syzbot |
sign-in | mailing list | source | docs |
| 🐞 Open [979] ≡ Subsystems 🐞 Fixed [5236] 🐞 Invalid [12499] ⬇ Missing Backports [83] 📈 Kernel Health 📈 Bug Lifetimes 📈 Fuzzing 📈 Crashes | 💬 Send us feedback |
deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c ===================================================== ===================================================== BUG: KMSAN: uninit-value in check_extent_item fs/btrfs/tree-checker.c:1263 [inline] BUG: KMSAN: uninit-value in check_leaf_item fs/btrfs/tree-checker.c:1569 [inline] BUG: KMSAN: uninit-value in check_leaf+0x35de/0xc1d0 fs/btrfs/tree-checker.c:1709 CPU: 0 PID: 32330 Comm: syz-executor.5 Tainted: G B W 5.12.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x24c/0x2e0 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197 check_extent_item fs/btrfs/tree-checker.c:1263 [inline] check_leaf_item fs/btrfs/tree-checker.c:1569 [inline] check_leaf+0x35de/0xc1d0 fs/btrfs/tree-checker.c:1709 btrfs_check_leaf_full+0x4a/0x60 fs/btrfs/tree-checker.c:1724 csum_dirty_buffer fs/btrfs/disk-io.c:486 [inline] btree_csum_one_bio+0xcca/0xfe0 fs/btrfs/disk-io.c:853 btrfs_submit_metadata_bio+0x949/0xcd0 fs/btrfs/disk-io.c:901 submit_one_bio fs/btrfs/extent_io.c:178 [inline] flush_write_bio fs/btrfs/extent_io.c:205 [inline] btree_write_cache_pages+0x20a4/0x2270 fs/btrfs/extent_io.c:4382 btree_writepages+0xce/0x2e0 fs/btrfs/disk-io.c:966 do_writepages+0x15f/0x420 mm/page-writeback.c:2352 __filemap_fdatawrite_range+0x59c/0x600 mm/filemap.c:424 filemap_fdatawrite_range+0x9d/0xb0 mm/filemap.c:444 btrfs_write_marked_extents+0x464/0x830 fs/btrfs/transaction.c:1050 btrfs_write_and_wait_transaction fs/btrfs/transaction.c:1162 [inline] btrfs_commit_transaction+0x4045/0x5640 fs/btrfs/transaction.c:2344 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7fc2549 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 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000ffd7479c EFLAGS: 00000296 ORIG_RAX: 0000000000000034 RAX: 0000000000000000 RBX: 00000000ffd74840 RCX: 0000000000000002 RDX: 000000000816c000 RSI: 0000000000000000 RDI: 00000000080e9e6a RBP: 00000000ffd74840 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226 kmsan_memmove_metadata+0xe/0x10 mm/kmsan/kmsan.c:251 __msan_memmove+0x46/0x60 mm/kmsan/kmsan_instr.c:92 copy_pages fs/btrfs/extent_io.c:6521 [inline] memcpy_extent_buffer+0x696/0xbc0 fs/btrfs/extent_io.c:6552 memmove_extent_buffer+0x260/0xd30 fs/btrfs/extent_io.c:6577 setup_items_for_insert+0x1258/0x1a00 fs/btrfs/ctree.c:4746 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x5df/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226 kmsan_memmove_metadata+0xe/0x10 mm/kmsan/kmsan.c:251 __msan_memmove+0x46/0x60 mm/kmsan/kmsan_instr.c:92 copy_pages fs/btrfs/extent_io.c:6521 [inline] memcpy_extent_buffer+0x696/0xbc0 fs/btrfs/extent_io.c:6552 memmove_extent_buffer+0x260/0xd30 fs/btrfs/extent_io.c:6577 setup_items_for_insert+0x1258/0x1a00 fs/btrfs/ctree.c:4746 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x5df/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226 kmsan_memmove_metadata+0xe/0x10 mm/kmsan/kmsan.c:251 __msan_memmove+0x46/0x60 mm/kmsan/kmsan_instr.c:92 copy_pages fs/btrfs/extent_io.c:6521 [inline] memcpy_extent_buffer+0x696/0xbc0 fs/btrfs/extent_io.c:6552 memmove_extent_buffer+0x260/0xd30 fs/btrfs/extent_io.c:6577 setup_items_for_insert+0x1258/0x1a00 fs/btrfs/ctree.c:4746 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x2cc/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was created at: kmsan_save_stack_with_flags+0x3c/0x90 mm/kmsan/kmsan.c:121 kmsan_alloc_page+0xd0/0x1e0 mm/kmsan/kmsan_shadow.c:274 __alloc_pages_nodemask+0x827/0xf90 mm/page_alloc.c:5044 alloc_pages_current+0x7b6/0xb60 mm/mempolicy.c:2277 alloc_pages include/linux/gfp.h:561 [inline] __page_cache_alloc mm/filemap.c:978 [inline] pagecache_get_page+0x111d/0x2040 mm/filemap.c:1797 find_or_create_page include/linux/pagemap.h:405 [inline] alloc_extent_buffer+0x8f8/0x33d0 fs/btrfs/extent_io.c:5618 btrfs_find_create_tree_block+0xb6/0xd0 fs/btrfs/disk-io.c:1024 btrfs_init_new_buffer fs/btrfs/extent-tree.c:4743 [inline] btrfs_alloc_tree_block+0x545/0x2140 fs/btrfs/extent-tree.c:4845 alloc_tree_block_no_bg_flush fs/btrfs/ctree.c:992 [inline] __btrfs_cow_block+0xb93/0x2760 fs/btrfs/ctree.c:1048 btrfs_cow_block+0xa3c/0xc90 fs/btrfs/ctree.c:1495 btrfs_search_slot+0x1ad5/0x3f20 fs/btrfs/ctree.c:2676 btrfs_insert_empty_items+0x5a7/0x790 fs/btrfs/ctree.c:4791 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x2cc/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c ===================================================== ===================================================== BUG: KMSAN: uninit-value in check_extent_item fs/btrfs/tree-checker.c:1272 [inline] BUG: KMSAN: uninit-value in check_leaf_item fs/btrfs/tree-checker.c:1569 [inline] BUG: KMSAN: uninit-value in check_leaf+0x35f3/0xc1d0 fs/btrfs/tree-checker.c:1709 CPU: 0 PID: 32330 Comm: syz-executor.5 Tainted: G B W 5.12.