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BUG: KASAN: slab-use-after-free in rose_timer_expiry+0x471/0x4b0
Read of size 2 at addr ffff88802874b82a by task syz-executor/5904

CPU: 1 UID: 0 PID: 5904 Comm: syz-executor Not tainted 6.17.0-rc1-syzkaller-00201-g88250d40ed59 #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
 <IRQ>
 dump_stack_lvl+0x189/0x250
 print_report+0xca/0x240
 kasan_report+0x118/0x150
 rose_timer_expiry+0x471/0x4b0
 call_timer_fn+0x17e/0x5f0
 __run_timer_base+0x61a/0x860
 run_timer_softirq+0xb7/0x180
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:_raw_spin_unlock_irq+0x29/0x50
Code: 90 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 aa 7c 21 f6 48 89 df e8 02 14 22 f6 e8 cd 65 4b f6 fb bf 01 00 00 00 <e8> 52 0d 14 f6 65 8b 05 cb 50 24 07 85 c0 74 07 5b c3 cc cc cc cc
RSP: 0018:ffffc900032d7c80 EFLAGS: 00000282
RAX: 3e43ef7311967a00 RBX: ffff888109069300 RCX: 3e43ef7311967a00
RDX: 0000000000000000 RSI: ffffffff8d9b6ea2 RDI: 0000000000000001
RBP: 0000000000000021 R08: ffffffff8fa37f37 R09: 1ffffffff1f46fe6
R10: dffffc0000000000 R11: fffffbfff1f46fe7 R12: 1ffff1102120d2f3
R13: 0000000000000000 R14: 000000001c000004 R15: ffff888109069798
 get_signal+0x11a8/0x1340
 arch_do_signal_or_restart+0x9a/0x750
 exit_to_user_mode_loop+0x75/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe41a44d9b0
Code: 44 24 20 0f 29 44 24 30 0f 29 44 24 40 48 8b 44 24 08 ff d0 48 83 c4 50 31 c0 5b 5d 41 5c 41 5d 41 5e c3 0f 1f 80 00 00 00 00 <c3> 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 c3 66 66 2e 0f 1f
RSP: 002b:00007ffff0cf0178 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 00000000000019fc RCX: 00007fe41a5c14a5
RDX: 00007ffff0cf0180 RSI: 00007ffff0cf02b0 RDI: 0000000000000011
RBP: 00007ffff0cf066c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000001388
R13: 00000000000927c0 R14: 00000000000573c0 R15: 00007ffff0cf06c0
 </TASK>

Allocated by task 20803:
 kasan_save_track+0x3e/0x80
 __kasan_kmalloc+0x93/0xb0
 __kmalloc_noprof+0x27a/0x4f0
 ib_mad_post_receive_mads+0x272/0xd60
 ib_mad_init_device+0xf3a/0x2090
 add_client_context+0x36a/0x790
 enable_device_and_get+0x19b/0x3d0
 ib_register_device+0x10c3/0x1380
 rxe_register_device+0x1ef/0x310
 rxe_net_add+0x81/0x110
 rxe_newlink+0xdd/0x190
 nldev_newlink+0x4a5/0x5a0
 rdma_nl_rcv+0x6ae/0x980
 netlink_unicast+0x82f/0x9e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 26571:
 kasan_save_track+0x3e/0x80
 kasan_save_free_info+0x46/0x50
 __kasan_slab_free+0x5b/0x80
 kfree+0x18e/0x440
 ib_mad_port_close+0x58b/0xad0
 ib_mad_remove_device+0x16e/0x260
 remove_client_context+0xb9/0x1e0
 disable_device+0x137/0x320
 __ib_unregister_device+0x2cb/0x3f0
 ib_unregister_device_and_put+0xb8/0xf0
 nldev_dellink+0x2d1/0x320
 rdma_nl_rcv+0x6ae/0x980
 netlink_unicast+0x82f/0x9e0
 netlink_sendmsg+0x805/0xb30
 __sock_sendmsg+0x21c/0x270
 ____sys_sendmsg+0x505/0x830
 ___sys_sendmsg+0x21f/0x2a0
 __x64_sys_sendmsg+0x19b/0x260
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff88802874b800
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 42 bytes inside of
 freed 512-byte region [ffff88802874b800, ffff88802874ba00)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x28748
head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88801a441c80 dead000000000100 dead000000000122
raw: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88801a441c80 dead000000000100 dead000000000122
head: 0000000000000000 0000000000100010 00000000f5000000 0000000000000000
head: 00fff00000000002 ffffea0000a1d201 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000004
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 20719791046, free_ts 0
 post_alloc_hook+0x240/0x2a0
 get_page_from_freelist+0x21e4/0x22c0
 __alloc_frozen_pages_noprof+0x181/0x370
 alloc_pages_mpol+0x232/0x4a0
 allocate_slab+0x8a/0x370
 ___slab_alloc+0xbeb/0x1410
 __kmalloc_node_track_caller_noprof+0x2f8/0x4e0
 kmemdup_noprof+0x2b/0x70
 ima_queue_key+0x7f/0x3a0
 ima_post_key_create_or_update+0x94/0x110
 security_key_post_create_or_update+0xdd/0x220
 __key_create_or_update+0x958/0xa30
 key_create_or_update+0x42/0x60
 x509_load_certificate_list+0x145/0x280
 __integrity_init_keyring+0x152/0x280
 integrity_init_keyring+0xa1/0xc0
page_owner free stack trace missing

Memory state around the buggy address:
 ffff88802874b700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88802874b780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88802874b800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
                                  ^
 ffff88802874b880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff88802874b900: 00 00 00 00 fc fc fc fc fc fc fc fc fc fc fc fc
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