------------[ cut here ]------------ WARNING: CPU: 0 PID: 6039 at mm/slab_common.c:935 free_large_kmalloc+0x34/0x12c mm/slab_common.c:936 Modules linked in: CPU: 0 PID: 6039 Comm: syz-executor.3 Not tainted 6.3.0-rc7-syzkaller-g14f8db1c0f9a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : free_large_kmalloc+0x34/0x12c mm/slab_common.c:936 lr : kfree+0xf8/0x19c mm/slab_common.c:1013 sp : ffff80001e637700 x29: ffff80001e637700 x28: ffff00013a102930 x27: 0000000000000000 x26: ffff0000c8884828 x25: ffff0000c8884820 x24: 0000000000000000 x23: ffff00013a1016b0 x22: dfff800000000000 x21: ffff8000088092a0 x20: ffff0001393e8000 x19: fffffc0004e4fa00 x18: ffff80001e637d28 x17: ffff800015c7d000 x16: ffff8000123165a4 x15: 0000000000000000 x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000406 x11: 0000000000000000 x10: 0000000000000000 x9 : 05ffc00000000000 x8 : ffff8000187c1000 x7 : ffff80000876fa38 x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000002 x2 : 0000000000000008 x1 : ffff0001393e8000 x0 : fffffc0004e4fa00 Call trace: free_large_kmalloc+0x34/0x12c mm/slab_common.c:936 kfree+0xf8/0x19c mm/slab_common.c:1013 diUnmount+0xf4/0x10c fs/jfs/jfs_imap.c:195 jfs_umount+0x15c/0x360 fs/jfs/jfs_umount.c:63 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x328 fs/super.c:500 kill_block_super+0x70/0xdc fs/super.c:1407 deactivate_locked_super+0xac/0x124 fs/super.c:331 deactivate_super+0xe0/0x100 fs/super.c:362 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1177 __cleanup_mnt+0x20/0x30 fs/namespace.c:1184 task_work_run+0x230/0x2e0 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x2180/0x3c90 arch/arm64/kernel/signal.c:1304 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x90/0x15c arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 irq event stamp: 361256 hardirqs last enabled at (361255): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (361255): [] _raw_spin_unlock_irqrestore+0x38/0x98 kernel/locking/spinlock.c:194 hardirqs last disabled at (361256): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (360666): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (360664): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- object pointer: 0x000000002a0cef7e ================================================================== BUG: KASAN: double-free in kfree+0xf8/0x19c mm/slab_common.c:1013 Free of addr ffff0001393e8000 by task syz-executor.3/6039 CPU: 0 PID: 6039 Comm: syz-executor.3 Tainted: G W 6.3.0-rc7-syzkaller-g14f8db1c0f9a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:233 show_stack+0x2c/0x44 arch/arm64/kernel/stacktrace.c:240 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:319 [inline] print_report+0x174/0x514 mm/kasan/report.c:430 kasan_report_invalid_free+0xc4/0x114 mm/kasan/report.c:501 __kasan_kfree_large+0xa4/0xc0 mm/kasan/common.c:272 kasan_kfree_large include/linux/kasan.h:170 [inline] free_large_kmalloc+0x64/0x12c mm/slab_common.c:939 kfree+0xf8/0x19c mm/slab_common.c:1013 diUnmount+0xf4/0x10c fs/jfs/jfs_imap.c:195 jfs_umount+0x15c/0x360 fs/jfs/jfs_umount.c:63 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x328 fs/super.c:500 kill_block_super+0x70/0xdc fs/super.c:1407 deactivate_locked_super+0xac/0x124 fs/super.c:331 deactivate_super+0xe0/0x100 fs/super.c:362 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1177 __cleanup_mnt+0x20/0x30 fs/namespace.c:1184 task_work_run+0x230/0x2e0 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x2180/0x3c90 arch/arm64/kernel/signal.c:1304 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x90/0x15c arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 Allocated by task 6026: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x7c mm/kasan/common.c:52 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:510 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:196 [inline] __do_kmalloc_node mm/slab_common.c:967 [inline] __kmalloc+0xcc/0x1b8 mm/slab_common.c:980 kmalloc include/linux/slab.h:584 [inline] tomoyo_realpath_from_path+0xc8/0x4cc security/tomoyo/realpath.c:251 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_path_number_perm+0x1ec/0x6a8 security/tomoyo/file.c:723 tomoyo_path_mknod+0x168/0x1b0 security/tomoyo/tomoyo.c:251 security_path_mknod+0xf8/0x14c security/security.c:1180 may_o_create fs/namei.c:3238 [inline] lookup_open fs/namei.c:3379 [inline] open_last_lookups fs/namei.c:3484 [inline] path_openat+0x974/0x27f8 fs/namei.c:3712 do_filp_open+0x1bc/0x3cc fs/namei.c:3742 do_sys_openat2+0x128/0x3d8 fs/open.c:1348 do_sys_open fs/open.c:1364 [inline] __do_sys_openat fs/open.c:1380 [inline] __se_sys_openat fs/open.c:1375 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1375 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:193 el0_svc+0x4c/0x15c arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 