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x24c/0x2e0 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197 check_extent_item fs/btrfs/tree-checker.c:1272 [inline] check_leaf_item fs/btrfs/tree-checker.c:1569 [inline] check_leaf+0x35f3/0xc1d0 fs/btrfs/tree-checker.c:1709 btrfs_check_leaf_full+0x4a/0x60 fs/btrfs/tree-checker.c:1724 csum_dirty_buffer fs/btrfs/disk-io.c:486 [inline] btree_csum_one_bio+0xcca/0xfe0 fs/btrfs/disk-io.c:853 btrfs_submit_metadata_bio+0x949/0xcd0 fs/btrfs/disk-io.c:901 submit_one_bio fs/btrfs/extent_io.c:178 [inline] flush_write_bio fs/btrfs/extent_io.c:205 [inline] btree_write_cache_pages+0x20a4/0x2270 fs/btrfs/extent_io.c:4382 btree_writepages+0xce/0x2e0 fs/btrfs/disk-io.c:966 do_writepages+0x15f/0x420 mm/page-writeback.c:2352 __filemap_fdatawrite_range+0x59c/0x600 mm/filemap.c:424 filemap_fdatawrite_range+0x9d/0xb0 mm/filemap.c:444 btrfs_write_marked_extents+0x464/0x830 fs/btrfs/transaction.c:1050 btrfs_write_and_wait_transaction fs/btrfs/transaction.c:1162 [inline] btrfs_commit_transaction+0x4045/0x5640 fs/btrfs/transaction.c:2344 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7fc2549 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 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000ffd7479c EFLAGS: 00000296 ORIG_RAX: 0000000000000034 RAX: 0000000000000000 RBX: 00000000ffd74840 RCX: 0000000000000002 RDX: 000000000816c000 RSI: 0000000000000000 RDI: 00000000080e9e6a RBP: 00000000ffd74840 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226 kmsan_memmove_metadata+0xe/0x10 mm/kmsan/kmsan.c:251 __msan_memmove+0x46/0x60 mm/kmsan/kmsan_instr.c:92 copy_pages fs/btrfs/extent_io.c:6521 [inline] memcpy_extent_buffer+0x696/0xbc0 fs/btrfs/extent_io.c:6552 memmove_extent_buffer+0x260/0xd30 fs/btrfs/extent_io.c:6577 setup_items_for_insert+0x1258/0x1a00 fs/btrfs/ctree.c:4746 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x5df/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226 kmsan_memmove_metadata+0xe/0x10 mm/kmsan/kmsan.c:251 __msan_memmove+0x46/0x60 mm/kmsan/kmsan_instr.c:92 copy_pages fs/btrfs/extent_io.c:6521 [inline] memcpy_extent_buffer+0x696/0xbc0 fs/btrfs/extent_io.c:6552 memmove_extent_buffer+0x260/0xd30 fs/btrfs/extent_io.c:6577 setup_items_for_insert+0x1258/0x1a00 fs/btrfs/ctree.c:4746 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x5df/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226 kmsan_memmove_metadata+0xe/0x10 mm/kmsan/kmsan.c:251 __msan_memmove+0x46/0x60 mm/kmsan/kmsan_instr.c:92 copy_pages fs/btrfs/extent_io.c:6521 [inline] memcpy_extent_buffer+0x696/0xbc0 fs/btrfs/extent_io.c:6552 memmove_extent_buffer+0x260/0xd30 fs/btrfs/extent_io.c:6577 setup_items_for_insert+0x1258/0x1a00 fs/btrfs/ctree.c:4746 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x2cc/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was created at: kmsan_save_stack_with_flags+0x3c/0x90 mm/kmsan/kmsan.c:121 kmsan_alloc_page+0xd0/0x1e0 mm/kmsan/kmsan_shadow.c:274 __alloc_pages_nodemask+0x827/0xf90 mm/page_alloc.c:5044 alloc_pages_current+0x7b6/0xb60 mm/mempolicy.c:2277 alloc_pages include/linux/gfp.h:561 [inline] __page_cache_alloc mm/filemap.c:978 [inline] pagecache_get_page+0x111d/0x2040 mm/filemap.c:1797 find_or_create_page include/linux/pagemap.h:405 [inline] alloc_extent_buffer+0x8f8/0x33d0 fs/btrfs/extent_io.c:5618 btrfs_find_create_tree_block+0xb6/0xd0 fs/btrfs/disk-io.c:1024 btrfs_init_new_buffer fs/btrfs/extent-tree.c:4743 [inline] btrfs_alloc_tree_block+0x545/0x2140 fs/btrfs/extent-tree.c:4845 alloc_tree_block_no_bg_flush fs/btrfs/ctree.c:992 [inline] __btrfs_cow_block+0xb93/0x2760 fs/btrfs/ctree.c:1048 btrfs_cow_block+0xa3c/0xc90 fs/btrfs/ctree.c:1495 btrfs_search_slot+0x1ad5/0x3f20 fs/btrfs/ctree.c:2676 btrfs_insert_empty_items+0x5a7/0x790 fs/btrfs/ctree.c:4791 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x2cc/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c ===================================================== ===================================================== BUG: KMSAN: uninit-value in check_extent_item fs/btrfs/tree-checker.c:1273 [inline] BUG: KMSAN: uninit-value in check_leaf_item fs/btrfs/tree-checker.c:1569 [inline] BUG: KMSAN: uninit-value in check_leaf+0x3bfc/0xc1d0 fs/btrfs/tree-checker.c:1709 CPU: 0 PID: 32330 Comm: syz-executor.5 Tainted: G B W 5.12.