el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 read_mapping_page failed! jfs_mount_rw: diMount failed! ================================================================== BUG: KASAN: double-free or invalid-free in slab_free mm/slub.c:3499 [inline] BUG: KASAN: double-free or invalid-free in kfree+0x178/0x410 mm/slub.c:4559 CPU: 1 PID: 3962 Comm: syz-executor354 Not tainted 5.15.117-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 print_address_description+0x7c/0x3f0 mm/kasan/report.c:248 kasan_report_invalid_free+0x64/0x94 mm/kasan/report.c:373 ____kasan_slab_free+0x134/0x164 __kasan_slab_free+0x18/0x28 mm/kasan/common.c:374 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1705 [inline] slab_free_freelist_hook+0x128/0x1ec mm/slub.c:1731 slab_free mm/slub.c:3499 [inline] kfree+0x178/0x410 mm/slub.c:4559 diUnmount+0xf4/0x10c fs/jfs/jfs_imap.c:195 jfs_umount+0x110/0x338 fs/jfs/jfs_umount.c:63 jfs_put_super+0x90/0x188 fs/jfs/super.c:194 generic_shutdown_super+0x130/0x29c fs/super.c:475 kill_block_super+0x70/0xdc fs/super.c:1405 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0x108/0x128 fs/super.c:366 cleanup_mnt+0x3c0/0x474 fs/namespace.c:1143 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150 task_work_run+0x130/0x1e4 kernel/task_work.c:164 exit_task_work include/linux/task_work.h:32 [inline] do_exit+0x688/0x2134 kernel/exit.c:872 do_group_exit+0x110/0x268 kernel/exit.c:994 __do_sys_exit_group kernel/exit.c:1005 [inline] __se_sys_exit_group kernel/exit.c:1003 [inline] __wake_up_parent+0x0/0x60 kernel/exit.c:1003 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Allocated by task 3962: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] ____kasan_kmalloc+0xbc/0xfc mm/kasan/common.c:513 __kasan_kmalloc+0x10/0x1c mm/kasan/common.c:522 kasan_kmalloc include/linux/kasan.h:264 [inline] kmem_cache_alloc_trace+0x27c/0x47c mm/slub.c:3247 kmalloc include/linux/slab.h:591 [inline] kzalloc include/linux/slab.h:721 [inline] kobject_uevent_env+0x26c/0x898 lib/kobject_uevent.c:524 kobject_uevent+0x2c/0x3c lib/kobject_uevent.c:642 __kobject_del+0xd8/0x2d4 lib/kobject.c:625 kobject_cleanup lib/kobject.c:704 [inline] kobject_release lib/kobject.c:744 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x2dc/0x438 lib/kobject.c:761 net_rx_queue_update_kobjects+0x3b4/0x42c net/core/net-sysfs.c:1124 remove_queue_kobjects net/core/net-sysfs.c:1822 [inline] netdev_unregister_kobject+0xf0/0x204 net/core/net-sysfs.c:1976 unregister_netdevice_many+0x12c8/0x189c net/core/dev.c:11096 unregister_netdevice_queue+0x2d0/0x31c net/core/dev.c:11002 unregister_netdevice include/linux/netdevice.h:3015 [inline] __tun_detach+0xb74/0x12b0 drivers/net/tun.c:685 tun_detach drivers/net/tun.c:701 [inline] tun_chr_close+0x118/0x20c drivers/net/tun.c:3431 __fput+0x30c/0x7f0 fs/file_table.c:280 ____fput+0x20/0x30 fs/file_table.c:308 task_work_run+0x130/0x1e4 kernel/task_work.c:164 exit_task_work include/linux/task_work.h:32 [inline] do_exit+0x688/0x2134 kernel/exit.c:872 do_group_exit+0x110/0x268 kernel/exit.c:994 __do_sys_exit_group kernel/exit.c:1005 [inline] __se_sys_exit_group kernel/exit.c:1003 [inline] __wake_up_parent+0x0/0x60 kernel/exit.c:1003 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Freed by task 3962: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4c/0x84 mm/kasan/common.c:46 kasan_set_free_info+0x28/0x4c mm/kasan/generic.c:360 ____kasan_slab_free+0x118/0x164 mm/kasan/common.c:366 __kasan_slab_free+0x18/0x28 mm/kasan/common.c:374 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1705 [inline] slab_free_freelist_hook+0x128/0x1ec mm/slub.c:1731 slab_free mm/slub.c:3499 [inline] kfree+0x178/0x410 mm/slub.c:4559 kobject_uevent_env+0x354/0x898 lib/kobject_uevent.c:626 kobject_uevent+0x2c/0x3c lib/kobject_uevent.c:642 __kobject_del+0xd8/0x2d4 lib/kobject.c:625 kobject_cleanup lib/kobject.c:704 [inline] kobject_release lib/kobject.c:744 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x2dc/0x438 lib/kobject.c:761 net_rx_queue_update_kobjects+0x3b4/0x42c net/core/net-sysfs.c:1124 remove_queue_kobjects net/core/net-sysfs.c:1822 [inline] netdev_unregister_kobject+0xf0/0x204 net/core/net-sysfs.c:1976 unregister_netdevice_many+0x12c8/0x189c net/core/dev.c:11096 unregister_netdevice_queue+0x2d0/0x31c net/core/dev.c:11002 unregister_netdevice include/linux/netdevice.h:3015 [inline] __tun_detach+0xb74/0x12b0 drivers/net/tun.c:685 tun_detach drivers/net/tun.c:701 [inline] tun_chr_close+0x118/0x20c drivers/net/tun.c:3431 __fput+0x30c/0x7f0 fs/file_table.c:280 ____fput+0x20/0x30 fs/file_table.c:308 task_work_run+0x130/0x1e4 kernel/task_work.c:164 exit_task_work include/linux/task_work.h:32 [inline] do_exit+0x688/0x2134 kernel/exit.c:872 do_group_exit+0x110/0x268 kernel/exit.c:994 __do_sys_exit_group kernel/exit.c:1005 [inline] __se_sys_exit_group kernel/exit.c:1003 [inline] __wake_up_parent+0x0/0x60 kernel/exit.c:1003 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 The buggy address belongs to the object at ffff0000c76a0000 which belongs to the cache kmalloc-4k of size 4096 The buggy address is located 0 bytes inside of 4096-byte region [ffff0000c76a0000, ffff0000c76a1000) The buggy address belongs to the page: page:000000005cf71b91 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1076a0 head:000000005cf71b91 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 0000000000000000 dead000000000122 ffff0000c0002a80 raw: 0000000000000000 0000000080040004 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000c769ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff0000c769ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff0000c76a0000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff0000c76a0080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000c76a0100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================