Freed by task 6026: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x7c mm/kasan/common.c:52 kasan_save_free_info+0x38/0x5c mm/kasan/generic.c:521 ____kasan_slab_free+0x144/0x1c0 mm/kasan/common.c:236 __kasan_slab_free+0x18/0x28 mm/kasan/common.c:244 kasan_slab_free include/linux/kasan.h:162 [inline] slab_free_hook mm/slub.c:1781 [inline] slab_free_freelist_hook mm/slub.c:1807 [inline] slab_free mm/slub.c:3787 [inline] __kmem_cache_free+0x2a8/0x49c mm/slub.c:3800 kfree+0xb8/0x19c mm/slab_common.c:1019 tomoyo_realpath_from_path+0x484/0x4cc security/tomoyo/realpath.c:286 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_path_number_perm+0x1ec/0x6a8 security/tomoyo/file.c:723 tomoyo_path_mknod+0x168/0x1b0 security/tomoyo/tomoyo.c:251 security_path_mknod+0xf8/0x14c security/security.c:1180 may_o_create fs/namei.c:3238 [inline] lookup_open fs/namei.c:3379 [inline] open_last_lookups fs/namei.c:3484 [inline] path_openat+0x974/0x27f8 fs/namei.c:3712 do_filp_open+0x1bc/0x3cc fs/namei.c:3742 do_sys_openat2+0x128/0x3d8 fs/open.c:1348 do_sys_open fs/open.c:1364 [inline] __do_sys_openat fs/open.c:1380 [inline] __se_sys_openat fs/open.c:1375 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1375 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:193 el0_svc+0x4c/0x15c arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 The buggy address belongs to the object at ffff0001393e8000 which belongs to the cache kmalloc-4k of size 4096 The buggy address is located 0 bytes inside of 4096-byte region [ffff0001393e8000, ffff0001393e9000) The buggy address belongs to the physical page: page:000000001c3feaba refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1793e8 head:000000001c3feaba order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 ffff0000c0002a80 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0001393e7f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff0001393e7f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff0001393e8000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff0001393e8080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0001393e8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== page:000000001c3feaba refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1793e8 head:000000001c3feaba order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 ffff0000c0002a80 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000 page dumped because: VM_BUG_ON_FOLIO(folio_test_slab(folio)) ------------[ cut here ]------------ kernel BUG at include/linux/memcontrol.h:379! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 6039 Comm: syz-executor.3 Tainted: G B W 6.3.0-rc7-syzkaller-g14f8db1c0f9a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __folio_memcg include/linux/memcontrol.h:379 [inline] pc : folio_memcg+0x148/0x174 include/linux/memcontrol.h:432 lr : __folio_memcg include/linux/memcontrol.h:379 [inline] lr : folio_memcg+0x148/0x174 include/linux/memcontrol.h:432 sp : ffff80001e637670 x29: ffff80001e637670 x28: ffff00013a102930 x27: 0000000000000000 x26: ffff0000c8884828 x25: ffff0000c8884820 x24: dfff800000000000 x23: 1fffff80009c9f41 x22: dfff800000000000 x21: 0000000000000000 x20: fffffc0004e4fa08 x19: fffffc0004e4fa00 x18: 1fffe000368519b6 x17: 3030303030303030 x16: ffff8000123165a4 x15: 0000000000000000 x14: 0000000000000000 x13: 29296f696c6f6628 x12: 0000000000000001 x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000 x8 : ffff0000ce3db680 x7 : 6163656220646570 x6 : ffff800008340394 x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff800008583b68 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 000000000000003c Call trace: __folio_memcg include/linux/memcontrol.h:379 [inline] folio_memcg+0x148/0x174 include/linux/memcontrol.h:432 page_memcg include/linux/memcontrol.h:437 [inline] __mod_lruvec_page_state+0x110/0x2ec mm/memcontrol.c:845 mod_lruvec_page_state include/linux/vmstat.h:562 [inline] free_large_kmalloc+0x98/0x12c mm/slab_common.c:942 kfree+0xf8/0x19c mm/slab_common.c:1013 diUnmount+0xf4/0x10c fs/jfs/jfs_imap.c:195 jfs_umount+0x15c/0x360 fs/jfs/jfs_umount.c:63 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x328 fs/super.c:500 kill_block_super+0x70/0xdc fs/super.c:1407 deactivate_locked_super+0xac/0x124 fs/super.c:331 deactivate_super+0xe0/0x100 fs/super.c:362 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1177 __cleanup_mnt+0x20/0x30 fs/namespace.c:1184 task_work_run+0x230/0x2e0 kernel/task_work.c:179 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x2180/0x3c90 arch/arm64/kernel/signal.c:1304 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x90/0x15c arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 Code: b004dba1 91350021 aa1303e0 97f9cdb5 (d4210000) ---[ end trace 0000000000000000 ]---