------------[ cut here ]------------
ODEBUG: free active (active state 0) object: ffff88805f028090 object type: timer_list hint: rose_t0timer_expiry+0x0/0x350
WARNING: CPU: 0 PID: 7888 at lib/debugobjects.c:518 debug_print_object lib/debugobjects.c:515 [inline]
WARNING: CPU: 0 PID: 7888 at lib/debugobjects.c:518 __debug_check_no_obj_freed lib/debugobjects.c:990 [inline]
WARNING: CPU: 0 PID: 7888 at lib/debugobjects.c:518 debug_check_no_obj_freed+0x446/0x540 lib/debugobjects.c:1020
Modules linked in:
CPU: 0 PID: 7888 Comm: syz.4.402 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:debug_print_object lib/debugobjects.c:515 [inline]
RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:990 [inline]
RIP: 0010:debug_check_no_obj_freed+0x446/0x540 lib/debugobjects.c:1020
Code: 4c 8b 4d 00 48 c7 c7 20 98 1c 8b 48 c7 c6 80 94 1c 8b 48 c7 c2 a0 99 1c 8b 8b 0c 24 4d 89 f8 41 55 e8 de 84 1f fd 48 83 c4 08 <0f> 0b 4c 8b 6c 24 18 48 b9 00 00 00 00 00 fc ff df ff 05 13 f6 59
RSP: 0000:ffffc90000007a50 EFLAGS: 00010296
RAX: 1773cf08aacf6800 RBX: ffffffff9751c6d0 RCX: ffff88802d090000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffffff8accac60 R08: ffffc90000007647 R09: 1ffff92000000ec8
R10: dffffc0000000000 R11: fffff52000000ec9 R12: ffff88805f028200
R13: ffffffff897b0790 R14: ffff88805f028000 R15: ffff88805f028090
FS:  00007f0dab6126c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2da12ff8 CR3: 00000000247d1000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 slab_free_hook mm/slub.c:1786 [inline]
 slab_free_freelist_hook+0xd2/0x1a0 mm/slub.c:1837
 slab_free mm/slub.c:3830 [inline]
 __kmem_cache_free+0xba/0x1e0 mm/slub.c:3843
 rose_neigh_put include/net/rose.h:166 [inline]
 rose_timer_expiry+0x4c6/0x5f0 net/rose/rose_timer.c:183
 call_timer_fn+0x189/0x540 kernel/time/timer.c:1701
 expire_timers kernel/time/timer.c:1752 [inline]
 __run_timers+0x542/0x800 kernel/time/timer.c:2023
 run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036
 handle_softirqs+0x280/0x820 kernel/softirq.c:578
 __do_softirq kernel/softirq.c:612 [inline]
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
 sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:task_css include/linux/cgroup.h:436 [inline]
RIP: 0010:mem_cgroup_from_task+0xae/0x110 mm/memcontrol.c:1038
Code: e8 03 42 0f b6 04 38 84 c0 75 69 41 f6 06 04 75 09 e8 76 93 89 ff 85 c0 74 23 48 83 c3 20 48 89 d8 48 c1 e8 03 42 80 3c 38 00 <74> 08 48 89 df e8 a8 30 f9 ff 48 8b 03 5b 41 5e 41 5f c3 e8 da 37
RSP: 0000:ffffc900051ff408 EFLAGS: 00000246
RAX: 1ffff11029a52704 RBX: ffff88814d293820 RCX: 1773cf08aacf6800
RDX: 0000000000000000 RSI: ffffffff8acadb60 RDI: ffffffff8b1c8e60
RBP: 1ffff1100f85681a R08: dffffc0000000000 R09: 1ffffffff2238aa0
R10: dffffc0000000000 R11: fffffbfff2238aa1 R12: 1ffff92000a3fea8
R13: dffffc0000000000 R14: ffff88802636802c R15: dffffc0000000000
 get_mem_cgroup_from_mm+0xd6/0x290 mm/memcontrol.c:1091
 __mem_cgroup_charge+0x15/0x80 mm/memcontrol.c:7110
 mem_cgroup_charge include/linux/memcontrol.h:686 [inline]
 __filemap_add_folio+0xb57/0x17b0 mm/filemap.c:859
 filemap_add_folio+0xae/0x3c0 mm/filemap.c:967
 filemap_create_folio mm/filemap.c:2541 [inline]
 filemap_get_pages+0xa0e/0x1e90 mm/filemap.c:2601
 filemap_splice_read+0x3a6/0xa30 mm/filemap.c:2966
 splice_direct_to_actor+0x26b/0x8c0 fs/splice.c:1069
 do_splice_direct+0x1d5/0x2f0 fs/splice.c:1194
 do_sendfile+0x5f2/0xef0 fs/read_write.c:1254
 __do_sys_sendfile64 fs/read_write.c:1322 [inline]
 __se_sys_sendfile64+0x145/0x1a0 fs/read_write.c:1308
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f0daa79c819
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:00007f0dab612028 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f0daaa16180 RCX: 00007f0daa79c819
RDX: 0000000000000000 RSI: 000000000000000a RDI: 000000000000000b
RBP: 00007f0daa832c91 R08: 0000000000000000 R09: 0000000000000000
R10: 000000007ffff000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0daaa16218 R14: 00007f0daaa16180 R15: 00007ffe4a236438
 </TASK>
----------------
Code disassembly (best guess):
   0:	e8 03 42 0f b6       	call   0xb60f4208
   5:	04 38                	add    $0x38,%al
   7:	84 c0                	test   %al,%al
   9:	75 69                	jne    0x74
   b:	41 f6 06 04          	testb  $0x4,(%r14)
   f:	75 09                	jne    0x1a
  11:	e8 76 93 89 ff       	call   0xff89938c
  16:	85 c0                	test   %eax,%eax
  18:	74 23                	je     0x3d
  1a:	48 83 c3 20          	add    $0x20,%rbx
  1e:	48 89 d8             	mov    %rbx,%rax
  21:	48 c1 e8 03          	shr    $0x3,%rax
  25:	42 80 3c 38 00       	cmpb   $0x0,(%rax,%r15,1)
* 2a:	74 08                	je     0x34 <-- trapping instruction
  2c:	48 89 df             	mov    %rbx,%rdi
  2f:	e8 a8 30 f9 ff       	call   0xfff930dc
  34:	48 8b 03             	mov    (%rbx),%rax
  37:	5b                   	pop    %rbx
  38:	41 5e                	pop    %r14
  3a:	41 5f                	pop    %r15
  3c:	c3                   	ret
  3d:	e8                   	.byte 0xe8
  3e:	da 37                	fidivl (%rdi)