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x24c/0x2e0 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197 check_extent_item fs/btrfs/tree-checker.c:1273 [inline] check_leaf_item fs/btrfs/tree-checker.c:1569 [inline] check_leaf+0x3bfc/0xc1d0 fs/btrfs/tree-checker.c:1709 btrfs_check_leaf_full+0x4a/0x60 fs/btrfs/tree-checker.c:1724 csum_dirty_buffer fs/btrfs/disk-io.c:486 [inline] btree_csum_one_bio+0xcca/0xfe0 fs/btrfs/disk-io.c:853 btrfs_submit_metadata_bio+0x949/0xcd0 fs/btrfs/disk-io.c:901 submit_one_bio fs/btrfs/extent_io.c:178 [inline] flush_write_bio fs/btrfs/extent_io.c:205 [inline] btree_write_cache_pages+0x20a4/0x2270 fs/btrfs/extent_io.c:4382 btree_writepages+0xce/0x2e0 fs/btrfs/disk-io.c:966 do_writepages+0x15f/0x420 mm/page-writeback.c:2352 __filemap_fdatawrite_range+0x59c/0x600 mm/filemap.c:424 filemap_fdatawrite_range+0x9d/0xb0 mm/filemap.c:444 btrfs_write_marked_extents+0x464/0x830 fs/btrfs/transaction.c:1050 btrfs_write_and_wait_transaction fs/btrfs/transaction.c:1162 [inline] btrfs_commit_transaction+0x4045/0x5640 fs/btrfs/transaction.c:2344 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7fc2549 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 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000ffd7479c EFLAGS: 00000296 ORIG_RAX: 0000000000000034 RAX: 0000000000000000 RBX: 00000000ffd74840 RCX: 0000000000000002 RDX: 000000000816c000 RSI: 0000000000000000 RDI: 00000000080e9e6a RBP: 00000000ffd74840 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226 kmsan_memcpy_metadata+0xb/0x10 mm/kmsan/kmsan.c:246 __msan_memcpy+0x46/0x60 mm/kmsan/kmsan_instr.c:110 read_extent_buffer+0x316/0x7b0 fs/btrfs/extent_io.c:6141 btrfs_item_key fs/btrfs/ctree.h:1948 [inline] btrfs_item_key_to_cpu fs/btrfs/ctree.h:2053 [inline] check_leaf+0x34c/0xc1d0 fs/btrfs/tree-checker.c:1649 btrfs_check_leaf_full+0x4a/0x60 fs/btrfs/tree-checker.c:1724 csum_dirty_buffer fs/btrfs/disk-io.c:486 [inline] btree_csum_one_bio+0xcca/0xfe0 fs/btrfs/disk-io.c:853 btrfs_submit_metadata_bio+0x949/0xcd0 fs/btrfs/disk-io.c:901 submit_one_bio fs/btrfs/extent_io.c:178 [inline] flush_write_bio fs/btrfs/extent_io.c:205 [inline] btree_write_cache_pages+0x20a4/0x2270 fs/btrfs/extent_io.c:4382 btree_writepages+0xce/0x2e0 fs/btrfs/disk-io.c:966 do_writepages+0x15f/0x420 mm/page-writeback.c:2352 __filemap_fdatawrite_range+0x59c/0x600 mm/filemap.c:424 filemap_fdatawrite_range+0x9d/0xb0 mm/filemap.c:444 btrfs_write_marked_extents+0x464/0x830 fs/btrfs/transaction.c:1050 btrfs_write_and_wait_transaction fs/btrfs/transaction.c:1162 [inline] btrfs_commit_transaction+0x4045/0x5640 fs/btrfs/transaction.c:2344 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226 kmsan_memmove_metadata+0xe/0x10 mm/kmsan/kmsan.c:251 __msan_memmove+0x46/0x60 mm/kmsan/kmsan_instr.c:92 copy_pages fs/btrfs/extent_io.c:6521 [inline] memmove_extent_buffer+0x7c3/0xd30 fs/btrfs/extent_io.c:6589 setup_items_for_insert+0x11d8/0x1a00 fs/btrfs/ctree.c:4741 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x5df/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226 kmsan_memmove_metadata+0xe/0x10 mm/kmsan/kmsan.c:251 __msan_memmove+0x46/0x60 mm/kmsan/kmsan_instr.c:92 copy_pages fs/btrfs/extent_io.c:6521 [inline] memmove_extent_buffer+0x7c3/0xd30 fs/btrfs/extent_io.c:6589 setup_items_for_insert+0x11d8/0x1a00 fs/btrfs/ctree.c:4741 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x5df/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226 kmsan_memmove_metadata+0xe/0x10 mm/kmsan/kmsan.c:251 __msan_memmove+0x46/0x60 mm/kmsan/kmsan_instr.c:92 copy_pages fs/btrfs/extent_io.c:6521 [inline] memmove_extent_buffer+0x7c3/0xd30 fs/btrfs/extent_io.c:6589 setup_items_for_insert+0x11d8/0x1a00 fs/btrfs/ctree.c:4741 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x2cc/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was created at: kmsan_save_stack_with_flags+0x3c/0x90 mm/kmsan/kmsan.c:121 kmsan_alloc_page+0xd0/0x1e0 mm/kmsan/kmsan_shadow.c:274 __alloc_pages_nodemask+0x827/0xf90 mm/page_alloc.c:5044 alloc_pages_current+0x7b6/0xb60 mm/mempolicy.c:2277 alloc_pages include/linux/gfp.h:561 [inline] __page_cache_alloc mm/filemap.c:978 [inline] pagecache_get_page+0x111d/0x2040 mm/filemap.c:1797 find_or_create_page include/linux/pagemap.h:405 [inline] alloc_extent_buffer+0x8f8/0x33d0 fs/btrfs/extent_io.c:5618 btrfs_find_create_tree_block+0xb6/0xd0 fs/btrfs/disk-io.c:1024 btrfs_init_new_buffer fs/btrfs/extent-tree.c:4743 [inline] btrfs_alloc_tree_block+0x545/0x2140 fs/btrfs/extent-tree.c:4845 alloc_tree_block_no_bg_flush fs/btrfs/ctree.c:992 [inline] __btrfs_cow_block+0xb93/0x2760 fs/btrfs/ctree.c:1048 btrfs_cow_block+0xa3c/0xc90 fs/btrfs/ctree.c:1495 btrfs_search_slot+0x1ad5/0x3f20 fs/btrfs/ctree.c:2676 btrfs_insert_empty_items+0x5a7/0x790 fs/btrfs/ctree.c:4791 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x2cc/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c ===================================================== ===================================================== BUG: KMSAN: uninit-value in check_extent_item fs/btrfs/tree-checker.c:1297 [inline] BUG: KMSAN: uninit-value in check_leaf_item fs/btrfs/tree-checker.c:1569 [inline] BUG: KMSAN: uninit-value in check_leaf+0x6603/0xc1d0 fs/btrfs/tree-checker.c:1709 CPU: 0 PID: 32330 Comm: syz-executor.5 Tainted: G B W 5.12.