==================================================================
BUG: KASAN: use-after-free in get_kprobe kernel/kprobes.c:372 [inline]
BUG: KASAN: use-after-free in get_optimized_kprobe+0x184/0x1c0 kernel/kprobes.c:489
Read of size 8 at addr ffff88801d1d4628 by task syz-executor.1/22730

CPU: 1 PID: 22730 Comm: syz-executor.1 Not tainted 5.10.96 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x107/0x163 lib/dump_stack.c:118
 print_address_description.constprop.0+0x1c/0x210 mm/kasan/report.c:385
 __kasan_report mm/kasan/report.c:545 [inline]
 kasan_report.cold+0x37/0x7c mm/kasan/report.c:562
 get_kprobe kernel/kprobes.c:372 [inline]
 get_optimized_kprobe+0x184/0x1c0 kernel/kprobes.c:489
 __disarm_kprobe+0x80/0x120 kernel/kprobes.c:978
 disarm_kprobe kernel/kprobes.c:1154 [inline]
 __disable_kprobe+0x235/0x350 kernel/kprobes.c:1793
 disable_kprobe+0x25/0x70 kernel/kprobes.c:2299
 __disable_trace_kprobe+0xef/0x180 kernel/trace/trace_kprobe.c:344
 disable_trace_kprobe+0x231/0x2d0 kernel/trace/trace_kprobe.c:422
 kprobe_register+0x61/0xb0 kernel/trace/trace_kprobe.c:1713
 perf_trace_event_unreg.isra.0+0xb0/0x210 kernel/trace/trace_event_perf.c:162
 perf_kprobe_destroy+0xc0/0x130 kernel/trace/trace_event_perf.c:294
 _free_event+0x159/0xc70 kernel/events/core.c:4951
 put_event kernel/events/core.c:5045 [inline]
 perf_event_release_kernel+0x899/0xc20 kernel/events/core.c:5160
 perf_release+0x33/0x40 kernel/events/core.c:5170
 __fput+0x285/0x980 fs/file_table.c:281
 task_work_run+0xe2/0x1a0 kernel/task_work.c:151
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:164 [inline]
 exit_to_user_mode_prepare+0x155/0x160 kernel/entry/common.c:191
 syscall_exit_to_user_mode+0x38/0x230 kernel/entry/common.c:266
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f09919e372b
Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44
RSP: 002b:00007ffe80a9c7c0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00007f09919e372b
RDX: 00007f0991b49f80 RSI: 0000000000000081 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 00007f0991b49f80
R13: 00007ffe80a9c8e0 R14: 00007f0991b43f60 R15: 000000000023fcc4

Allocated by task 22750:
 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48
 kasan_set_track mm/kasan/common.c:56 [inline]
 __kasan_kmalloc.constprop.0+0xc2/0xd0 mm/kasan/common.c:461
 kmalloc include/linux/slab.h:552 [inline]
 kzalloc include/linux/slab.h:664 [inline]
 alloc_aggr_kprobe+0x41/0x190 kernel/kprobes.c:822
 try_to_optimize_kprobe kernel/kprobes.c:853 [inline]
 register_kprobe kernel/kprobes.c:1740 [inline]
 register_kprobe+0xb78/0x1330 kernel/kprobes.c:1682
 __register_trace_kprobe kernel/trace/trace_kprobe.c:514 [inline]
 __register_trace_kprobe+0x262/0x2d0 kernel/trace/trace_kprobe.c:482
 create_local_trace_kprobe+0x1e6/0x3b0 kernel/trace/trace_kprobe.c:1840
 perf_kprobe_init+0x18c/0x280 kernel/trace/trace_event_perf.c:272
 perf_kprobe_event_init+0xf8/0x1c0 kernel/events/core.c:9655
 perf_try_init_event+0x130/0x570 kernel/events/core.c:11033
 perf_init_event kernel/events/core.c:11085 [inline]
 perf_event_alloc.part.0+0xd96/0x2b30 kernel/events/core.c:11363
 perf_event_alloc kernel/events/core.c:11742 [inline]
 __do_sys_perf_event_open+0x57c/0x2d00 kernel/events/core.c:11840
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9

Freed by task 5496:
 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:48
 kasan_set_track+0x1c/0x30 mm/kasan/common.c:56
 kasan_set_free_info+0x1b/0x30 mm/kasan/generic.c:355
 __kasan_slab_free+0x110/0x150 mm/kasan/common.c:422
 slab_free_hook mm/slub.c:1542 [inline]
 slab_free_freelist_hook+0xa9/0x180 mm/slub.c:1576
 slab_free mm/slub.c:3149 [inline]
 kfree+0xd7/0x380 mm/slub.c:4125
 free_aggr_kprobe kernel/kprobes.c:434 [inline]
 do_free_cleaned_kprobes kernel/kprobes.c:586 [inline]
 kprobe_optimizer+0x56f/0x7e0 kernel/kprobes.c:624
 process_one_work+0x9a9/0x1590 kernel/workqueue.c:2279
 worker_thread+0x61d/0x1310 kernel/workqueue.c:2425
 kthread+0x38f/0x470 kernel/kthread.c:313
 ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:296

