block_groups+0xac0/0xe18 fs/btrfs/block-group.c:4512 Modules linked in: CPU: 1 UID: 0 PID: 8153 Comm: syz.0.395 Tainted: G W 6.15.0-rc7-syzkaller-gd7fa1af5b33e #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : btrfs_free_block_groups+0xac0/0xe18 fs/btrfs/block-group.c:4512 lr : btrfs_free_block_groups+0xcf0/0xe18 fs/btrfs/block-group.c:4510 sp : ffff80009fb87490 x29: ffff80009fb874a0 x28: 1fffe0001e560d2c x27: dfff800000000000 x26: 1fffe0001e3f5a45 x25: 0000000000100000 x24: 000000000005e000 x23: ffff0000fa046000 x22: ffff0000fa0460b8 x21: ffff0000f1fadaf0 x20: ffff0000f1fad228 x19: ffff0000f1fac000 x18: 00000000ffffffff x17: ffff0001fea8a870 x16: ffff8000805290ac x15: 0000000000000001 x14: 1fffe0001f408c01 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000080000 x10: 000000000007ffff x9 : ffff8000a64fc000 x8 : 0000000000080000 x7 : ffff8000824a5068 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : ffff0000fa046000 x0 : ffff0000f1fac000 Call trace: btrfs_free_block_groups+0xac0/0xe18 fs/btrfs/block-group.c:4512 (P) close_ctree+0x63c/0xae4 fs/btrfs/disk-io.c:4486 open_ctree+0x1fe4/0x229c fs/btrfs/disk-io.c:-1 btrfs_fill_super+0x184/0x2c0 fs/btrfs/super.c:976 btrfs_get_tree_super fs/btrfs/super.c:1901 [inline] btrfs_get_tree+0xc4c/0x1038 fs/btrfs/super.c:2096 vfs_get_tree+0x90/0x28c fs/super.c:1759 fc_mount+0x24/0xac fs/namespace.c:1289 btrfs_get_tree_subvol fs/btrfs/super.c:2054 [inline] btrfs_get_tree+0x4d4/0x1038 fs/btrfs/super.c:2097 vfs_get_tree+0x90/0x28c fs/super.c:1759 do_new_mount+0x228/0x814 fs/namespace.c:3881 path_mount+0x5b4/0xde0 fs/namespace.c:4208 do_mount fs/namespace.c:4221 [inline] __do_sys_mount fs/namespace.c:4432 [inline] __se_sys_mount fs/namespace.c:4409 [inline] __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4409 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 irq event stamp: 72300 hardirqs last enabled at (72299): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:85 [inline] hardirqs last enabled at (72299): [] exit_to_kernel_mode+0xc0/0xf0 arch/arm64/kernel/entry-common.c:95 hardirqs last disabled at (72300): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:511 softirqs last enabled at (72294): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (72294): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (71899): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]--- BTRFS info (device loop0 state EA): space_info DATA+METADATA has 2838528 free, is not full BTRFS info (device loop0 state EA): space_info total=3276800, used=40960, pinned=0, reserved=12288, may_use=385024, readonly=0 zone_unusable=0 BTRFS info (device loop0 state EA): global_block_rsv: size 0 reserved 0 BTRFS info (device loop0 state EA): trans_block_rsv: size 0 reserved 0 BTRFS info (device loop0 state EA): chunk_block_rsv: size 0 reserved 0 BTRFS info (device loop0 state EA): delayed_block_rsv: size 0 reserved 0 BTRFS info (device loop0 state EA): delayed_refs_rsv: size 786432 reserved 385024 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 8153 at fs/btrfs/block-group.c:4523 btrfs_free_block_groups+0xcd4/0xe18 fs/btrfs/block-group.c:4524 Modules linked in: CPU: 1 UID: 0 PID: 8153 Comm: syz.0.395 Tainted: G W 6.15.0-rc7-syzkaller-gd7fa1af5b33e #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : btrfs_free_block_groups+0xcd4/0xe18 fs/btrfs/block-group.c:4524 lr : btrfs_free_block_groups+0xcc4/0xe18 fs/btrfs/block-group.c:4523 sp : ffff80009fb87490 x29: ffff80009fb874a0 x28: 1fffe0001e560d2c x27: dfff800000000000 x26: 1fffe0001e3f5a45 x25: 0000000000100000 x24: 0000000000003000 x23: ffff0000fa046000 x22: ffff0000fa0460b8 x21: ffff0000f1fadaf0 x20: ffff0000f1fad228 x19: ffff0000f1fac000 x18: 1fffe0003386f276 x17: ffff80008f31e000 x16: ffff80008adbe9e4 x15: 0000000000000001 x14: 1fffe00018f82220 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000080000 x10: 000000000007ffff x9 : ffff8000a64fc000 x8 : 0000000000080000 x7 : ffff800080485878 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : ffff0000fa046000 x0 : ffff0000f1fac000 Call trace: btrfs_free_block_groups+0xcd4/0xe18 fs/btrfs/block-group.c:4524 (P) close_ctree+0x63c/0xae4 fs/btrfs/disk-io.c:4486 open_ctree+0x1fe4/0x229c fs/btrfs/disk-io.c:-1 btrfs_fill_super+0x184/0x2c0 fs/btrfs/super.c:976 btrfs_get_tree_super fs/btrfs/super.c:1901 [inline] btrfs_get_tree+0xc4c/0x1038 fs/btrfs/super.c:2096 vfs_get_tree+0x90/0x28c fs/super.c:1759 fc_mount+0x24/0xac fs/namespace.c:1289 btrfs_get_tree_subvol fs/btrfs/super.c:2054 [inline] btrfs_get_tree+0x4d4/0x1038 fs/btrfs/super.c:2097 vfs_get_tree+0x90/0x28c fs/super.c:1759 do_new_mount+0x228/0x814 fs/namespace.c:3881 path_mount+0x5b4/0xde0 fs/namespace.c:4208 do_mount fs/namespace.c:4221 [inline] __do_sys_mount fs/namespace.c:4432 [inline] __se_sys_mount fs/namespace.c:4409 [inline] __arm64_sys_mount+0x3e8/0x468 fs/namespace.c:4409 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600 irq event stamp: 72688 hardirqs last enabled at (72687): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1525 [inline] hardirqs last enabled at (72687): [] finish_lock_switch+0xb0/0x1c0 kernel/sched/core.c:5130 hardirqs last disabled at (72688): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:511 softirqs last enabled at (72608): [] softirq_handle_end kernel/softirq.c:425 [inline] softirqs last enabled at (72608): [] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607 softirqs last disabled at (72599): [] __do_softirq+0x14/0x20 kernel/softirq.c:613 ---[ end trace 0000000000000000 ]--- BTRFS info (device loop0 state EA): space_info DATA+METADATA has 2838528 free, is not full BTRFS info (device loop0 state EA): space_info total=3276800, used=40960, pinned=0, reserved=12288, may_use=385024, readonly=0 zone_unusable=0 BTRFS info (device loop0 state EA): global_block_rsv: size 0 reserved 0 BTRFS info (device loop0 state EA): trans_block_rsv: size 0 reserved 0 BTRFS info (device loop0 state EA): chunk_block_rsv: size 0 reserved 0 BTRFS info (device loop0 state EA): delayed_block_rsv: size 0 reserved 0 BTRFS info (device loop0 state EA): delayed_refs_rsv: size 786432 reserved 385024 BTRFS error (device loop0 state EA): open_ctree failed: -2 loop0: detected capacity change from 0 to 32768 bcachefs (da441363-bb6a-4ab9-999b-c1f40db4fee2): Using encoding defined by superblock: utf8-12.1.0 bcachefs (da441363-bb6a-4ab9-999b-c1f40db4fee2): filesystem UUID already open bcachefs (da441363-bb6a-4ab9-999b-c1f40db4fee2): shutdown complete bcachefs: bch2_fs_get_tree() error: EINVAL