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x24c/0x2e0 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197 check_extent_item fs/btrfs/tree-checker.c:1297 [inline] check_leaf_item fs/btrfs/tree-checker.c:1569 [inline] check_leaf+0x6603/0xc1d0 fs/btrfs/tree-checker.c:1709 btrfs_check_leaf_full+0x4a/0x60 fs/btrfs/tree-checker.c:1724 csum_dirty_buffer fs/btrfs/disk-io.c:486 [inline] btree_csum_one_bio+0xcca/0xfe0 fs/btrfs/disk-io.c:853 btrfs_submit_metadata_bio+0x949/0xcd0 fs/btrfs/disk-io.c:901 submit_one_bio fs/btrfs/extent_io.c:178 [inline] flush_write_bio fs/btrfs/extent_io.c:205 [inline] btree_write_cache_pages+0x20a4/0x2270 fs/btrfs/extent_io.c:4382 btree_writepages+0xce/0x2e0 fs/btrfs/disk-io.c:966 do_writepages+0x15f/0x420 mm/page-writeback.c:2352 __filemap_fdatawrite_range+0x59c/0x600 mm/filemap.c:424 filemap_fdatawrite_range+0x9d/0xb0 mm/filemap.c:444 btrfs_write_marked_extents+0x464/0x830 fs/btrfs/transaction.c:1050 btrfs_write_and_wait_transaction fs/btrfs/transaction.c:1162 [inline] btrfs_commit_transaction+0x4045/0x5640 fs/btrfs/transaction.c:2344 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7fc2549 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 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000ffd7479c EFLAGS: 00000296 ORIG_RAX: 0000000000000034 RAX: 0000000000000000 RBX: 00000000ffd74840 RCX: 0000000000000002 RDX: 000000000816c000 RSI: 0000000000000000 RDI: 00000000080e9e6a RBP: 00000000ffd74840 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226 kmsan_memcpy_metadata+0xb/0x10 mm/kmsan/kmsan.c:246 __msan_memcpy+0x46/0x60 mm/kmsan/kmsan_instr.c:110 read_extent_buffer+0x316/0x7b0 fs/btrfs/extent_io.c:6141 btrfs_item_key fs/btrfs/ctree.h:1948 [inline] btrfs_item_key_to_cpu fs/btrfs/ctree.h:2053 [inline] check_leaf+0x34c/0xc1d0 fs/btrfs/tree-checker.c:1649 btrfs_check_leaf_full+0x4a/0x60 fs/btrfs/tree-checker.c:1724 csum_dirty_buffer fs/btrfs/disk-io.c:486 [inline] btree_csum_one_bio+0xcca/0xfe0 fs/btrfs/disk-io.c:853 btrfs_submit_metadata_bio+0x949/0xcd0 fs/btrfs/disk-io.c:901 submit_one_bio fs/btrfs/extent_io.c:178 [inline] flush_write_bio fs/btrfs/extent_io.c:205 [inline] btree_write_cache_pages+0x20a4/0x2270 fs/btrfs/extent_io.c:4382 btree_writepages+0xce/0x2e0 fs/btrfs/disk-io.c:966 do_writepages+0x15f/0x420 mm/page-writeback.c:2352 __filemap_fdatawrite_range+0x59c/0x600 mm/filemap.c:424 filemap_fdatawrite_range+0x9d/0xb0 mm/filemap.c:444 btrfs_write_marked_extents+0x464/0x830 fs/btrfs/transaction.c:1050 btrfs_write_and_wait_transaction fs/btrfs/transaction.c:1162 [inline] btrfs_commit_transaction+0x4045/0x5640 fs/btrfs/transaction.c:2344 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226 kmsan_memmove_metadata+0xe/0x10 mm/kmsan/kmsan.c:251 __msan_memmove+0x46/0x60 mm/kmsan/kmsan_instr.c:92 copy_pages fs/btrfs/extent_io.c:6521 [inline] memmove_extent_buffer+0x7c3/0xd30 fs/btrfs/extent_io.c:6589 setup_items_for_insert+0x11d8/0x1a00 fs/btrfs/ctree.c:4741 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x5df/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226 kmsan_memmove_metadata+0xe/0x10 mm/kmsan/kmsan.c:251 __msan_memmove+0x46/0x60 mm/kmsan/kmsan_instr.c:92 copy_pages fs/btrfs/extent_io.c:6521 [inline] memmove_extent_buffer+0x7c3/0xd30 fs/btrfs/extent_io.c:6589 setup_items_for_insert+0x11d8/0x1a00 fs/btrfs/ctree.c:4741 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x5df/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226 kmsan_memmove_metadata+0xe/0x10 mm/kmsan/kmsan.c:251 __msan_memmove+0x46/0x60 mm/kmsan/kmsan_instr.c:92 copy_pages fs/btrfs/extent_io.c:6521 [inline] memmove_extent_buffer+0x7c3/0xd30 fs/btrfs/extent_io.c:6589 setup_items_for_insert+0x11d8/0x1a00 fs/btrfs/ctree.c:4741 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x2cc/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was created at: kmsan_save_stack_with_flags+0x3c/0x90 mm/kmsan/kmsan.c:121 kmsan_alloc_page+0xd0/0x1e0 mm/kmsan/kmsan_shadow.c:274 __alloc_pages_nodemask+0x827/0xf90 mm/page_alloc.c:5044 alloc_pages_current+0x7b6/0xb60 mm/mempolicy.c:2277 alloc_pages include/linux/gfp.h:561 [inline] __page_cache_alloc mm/filemap.c:978 [inline] pagecache_get_page+0x111d/0x2040 mm/filemap.c:1797 find_or_create_page include/linux/pagemap.h:405 [inline] alloc_extent_buffer+0x8f8/0x33d0 fs/btrfs/extent_io.c:5618 btrfs_find_create_tree_block+0xb6/0xd0 fs/btrfs/disk-io.c:1024 btrfs_init_new_buffer fs/btrfs/extent-tree.c:4743 [inline] btrfs_alloc_tree_block+0x545/0x2140 fs/btrfs/extent-tree.c:4845 alloc_tree_block_no_bg_flush fs/btrfs/ctree.c:992 [inline] __btrfs_cow_block+0xb93/0x2760 fs/btrfs/ctree.c:1048 btrfs_cow_block+0xa3c/0xc90 fs/btrfs/ctree.c:1495 btrfs_search_slot+0x1ad5/0x3f20 fs/btrfs/ctree.c:2676 btrfs_insert_empty_items+0x5a7/0x790 fs/btrfs/ctree.c:4791 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x2cc/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c ===================================================== ===================================================== BUG: KMSAN: uninit-value in check_extent_item fs/btrfs/tree-checker.c:1312 [inline] BUG: KMSAN: uninit-value in check_leaf_item fs/btrfs/tree-checker.c:1569 [inline] BUG: KMSAN: uninit-value in check_leaf+0x454f/0xc1d0 fs/btrfs/tree-checker.c:1709 CPU: 0 PID: 32330 Comm: syz-executor.5 Tainted: G B W 5.12.