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BUG: KFENCE: out-of-bounds read in dtSplitPage+0x10f9/0x37c0

Out-of-bounds read at 0xffff88823c56308d (2357B right of kfence-#176):
 dtSplitPage+0x10f9/0x37c0
 dtInsert+0x107a/0x5de0
 jfs_create+0x75b/0xb10
 path_openat+0x18dd/0x3e20
 do_filp_open+0x22d/0x490
 do_sys_openat2+0x12f/0x220
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

kfence-#176: 0xffff88823c562758-0xffff88823c562fff, size=2216, cache=jfs_ip

allocated by task 6638 on cpu 0 at 90.347312s (0.146746s ago):
 jfs_alloc_inode+0x28/0x70
 alloc_inode+0x6a/0x1b0
 iget_locked+0x131/0x6a0
 jfs_iget+0x24/0x470
 jfs_lookup+0x220/0x420
 __lookup_slow+0x2b7/0x410
 lookup_slow+0x53/0x70
 path_lookupat+0x3f5/0x8c0
 filename_lookup+0x256/0x5d0
 user_path_at+0x3a/0x60
 __se_sys_chdir+0x98/0x280
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 0 UID: 0 PID: 6638 Comm: syz.2.257 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:dtSplitPage+0x10f9/0x37c0
Code: fe 41 c1 e5 05 4c 03 ac 24 c8 00 00 00 4c 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 0f 85 39 01 00 00 <45> 0f b6 7d 00 4d 85 f6 75 20 e8 c8 14 73 fe 41 0f b7 c7 44 69 f8
RSP: 0018:ffffc90003e371a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: 0000000000000002 RSI: 0000000000200000 RDI: 0000000000000000
RBP: 0000000000000001 R08: ffff88811126ba80 R09: 0000000000000002
R10: 0000000000000004 R11: 0000000000000002 R12: 0000000000000001
R13: ffff88823c56308d R14: 0000000000200000 R15: 0000000000000001
FS:  00007f8d75f076c0(0000) GS:ffff88818e328000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff88823c56308d CR3: 0000000112308000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 dtInsert+0x107a/0x5de0
 jfs_create+0x75b/0xb10
 path_openat+0x18dd/0x3e20
 do_filp_open+0x22d/0x490
 do_sys_openat2+0x12f/0x220
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0xe2/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8d74f9acb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8d75f07028 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f8d75215fa0 RCX: 00007f8d74f9acb9
RDX: 000000000000275a RSI: 0000200000000040 RDI: ffffffffffffff9c
RBP: 00007f8d75008bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8d75216038 R14: 00007f8d75215fa0 R15: 00007ffcfa1269a8
 </TASK>
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