The buggy address belongs to the object at ffff88801d1d4600
 which belongs to the cache kmalloc-192 of size 192
The buggy address is located 40 bytes inside of
 192-byte region [ffff88801d1d4600, ffff88801d1d46c0)
The buggy address belongs to the page:
page:0000000021dd6173 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1d1d4
flags: 0x100000000000200(slab)
raw: 0100000000000200 ffffea0000747540 0000000600000006 ffff888007c41500
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88801d1d4500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88801d1d4580: 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88801d1d4600: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                  ^
 ffff88801d1d4680: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
 ffff88801d1d4700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 22811 Comm: syz-executor.4 Tainted: G    B             5.10.96 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x107/0x163 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:52 [inline]
 should_fail.cold+0x5/0xa lib/fault-inject.c:146
 should_failslab+0x5/0x10 mm/slab_common.c:1193
 slab_pre_alloc_hook mm/slab.h:515 [inline]
 slab_alloc_node mm/slub.c:2821 [inline]
 slab_alloc mm/slub.c:2904 [inline]
 kmem_cache_alloc+0x5b/0x350 mm/slub.c:2909
 mem_pool_alloc mm/kmemleak.c:423 [inline]
 create_object.isra.0+0x3a/0xa20 mm/kmemleak.c:578
 kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline]
 slab_post_alloc_hook mm/slab.h:534 [inline]
 slab_alloc_node mm/slub.c:2896 [inline]
 slab_alloc mm/slub.c:2904 [inline]
 __kmalloc+0x16e/0x3e0 mm/slub.c:3967
 kmalloc_array include/linux/slab.h:592 [inline]
 kcalloc include/linux/slab.h:603 [inline]
 ext4_find_extent+0xa39/0xd20 fs/ext4/extents.c:902
 ext4_ext_map_blocks+0x1c8/0x5b90 fs/ext4/extents.c:4093
 ext4_map_blocks+0x652/0x1970 fs/ext4/inode.c:637
 ext4_alloc_file_blocks.isra.0+0x2eb/0xb30 fs/ext4/extents.c:4465
 ext4_fallocate+0x3f4/0x3aa0 fs/ext4/extents.c:4742
 vfs_fallocate+0x48f/0xcb0 fs/open.c:309
 ksys_fallocate fs/open.c:332 [inline]
 __do_sys_fallocate fs/open.c:340 [inline]
 __se_sys_fallocate fs/open.c:338 [inline]
 __x64_sys_fallocate+0xcf/0x140 fs/open.c:338
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fe5a1abdb19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe59f033188 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007fe5a1bd0f60 RCX: 00007fe5a1abdb19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007fe59f0331d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000008800000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffee4c6529f R14: 00007fe59f033300 R15: 0000000000022000
FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)
EXT4-fs (loop3): mounted filesystem without journal. Opts: ,errors=continue
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 0
CPU: 1 PID: 22916 Comm: syz-executor.4 Tainted: G    B             5.10.96 #1
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x107/0x163 lib/dump_stack.c:118
 fail_dump lib/fault-inject.c:52 [inline]
 should_fail.cold+0x5/0xa lib/fault-inject.c:146
 should_failslab+0x5/0x10 mm/slab_common.c:1193
 slab_pre_alloc_hook mm/slab.h:515 [inline]
 slab_alloc_node mm/slub.c:2821 [inline]
 slab_alloc mm/slub.c:2904 [inline]
 kmem_cache_alloc+0x5b/0x350 mm/slub.c:2909
 kmem_cache_zalloc include/linux/slab.h:654 [inline]
 ext4_mb_new_blocks+0x64d/0x48a0 fs/ext4/mballoc.c:4978
 ext4_ext_map_blocks+0x1ec0/0x5b90 fs/ext4/extents.c:4277
 ext4_map_blocks+0x652/0x1970 fs/ext4/inode.c:637
 ext4_alloc_file_blocks.isra.0+0x2eb/0xb30 fs/ext4/extents.c:4465
 ext4_fallocate+0x3f4/0x3aa0 fs/ext4/extents.c:4742
 vfs_fallocate+0x48f/0xcb0 fs/open.c:309
 ksys_fallocate fs/open.c:332 [inline]
 __do_sys_fallocate fs/open.c:340 [inline]
 __se_sys_fallocate fs/open.c:338 [inline]
 __x64_sys_fallocate+0xcf/0x140 fs/open.c:338
 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fe5a1abdb19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe59f033188 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007fe5a1bd0f60 RCX: 00007fe5a1abdb19
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007fe59f0331d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000008800000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007ffee4c6529f R14: 00007fe59f033300 R15: 0000000000022000
FAT-fs (loop2): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1)