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x24c/0x2e0 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197 check_extent_item fs/btrfs/tree-checker.c:1312 [inline] check_leaf_item fs/btrfs/tree-checker.c:1569 [inline] check_leaf+0x454f/0xc1d0 fs/btrfs/tree-checker.c:1709 btrfs_check_leaf_full+0x4a/0x60 fs/btrfs/tree-checker.c:1724 csum_dirty_buffer fs/btrfs/disk-io.c:486 [inline] btree_csum_one_bio+0xcca/0xfe0 fs/btrfs/disk-io.c:853 btrfs_submit_metadata_bio+0x949/0xcd0 fs/btrfs/disk-io.c:901 submit_one_bio fs/btrfs/extent_io.c:178 [inline] flush_write_bio fs/btrfs/extent_io.c:205 [inline] btree_write_cache_pages+0x20a4/0x2270 fs/btrfs/extent_io.c:4382 btree_writepages+0xce/0x2e0 fs/btrfs/disk-io.c:966 do_writepages+0x15f/0x420 mm/page-writeback.c:2352 __filemap_fdatawrite_range+0x59c/0x600 mm/filemap.c:424 filemap_fdatawrite_range+0x9d/0xb0 mm/filemap.c:444 btrfs_write_marked_extents+0x464/0x830 fs/btrfs/transaction.c:1050 btrfs_write_and_wait_transaction fs/btrfs/transaction.c:1162 [inline] btrfs_commit_transaction+0x4045/0x5640 fs/btrfs/transaction.c:2344 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7fc2549 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 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000ffd7479c EFLAGS: 00000296 ORIG_RAX: 0000000000000034 RAX: 0000000000000000 RBX: 00000000ffd74840 RCX: 0000000000000002 RDX: 000000000816c000 RSI: 0000000000000000 RDI: 00000000080e9e6a RBP: 00000000ffd74840 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226 kmsan_memmove_metadata+0xe/0x10 mm/kmsan/kmsan.c:251 __msan_memmove+0x46/0x60 mm/kmsan/kmsan_instr.c:92 copy_pages fs/btrfs/extent_io.c:6521 [inline] memmove_extent_buffer+0x7c3/0xd30 fs/btrfs/extent_io.c:6589 setup_items_for_insert+0x11d8/0x1a00 fs/btrfs/ctree.c:4741 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x5df/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 __msan_chain_origin+0x54/0xa0 mm/kmsan/kmsan_instr.c:147 put_unaligned_le32 include/linux/unaligned/access_ok.h:45 [inline] btrfs_set_token_32+0x9a6/0xb40 fs/btrfs/struct-funcs.c:162 btrfs_set_token_item_offset fs/btrfs/ctree.h:1907 [inline] setup_items_for_insert+0x10e9/0x1a00 fs/btrfs/ctree.c:4737 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x5df/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226 kmsan_memmove_metadata+0xe/0x10 mm/kmsan/kmsan.c:251 __msan_memmove+0x46/0x60 mm/kmsan/kmsan_instr.c:92 copy_pages fs/btrfs/extent_io.c:6521 [inline] memmove_extent_buffer+0x7c3/0xd30 fs/btrfs/extent_io.c:6589 setup_items_for_insert+0x11d8/0x1a00 fs/btrfs/ctree.c:4741 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x5df/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 __msan_chain_origin+0x54/0xa0 mm/kmsan/kmsan_instr.c:147 put_unaligned_le32 include/linux/unaligned/access_ok.h:45 [inline] btrfs_set_token_32+0x9a6/0xb40 fs/btrfs/struct-funcs.c:162 btrfs_set_token_item_offset fs/btrfs/ctree.h:1907 [inline] setup_items_for_insert+0x10e9/0x1a00 fs/btrfs/ctree.c:4737 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x5df/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226 kmsan_memmove_metadata+0xe/0x10 mm/kmsan/kmsan.c:251 __msan_memmove+0x46/0x60 mm/kmsan/kmsan_instr.c:92 copy_pages fs/btrfs/extent_io.c:6521 [inline] memmove_extent_buffer+0x7c3/0xd30 fs/btrfs/extent_io.c:6589 setup_items_for_insert+0x11d8/0x1a00 fs/btrfs/ctree.c:4741 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x2cc/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 __msan_chain_origin+0x54/0xa0 mm/kmsan/kmsan_instr.c:147 put_unaligned_le32 include/linux/unaligned/access_ok.h:45 [inline] btrfs_set_token_32+0x9a6/0xb40 fs/btrfs/struct-funcs.c:162 btrfs_set_token_item_offset fs/btrfs/ctree.h:1907 [inline] setup_items_for_insert+0x10e9/0x1a00 fs/btrfs/ctree.c:4737 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x2cc/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was created at: kmsan_save_stack_with_flags+0x3c/0x90 mm/kmsan/kmsan.c:121 kmsan_alloc_page+0xd0/0x1e0 mm/kmsan/kmsan_shadow.c:274 __alloc_pages_nodemask+0x827/0xf90 mm/page_alloc.c:5044 alloc_pages_current+0x7b6/0xb60 mm/mempolicy.c:2277 alloc_pages include/linux/gfp.h:561 [inline] __page_cache_alloc mm/filemap.c:978 [inline] pagecache_get_page+0x111d/0x2040 mm/filemap.c:1797 find_or_create_page include/linux/pagemap.h:405 [inline] alloc_extent_buffer+0x8f8/0x33d0 fs/btrfs/extent_io.c:5618 btrfs_find_create_tree_block+0xb6/0xd0 fs/btrfs/disk-io.c:1024 btrfs_init_new_buffer fs/btrfs/extent-tree.c:4743 [inline] btrfs_alloc_tree_block+0x545/0x2140 fs/btrfs/extent-tree.c:4845 alloc_tree_block_no_bg_flush fs/btrfs/ctree.c:992 [inline] __btrfs_cow_block+0xb93/0x2760 fs/btrfs/ctree.c:1048 btrfs_cow_block+0xa3c/0xc90 fs/btrfs/ctree.c:1495 btrfs_search_slot+0x1ad5/0x3f20 fs/btrfs/ctree.c:2676 btrfs_insert_empty_items+0x5a7/0x790 fs/btrfs/ctree.c:4791 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x2cc/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c ===================================================== ===================================================== BUG: KMSAN: uninit-value in check_extent_item fs/btrfs/tree-checker.c:1320 [inline] BUG: KMSAN: uninit-value in check_leaf_item fs/btrfs/tree-checker.c:1569 [inline] BUG: KMSAN: uninit-value in check_leaf+0x4452/0xc1d0 fs/btrfs/tree-checker.c:1709 CPU: 0 PID: 32330 Comm: syz-executor.5 Tainted: G B W 5.12.