Extracting prog: 1m53.075657015s Minimizing prog: 62.007µs Simplifying prog options: 0s Extracting C: 33.523540312s Simplifying C: 5m5.015744617s extracting reproducer from 1 programs testing a last program of every proc single: executing 1 programs separately with timeout 30s testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ocfs2 detailed listing: executing program 0: syz_mount_image$ocfs2(&(0x7f0000004440), &(0x7f0000000780)='./file1\x00', 0x1000000, 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program crashed: KASAN: use-after-free Read in __ocfs2_find_path single: successfully extracted reproducer found reproducer with 1 syscalls minimizing guilty program extracting C reproducer testing compiled C program (duration=1m2.205169302s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ocfs2 program crashed: KASAN: use-after-free Read in __ocfs2_find_path simplifying C reproducer testing compiled C program (duration=1m2.205169302s, {Threaded:false Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ocfs2 program crashed: KASAN: use-after-free Read in __ocfs2_find_path testing compiled C program (duration=1m2.205169302s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ocfs2 program crashed: KASAN: use-after-free Read in __ocfs2_find_path testing compiled C program (duration=1m2.205169302s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ocfs2 program crashed: KASAN: use-after-free Read in __ocfs2_find_path testing compiled C program (duration=1m2.205169302s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ocfs2 program crashed: KASAN: use-after-free Read in __ocfs2_find_path testing compiled C program (duration=1m2.205169302s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ocfs2 program crashed: KASAN: use-after-free Read in __ocfs2_find_path testing compiled C program (duration=1m2.205169302s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ocfs2 program crashed: KASAN: use-after-free Read in __ocfs2_find_path testing compiled C program (duration=1m2.205169302s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_mount_image$ocfs2 program crashed: KASAN: use-after-free Read in __ocfs2_find_path reproducing took 7m31.615033559s repro crashed as (corrupted=false): loop0: detected capacity change from 0 to 32768 ================================================================== BUG: KASAN: use-after-free in __ocfs2_find_path+0x203/0x7e0 fs/ocfs2/alloc.c:1824 Read of size 4 at addr ffff888048fee000 by task syz-executor261/5304 CPU: 0 UID: 0 PID: 5304 Comm: syz-executor261 Not tainted 6.13.0-rc1-syzkaller-00036-g5076001689e4 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0x169/0x550 mm/kasan/report.c:489 kasan_report+0x143/0x180 mm/kasan/report.c:602 __ocfs2_find_path+0x203/0x7e0 fs/ocfs2/alloc.c:1824 ocfs2_find_leaf+0xcf/0x230 fs/ocfs2/alloc.c:1938 ocfs2_get_clusters_nocache+0x1ad/0xbf0 fs/ocfs2/extent_map.c:418 ocfs2_get_clusters+0x5bd/0xbd0 fs/ocfs2/extent_map.c:621 ocfs2_extent_map_get_blocks+0x24c/0x7d0 fs/ocfs2/extent_map.c:668 ocfs2_read_virt_blocks+0x313/0xb10 fs/ocfs2/extent_map.c:983 ocfs2_read_dir_block fs/ocfs2/dir.c:508 [inline] ocfs2_find_entry_el fs/ocfs2/dir.c:715 [inline] ocfs2_find_entry+0x43b/0x2730 fs/ocfs2/dir.c:1080 ocfs2_find_files_on_disk+0xff/0x360 fs/ocfs2/dir.c:1981 ocfs2_lookup_ino_from_name+0xb1/0x1e0 fs/ocfs2/dir.c:2003 _ocfs2_get_system_file_inode fs/ocfs2/sysfile.c:136 [inline] ocfs2_get_system_file_inode+0x305/0x7b0 fs/ocfs2/sysfile.c:112 ocfs2_init_global_system_inodes+0x32c/0x730 fs/ocfs2/super.c:457 ocfs2_initialize_super fs/ocfs2/super.c:2248 [inline] ocfs2_fill_super+0x2f5b/0x5760 fs/ocfs2/super.c:994 mount_bdev+0x20a/0x2d0 fs/super.c:1693 legacy_get_tree+0xee/0x190 fs/fs_context.c:662 vfs_get_tree+0x90/0x2b0 fs/super.c:1814 do_new_mount+0x2be/0xb40 fs/namespace.c:3507 do_mount fs/namespace.c:3847 [inline] __do_sys_mount fs/namespace.c:4057 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4034 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f9638ddddea Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc3f3775e8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ffc3f377600 RCX: 00007f9638ddddea RDX: 0000000020004440 RSI: 0000000020000780 RDI: 00007ffc3f377600 RBP: 0000000000000004 R08: 00007ffc3f377640 R09: 0000000000004444 R10: 0000000001000000 R11: 0000000000000282 R12: 0000000001000000 R13: 00007ffc3f377640 R14: 0000000000000003 R15: 0000000001000000 The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x24 pfn:0x48fee flags: 0x4fff00000000000(node=1|zone=1|lastcpupid=0x7ff) raw: 04fff00000000000 ffffea000123fbc8 ffffea00012205c8 0000000000000000 raw: 0000000000000024 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as freed page last allocated via order 0, migratetype Movable, gfp_mask 0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), pid 5303, tgid 5303 (syz-executor261), ts 68841436682, free_ts 68984777943 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1556 prep_new_page mm/page_alloc.c:1564 [inline] get_page_from_freelist+0x365c/0x37a0 mm/page_alloc.c:3474 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4751 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265 folio_alloc_mpol_noprof+0x36/0x50 mm/mempolicy.c:2283 shmem_alloc_folio mm/shmem.c:1794 [inline] shmem_alloc_and_add_folio+0x49b/0x13d0 mm/shmem.c:1833 shmem_get_folio_gfp+0x5a9/0x20a0 mm/shmem.c:2355 shmem_get_folio mm/shmem.c:2461 [inline] shmem_write_begin+0x17e/0x460 mm/shmem.c:3117 generic_perform_write+0x344/0x6d0 mm/filemap.c:4055 shmem_file_write_iter+0xf9/0x120 mm/shmem.c:3293 new_sync_write fs/read_write.c:586 [inline] vfs_write+0xaeb/0xd30 fs/read_write.c:679 ksys_write+0x18f/0x2b0 fs/read_write.c:731 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 5303 tgid 5303 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1127 [inline] free_unref_folios+0xf62/0x1a90 mm/page_alloc.c:2704 folios_put_refs+0x76c/0x860 mm/swap.c:962 folio_batch_release include/linux/pagevec.h:101 [inline] shmem_undo_range+0x64c/0x1cf0 mm/shmem.c:1040 shmem_truncate_range mm/shmem.c:1152 [inline] shmem_evict_inode+0x29b/0xa80 mm/shmem.c:1280 evict+0x4e8/0x9a0 fs/inode.c:796 __dentry_kill+0x20d/0x630 fs/dcache.c:625 dput+0x19f/0x2b0 fs/dcache.c:867 __fput+0x5ba/0xa50 fs/file_table.c:458 task_work_run+0x24f/0x310 kernel/task_work.c:239 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f Memory state around the buggy address: ffff888048fedf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888048fedf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888048fee000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff888048fee080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff888048fee100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ================================================================== final repro crashed as (corrupted=false): loop0: detected capacity change from 0 to 32768 ================================================================== BUG: KASAN: use-after-free in __ocfs2_find_path+0x203/0x7e0 fs/ocfs2/alloc.c:1824 Read of size 4 at addr ffff888048fee000 by task syz-executor261/5304 CPU: 0 UID: 0 PID: 5304 Comm: syz-executor261 Not tainted 6.13.0-rc1-syzkaller-00036-g5076001689e4 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120 print_address_description mm/kasan/report.c:378 [inline] print_report+0x169/0x550 mm/kasan/report.c:489 kasan_report+0x143/0x180 mm/kasan/report.c:602 __ocfs2_find_path+0x203/0x7e0 fs/ocfs2/alloc.c:1824 ocfs2_find_leaf+0xcf/0x230 fs/ocfs2/alloc.c:1938 ocfs2_get_clusters_nocache+0x1ad/0xbf0 fs/ocfs2/extent_map.c:418 ocfs2_get_clusters+0x5bd/0xbd0 fs/ocfs2/extent_map.c:621 ocfs2_extent_map_get_blocks+0x24c/0x7d0 