team0 (unregistering): Port device team_slave_0 removed bond0 (unregistering): Releasing backup interface bond_slave_1 bond0 (unregistering): Releasing backup interface bond_slave_0 bond0 (unregistering): Released all slaves ================================================================== BUG: KASAN: use-after-free in atomic_dec_and_test include/asm-generic/atomic-instrumented.h:259 [inline] BUG: KASAN: use-after-free in put_task_struct include/linux/sched/task.h:97 [inline] BUG: KASAN: use-after-free in _free_event+0x361/0xf10 kernel/events/core.c:4452 Write of size 4 at addr ffff88808e2604a0 by task syz-executor.1/29320 CPU: 0 PID: 29320 Comm: syz-executor.1 Not tainted 5.0.0-rc6+ #1 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x113/0x167 lib/dump_stack.c:113 print_address_description.cold.5+0x9/0x1ff mm/kasan/report.c:187 kasan_report.cold.6+0x1b/0x39 mm/kasan/report.c:317 check_memory_region_inline mm/kasan/generic.c:185 [inline] check_memory_region+0x13e/0x1b0 mm/kasan/generic.c:191 kasan_check_write+0x14/0x20 mm/kasan/common.c:106 atomic_dec_and_test include/asm-generic/atomic-instrumented.h:259 [inline] put_task_struct include/linux/sched/task.h:97 [inline] _free_event+0x361/0xf10 kernel/events/core.c:4452 free_event+0x3c/0x90 kernel/events/core.c:4473 perf_event_release_kernel+0x4f3/0xb50 kernel/events/core.c:4634 perf_release+0x32/0x50 kernel/events/core.c:4648 __fput+0x24c/0x800 fs/file_table.c:278 ____fput+0x9/0x10 fs/file_table.c:309 task_work_run+0x10e/0x190 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x1a9/0x200 arch/x86/entry/common.c:166 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x40d/0x4e0 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4129e1 Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 e4 1a 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007ffec46f63b0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00000000004129e1 RDX: 0000000000000000 RSI: 0000000000000081 RDI: 0000000000000003 RBP: 0000000000741220 R08: 0000000000741218 R09: 000000000005dad3 R10: 00007ffec46f6470 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000003 R15: 000000000073bfac Allocated by task 29322: save_stack+0x43/0xd0 mm/kasan/common.c:73 set_track mm/kasan/common.c:85 [inline] __kasan_kmalloc.constprop.9+0xcb/0xd0 mm/kasan/common.c:496 kasan_kmalloc mm/kasan/common.c:504 [inline] kasan_slab_alloc+0x12/0x20 mm/kasan/common.c:411 kmem_cache_alloc_node+0x147/0x730 mm/slab.c:3633 alloc_task_struct_node kernel/fork.c:158 [inline] dup_task_struct kernel/fork.c:845 [inline] copy_process.part.38+0x2dd2/0x7290 kernel/fork.c:1753 copy_process kernel/fork.c:1710 [inline] _do_fork+0x15d/0xbb0 kernel/fork.c:2227 __do_sys_clone kernel/fork.c:2334 [inline] __se_sys_clone kernel/fork.c:2328 [inline] __x64_sys_clone+0xba/0x140 kernel/fork.c:2328 do_syscall_64+0xd6/0x4e0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 29322: save_stack+0x43/0xd0 mm/kasan/common.c:73 set_track mm/kasan/common.c:85 [inline] __kasan_slab_free+0x102/0x150 mm/kasan/common.c:458 kasan_slab_free+0xe/0x10 mm/kasan/common.c:466 __cache_free mm/slab.c:3487 [inline] kmem_cache_free+0x83/0x290 mm/slab.c:3749 free_task_struct kernel/fork.c:163 [inline] free_task+0xa5/0xd0 kernel/fork.c:458 copy_process.part.38+0x134f/0x7290 kernel/fork.c:2159 copy_process kernel/fork.c:1710 [inline] _do_fork+0x15d/0xbb0 kernel/fork.c:2227 __do_sys_clone kernel/fork.c:2334 [inline] __se_sys_clone kernel/fork.c:2328 [inline] __x64_sys_clone+0xba/0x140 kernel/fork.c:2328 do_syscall_64+0xd6/0x4e0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff88808e260480 which belongs to the cache task_struct(49:syz1) of size 6016 The buggy address is located 32 bytes inside of 6016-byte region [ffff88808e260480, ffff88808e261c00) The buggy address belongs to the page: page:ffffea0002389800 count:1 mapcount:0 mapping:ffff888090d38040 index:0x0 compound_mapcount: 0 flags: 0x1fffc0000010200(slab|head) raw: 01fffc0000010200 ffffea000234fc08 ffff8880a9676548 ffff888090d38040 raw: 0000000000000000 ffff88808e260480 0000000100000001 ffff8880a8550a80 page dumped because: kasan: bad access detected page->mem_cgroup:ffff8880a8550a80 Memory state around the buggy address: ffff88808e260380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88808e260400: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88808e260480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88808e260500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88808e260580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================