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x24c/0x2e0 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197 check_extent_item fs/btrfs/tree-checker.c:1320 [inline] check_leaf_item fs/btrfs/tree-checker.c:1569 [inline] check_leaf+0x4452/0xc1d0 fs/btrfs/tree-checker.c:1709 btrfs_check_leaf_full+0x4a/0x60 fs/btrfs/tree-checker.c:1724 csum_dirty_buffer fs/btrfs/disk-io.c:486 [inline] btree_csum_one_bio+0xcca/0xfe0 fs/btrfs/disk-io.c:853 btrfs_submit_metadata_bio+0x949/0xcd0 fs/btrfs/disk-io.c:901 submit_one_bio fs/btrfs/extent_io.c:178 [inline] flush_write_bio fs/btrfs/extent_io.c:205 [inline] btree_write_cache_pages+0x20a4/0x2270 fs/btrfs/extent_io.c:4382 btree_writepages+0xce/0x2e0 fs/btrfs/disk-io.c:966 do_writepages+0x15f/0x420 mm/page-writeback.c:2352 __filemap_fdatawrite_range+0x59c/0x600 mm/filemap.c:424 filemap_fdatawrite_range+0x9d/0xb0 mm/filemap.c:444 btrfs_write_marked_extents+0x464/0x830 fs/btrfs/transaction.c:1050 btrfs_write_and_wait_transaction fs/btrfs/transaction.c:1162 [inline] btrfs_commit_transaction+0x4045/0x5640 fs/btrfs/transaction.c:2344 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7fc2549 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 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000ffd7479c EFLAGS: 00000296 ORIG_RAX: 0000000000000034 RAX: 0000000000000000 RBX: 00000000ffd74840 RCX: 0000000000000002 RDX: 000000000816c000 RSI: 0000000000000000 RDI: 00000000080e9e6a RBP: 00000000ffd74840 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226 kmsan_memmove_metadata+0xe/0x10 mm/kmsan/kmsan.c:251 __msan_memmove+0x46/0x60 mm/kmsan/kmsan_instr.c:92 copy_pages fs/btrfs/extent_io.c:6521 [inline] memmove_extent_buffer+0x7c3/0xd30 fs/btrfs/extent_io.c:6589 setup_items_for_insert+0x11d8/0x1a00 fs/btrfs/ctree.c:4741 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x5df/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 __msan_chain_origin+0x54/0xa0 mm/kmsan/kmsan_instr.c:147 put_unaligned_le32 include/linux/unaligned/access_ok.h:45 [inline] btrfs_set_token_32+0x9a6/0xb40 fs/btrfs/struct-funcs.c:162 btrfs_set_token_item_offset fs/btrfs/ctree.h:1907 [inline] setup_items_for_insert+0x10e9/0x1a00 fs/btrfs/ctree.c:4737 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x5df/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226 kmsan_memmove_metadata+0xe/0x10 mm/kmsan/kmsan.c:251 __msan_memmove+0x46/0x60 mm/kmsan/kmsan_instr.c:92 copy_pages fs/btrfs/extent_io.c:6521 [inline] memmove_extent_buffer+0x7c3/0xd30 fs/btrfs/extent_io.c:6589 setup_items_for_insert+0x11d8/0x1a00 fs/btrfs/ctree.c:4741 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x5df/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 __msan_chain_origin+0x54/0xa0 mm/kmsan/kmsan_instr.c:147 put_unaligned_le32 include/linux/unaligned/access_ok.h:45 [inline] btrfs_set_token_32+0x9a6/0xb40 fs/btrfs/struct-funcs.c:162 btrfs_set_token_item_offset fs/btrfs/ctree.h:1907 [inline] setup_items_for_insert+0x10e9/0x1a00 fs/btrfs/ctree.c:4737 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x5df/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226 kmsan_memmove_metadata+0xe/0x10 mm/kmsan/kmsan.c:251 __msan_memmove+0x46/0x60 mm/kmsan/kmsan_instr.c:92 copy_pages fs/btrfs/extent_io.c:6521 [inline] memmove_extent_buffer+0x7c3/0xd30 fs/btrfs/extent_io.c:6589 setup_items_for_insert+0x11d8/0x1a00 fs/btrfs/ctree.c:4741 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x2cc/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 __msan_chain_origin+0x54/0xa0 mm/kmsan/kmsan_instr.c:147 put_unaligned_le32 include/linux/unaligned/access_ok.h:45 [inline] btrfs_set_token_32+0x9a6/0xb40 fs/btrfs/struct-funcs.c:162 btrfs_set_token_item_offset fs/btrfs/ctree.h:1907 [inline] setup_items_for_insert+0x10e9/0x1a00 fs/btrfs/ctree.c:4737 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x2cc/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was created at: kmsan_save_stack_with_flags+0x3c/0x90 mm/kmsan/kmsan.c:121 kmsan_alloc_page+0xd0/0x1e0 mm/kmsan/kmsan_shadow.c:274 __alloc_pages_nodemask+0x827/0xf90 mm/page_alloc.c:5044 alloc_pages_current+0x7b6/0xb60 mm/mempolicy.c:2277 alloc_pages include/linux/gfp.h:561 [inline] __page_cache_alloc mm/filemap.c:978 [inline] pagecache_get_page+0x111d/0x2040 mm/filemap.c:1797 find_or_create_page include/linux/pagemap.h:405 [inline] alloc_extent_buffer+0x8f8/0x33d0 fs/btrfs/extent_io.c:5618 btrfs_find_create_tree_block+0xb6/0xd0 fs/btrfs/disk-io.c:1024 btrfs_init_new_buffer fs/btrfs/extent-tree.c:4743 [inline] btrfs_alloc_tree_block+0x545/0x2140 fs/btrfs/extent-tree.c:4845 alloc_tree_block_no_bg_flush fs/btrfs/ctree.c:992 [inline] __btrfs_cow_block+0xb93/0x2760 fs/btrfs/ctree.c:1048 btrfs_cow_block+0xa3c/0xc90 fs/btrfs/ctree.c:1495 btrfs_search_slot+0x1ad5/0x3f20 fs/btrfs/ctree.c:2676 btrfs_insert_empty_items+0x5a7/0x790 fs/btrfs/ctree.c:4791 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x2cc/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c ===================================================== ===================================================== BUG: KMSAN: uninit-value in btrfs_get_8+0x2c8/0x470 fs/btrfs/struct-funcs.c:160 CPU: 0 PID: 32330 Comm: syz-executor.5 Tainted: G B W 5.12.