fs/ocfs2/extent_map.c:668 ocfs2_read_virt_blocks+0x313/0xb10 fs/ocfs2/extent_map.c:983 ocfs2_read_dir_block fs/ocfs2/dir.c:508 [inline] ocfs2_find_entry_el fs/ocfs2/dir.c:715 [inline] ocfs2_find_entry+0x43b/0x2730 fs/ocfs2/dir.c:1080 ocfs2_find_files_on_disk+0xff/0x360 fs/ocfs2/dir.c:1981 ocfs2_lookup_ino_from_name+0xb1/0x1e0 fs/ocfs2/dir.c:2003 _ocfs2_get_system_file_inode fs/ocfs2/sysfile.c:136 [inline] ocfs2_get_system_file_inode+0x305/0x7b0 fs/ocfs2/sysfile.c:112 ocfs2_init_global_system_inodes+0x32c/0x730 fs/ocfs2/super.c:457 ocfs2_initialize_super fs/ocfs2/super.c:2248 [inline] ocfs2_fill_super+0x2f5b/0x5760 fs/ocfs2/super.c:994 mount_bdev+0x20a/0x2d0 fs/super.c:1693 legacy_get_tree+0xee/0x190 fs/fs_context.c:662 vfs_get_tree+0x90/0x2b0 fs/super.c:1814 do_new_mount+0x2be/0xb40 fs/namespace.c:3507 do_mount fs/namespace.c:3847 [inline] __do_sys_mount fs/namespace.c:4057 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4034 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f9638ddddea Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc3f3775e8 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ffc3f377600 RCX: 00007f9638ddddea RDX: 0000000020004440 RSI: 0000000020000780 RDI: 00007ffc3f377600 RBP: 0000000000000004 R08: 00007ffc3f377640 R09: 0000000000004444 R10: 0000000001000000 R11: 0000000000000282 R12: 0000000001000000 R13: 00007ffc3f377640 R14: 0000000000000003 R15: 0000000001000000 The buggy address belongs to the physical page: page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x24 pfn:0x48fee flags: 0x4fff00000000000(node=1|zone=1|lastcpupid=0x7ff) raw: 04fff00000000000 ffffea000123fbc8 ffffea00012205c8 0000000000000000 raw: 0000000000000024 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected page_owner tracks the page as freed page last allocated via order 0, migratetype Movable, gfp_mask 0x140cca(GFP_HIGHUSER_MOVABLE|__GFP_COMP), pid 5303, tgid 5303 (syz-executor261), ts 68841436682, free_ts 68984777943 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1556 prep_new_page mm/page_alloc.c:1564 [inline] get_page_from_freelist+0x365c/0x37a0 mm/page_alloc.c:3474 __alloc_pages_noprof+0x292/0x710 mm/page_alloc.c:4751 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265 folio_alloc_mpol_noprof+0x36/0x50 mm/mempolicy.c:2283 shmem_alloc_folio mm/shmem.c:1794 [inline] shmem_alloc_and_add_folio+0x49b/0x13d0 mm/shmem.c:1833 shmem_get_folio_gfp+0x5a9/0x20a0 mm/shmem.c:2355 shmem_get_folio mm/shmem.c:2461 [inline] shmem_write_begin+0x17e/0x460 mm/shmem.c:3117 generic_perform_write+0x344/0x6d0 mm/filemap.c:4055 shmem_file_write_iter+0xf9/0x120 mm/shmem.c:3293 new_sync_write fs/read_write.c:586 [inline] vfs_write+0xaeb/0xd30 fs/read_write.c:679 ksys_write+0x18f/0x2b0 fs/read_write.c:731 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 5303 tgid 5303 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1127 [inline] free_unref_folios+0xf62/0x1a90 mm/page_alloc.c:2704 folios_put_refs+0x76c/0x860 mm/swap.c:962 folio_batch_release include/linux/pagevec.h:101 [inline] shmem_undo_range+0x64c/0x1cf0 mm/shmem.c:1040 shmem_truncate_range mm/shmem.c:1152 [inline] shmem_evict_inode+0x29b/0xa80 mm/shmem.c:1280 evict+0x4e8/0x9a0 fs/inode.c:796 __dentry_kill+0x20d/0x630 fs/dcache.c:625 dput+0x19f/0x2b0 fs/dcache.c:867 __fput+0x5ba/0xa50 fs/file_table.c:458 task_work_run+0x24f/0x310 kernel/task_work.c:239 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f Memory state around the buggy address: ffff888048fedf00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffff888048fedf80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff888048fee000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff888048fee080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff888048fee100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================