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x24c/0x2e0 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197 btrfs_get_8+0x2c8/0x470 fs/btrfs/struct-funcs.c:160 btrfs_extent_inline_ref_type fs/btrfs/ctree.h:1827 [inline] check_extent_item fs/btrfs/tree-checker.c:1327 [inline] check_leaf_item fs/btrfs/tree-checker.c:1569 [inline] check_leaf+0x3e69/0xc1d0 fs/btrfs/tree-checker.c:1709 btrfs_check_leaf_full+0x4a/0x60 fs/btrfs/tree-checker.c:1724 csum_dirty_buffer fs/btrfs/disk-io.c:486 [inline] btree_csum_one_bio+0xcca/0xfe0 fs/btrfs/disk-io.c:853 btrfs_submit_metadata_bio+0x949/0xcd0 fs/btrfs/disk-io.c:901 submit_one_bio fs/btrfs/extent_io.c:178 [inline] flush_write_bio fs/btrfs/extent_io.c:205 [inline] btree_write_cache_pages+0x20a4/0x2270 fs/btrfs/extent_io.c:4382 btree_writepages+0xce/0x2e0 fs/btrfs/disk-io.c:966 do_writepages+0x15f/0x420 mm/page-writeback.c:2352 __filemap_fdatawrite_range+0x59c/0x600 mm/filemap.c:424 filemap_fdatawrite_range+0x9d/0xb0 mm/filemap.c:444 btrfs_write_marked_extents+0x464/0x830 fs/btrfs/transaction.c:1050 btrfs_write_and_wait_transaction fs/btrfs/transaction.c:1162 [inline] btrfs_commit_transaction+0x4045/0x5640 fs/btrfs/transaction.c:2344 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7fc2549 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 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000ffd7479c EFLAGS: 00000296 ORIG_RAX: 0000000000000034 RAX: 0000000000000000 RBX: 00000000ffd74840 RCX: 0000000000000002 RDX: 000000000816c000 RSI: 0000000000000000 RDI: 00000000080e9e6a RBP: 00000000ffd74840 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226 kmsan_memmove_metadata+0xe/0x10 mm/kmsan/kmsan.c:251 __msan_memmove+0x46/0x60 mm/kmsan/kmsan_instr.c:92 copy_pages fs/btrfs/extent_io.c:6521 [inline] memmove_extent_buffer+0x7c3/0xd30 fs/btrfs/extent_io.c:6589 setup_items_for_insert+0x11d8/0x1a00 fs/btrfs/ctree.c:4741 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x5df/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 __msan_chain_origin+0x54/0xa0 mm/kmsan/kmsan_instr.c:147 put_unaligned_le32 include/linux/unaligned/access_ok.h:45 [inline] btrfs_set_token_32+0x9a6/0xb40 fs/btrfs/struct-funcs.c:162 btrfs_set_token_item_offset fs/btrfs/ctree.h:1907 [inline] setup_items_for_insert+0x10e9/0x1a00 fs/btrfs/ctree.c:4737 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x5df/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226 kmsan_memmove_metadata+0xe/0x10 mm/kmsan/kmsan.c:251 __msan_memmove+0x46/0x60 mm/kmsan/kmsan_instr.c:92 copy_pages fs/btrfs/extent_io.c:6521 [inline] memmove_extent_buffer+0x7c3/0xd30 fs/btrfs/extent_io.c:6589 setup_items_for_insert+0x11d8/0x1a00 fs/btrfs/ctree.c:4741 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x5df/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 __msan_chain_origin+0x54/0xa0 mm/kmsan/kmsan_instr.c:147 put_unaligned_le32 include/linux/unaligned/access_ok.h:45 [inline] btrfs_set_token_32+0x9a6/0xb40 fs/btrfs/struct-funcs.c:162 btrfs_set_token_item_offset fs/btrfs/ctree.h:1907 [inline] setup_items_for_insert+0x10e9/0x1a00 fs/btrfs/ctree.c:4737 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x5df/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226 kmsan_memmove_metadata+0xe/0x10 mm/kmsan/kmsan.c:251 __msan_memmove+0x46/0x60 mm/kmsan/kmsan_instr.c:92 copy_pages fs/btrfs/extent_io.c:6521 [inline] memmove_extent_buffer+0x7c3/0xd30 fs/btrfs/extent_io.c:6589 setup_items_for_insert+0x11d8/0x1a00 fs/btrfs/ctree.c:4741 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x2cc/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 __msan_chain_origin+0x54/0xa0 mm/kmsan/kmsan_instr.c:147 put_unaligned_le32 include/linux/unaligned/access_ok.h:45 [inline] btrfs_set_token_32+0x9a6/0xb40 fs/btrfs/struct-funcs.c:162 btrfs_set_token_item_offset fs/btrfs/ctree.h:1907 [inline] setup_items_for_insert+0x10e9/0x1a00 fs/btrfs/ctree.c:4737 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x2cc/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was created at: kmsan_save_stack_with_flags+0x3c/0x90 mm/kmsan/kmsan.c:121 kmsan_alloc_page+0xd0/0x1e0 mm/kmsan/kmsan_shadow.c:274 __alloc_pages_nodemask+0x827/0xf90 mm/page_alloc.c:5044 alloc_pages_current+0x7b6/0xb60 mm/mempolicy.c:2277 alloc_pages include/linux/gfp.h:561 [inline] __page_cache_alloc mm/filemap.c:978 [inline] pagecache_get_page+0x111d/0x2040 mm/filemap.c:1797 find_or_create_page include/linux/pagemap.h:405 [inline] alloc_extent_buffer+0x8f8/0x33d0 fs/btrfs/extent_io.c:5618 btrfs_find_create_tree_block+0xb6/0xd0 fs/btrfs/disk-io.c:1024 btrfs_init_new_buffer fs/btrfs/extent-tree.c:4743 [inline] btrfs_alloc_tree_block+0x545/0x2140 fs/btrfs/extent-tree.c:4845 alloc_tree_block_no_bg_flush fs/btrfs/ctree.c:992 [inline] __btrfs_cow_block+0xb93/0x2760 fs/btrfs/ctree.c:1048 btrfs_cow_block+0xa3c/0xc90 fs/btrfs/ctree.c:1495 btrfs_search_slot+0x1ad5/0x3f20 fs/btrfs/ctree.c:2676 btrfs_insert_empty_items+0x5a7/0x790 fs/btrfs/ctree.c:4791 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x2cc/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c ===================================================== ===================================================== BUG: KMSAN: uninit-value in check_setget_bounds fs/btrfs/struct-funcs.c:15 [inline] BUG: KMSAN: uninit-value in btrfs_get_8+0x2e7/0x470 fs/btrfs/struct-funcs.c:160 CPU: 0 PID: 32330 Comm: syz-executor.5 Tainted: G B W 5.12.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x24c/0x2e0 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197 check_setget_bounds fs/btrfs/struct-funcs.c:15 [inline] btrfs_get_8+0x2e7/0x470 fs/btrfs/struct-funcs.c:160 btrfs_extent_inline_ref_type fs/btrfs/ctree.h:1827 [inline] check_extent_item fs/btrfs/tree-checker.c:1327 [inline] check_leaf_item fs/btrfs/tree-checker.c:1569 [inline] check_leaf+0x3e69/0xc1d0 fs/btrfs/tree-checker.c:1709 btrfs_check_leaf_full+0x4a/0x60 fs/btrfs/tree-checker.c:1724 csum_dirty_buffer fs/btrfs/disk-io.c:486 [inline] btree_csum_one_bio+0xcca/0xfe0 fs/btrfs/disk-io.c:853 btrfs_submit_metadata_bio+0x949/0xcd0 fs/btrfs/disk-io.c:901 submit_one_bio fs/btrfs/extent_io.c:178 [inline] flush_write_bio fs/btrfs/extent_io.c:205 [inline] btree_write_cache_pages+0x20a4/0x2270 fs/btrfs/extent_io.c:4382 btree_writepages+0xce/0x2e0 fs/btrfs/disk-io.c:966 do_writepages+0x15f/0x420 mm/page-writeback.c:2352 __filemap_fdatawrite_range+0x59c/0x600 mm/filemap.c:424 filemap_fdatawrite_range+0x9d/0xb0 mm/filemap.c:444 btrfs_write_marked_extents+0x464/0x830 fs/btrfs/transaction.c:1050 btrfs_write_and_wait_transaction fs/btrfs/transaction.c:1162 [inline] btrfs_commit_transaction+0x4045/0x5640 fs/btrfs/transaction.c:2344 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7fc2549 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 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000ffd7479c EFLAGS: 00000296 ORIG_RAX: 0000000000000034 RAX: 0000000000000000 RBX: 00000000ffd74840 RCX: 0000000000000002 RDX: 000000000816c000 RSI: 0000000000000000 RDI: 00000000080e9e6a RBP: 00000000ffd74840 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 kmsan_memcpy_memmove_metadata+0x25e/0x2d0 mm/kmsan/kmsan.c:226 kmsan_memmove_metadata+0xe/0x10 mm/kmsan/kmsan.c:251 __msan_memmove+0x46/0x60 mm/kmsan/kmsan_instr.c:92 copy_pages fs/btrfs/extent_io.c:6521 [inline] memmove_extent_buffer+0x7c3/0xd30 fs/btrfs/extent_io.c:6589 setup_items_for_insert+0x11d8/0x1a00 fs/btrfs/ctree.c:4741 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026 btrfs_run_delayed_refs+0x5df/0x910 fs/btrfs/extent-tree.c:2157 commit_cowonly_roots+0xea1/0x1560 fs/btrfs/transaction.c:1272 btrfs_commit_transaction+0x212b/0x5640 fs/btrfs/transaction.c:2293 btrfs_commit_super+0x1b7/0x1f0 fs/btrfs/disk-io.c:4210 close_ctree+0x4b1/0xf57 fs/btrfs/disk-io.c:4275 btrfs_put_super+0x53/0x70 fs/btrfs/super.c:325 generic_shutdown_super+0x2ab/0x650 fs/super.c:464 kill_anon_super+0x63/0xb0 fs/super.c:1056 btrfs_kill_super+0x61/0x90 fs/btrfs/super.c:2353 deactivate_locked_super+0x10d/0x1e0 fs/super.c:335 deactivate_super+0x1b7/0x1d0 fs/super.c:366 cleanup_mnt+0x7a0/0x870 fs/namespace.c:1136 __cleanup_mnt+0x3b/0x50 fs/namespace.c:1143 task_work_run+0x140/0x280 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x486/0x560 kernel/entry/common.c:208 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline] syscall_exit_to_user_mode+0x35/0x60 kernel/entry/common.c:301 __do_fast_syscall_32+0x14f/0x180 arch/x86/entry/common.c:145 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:167 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:210 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:121 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:289 __msan_chain_origin+0x54/0xa0 mm/kmsan/kmsan_instr.c:147 put_unaligned_le32 include/linux/unaligned/access_ok.h:45 [inline] btrfs_set_token_32+0x9a6/0xb40 fs/btrfs/struct-funcs.c:162 btrfs_set_token_item_offset fs/btrfs/ctree.h:1907 [inline] setup_items_for_insert+0x10e9/0x1a00 fs/btrfs/ctree.c:4737 btrfs_insert_empty_items+0x6f9/0x790 fs/btrfs/ctree.c:4800 btrfs_insert_empty_item fs/btrfs/ctree.h:2867 [inline] alloc_reserved_tree_block+0x403/0xef0 fs/btrfs/extent-tree.c:4618 run_delayed_tree_ref+0x3ea/0xa30 fs/btrfs/extent-tree.c:1678 run_one_delayed_ref fs/btrfs/extent-tree.c:1707 [inline] btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:1961 [inline] __btrfs_run_delayed_refs+0xf48/0x2c20 fs/btrfs/extent-tree.c:2026
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021/04/22 03:40 | https://github.com/google/kmsan.git master | 4ebaab5fb428 | 2bc8999a | .config | console log | report | info | ci-upstream-kmsan-gce-386 | KMSAN: uninit-value in check_leaf |