------------[ cut here ]------------
ODEBUG: free active (active state 0) object type: timer_list hint: rose_transmit_restart_request net/rose/rose_link.c:-1 [inline]
ODEBUG: free active (active state 0) object type: timer_list hint: rose_t0timer_expiry+0x0/0x350 net/rose/rose_link.c:284
WARNING: CPU: 0 PID: 22195 at lib/debugobjects.c:518 debug_print_object lib/debugobjects.c:515 [inline]
WARNING: CPU: 0 PID: 22195 at lib/debugobjects.c:518 __debug_check_no_obj_freed lib/debugobjects.c:979 [inline]
WARNING: CPU: 0 PID: 22195 at lib/debugobjects.c:518 debug_check_no_obj_freed+0x43c/0x530 lib/debugobjects.c:1009
Modules linked in:
CPU: 0 PID: 22195 Comm: syz.1.4420 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:979 [inline]
RIP: 0010:debug_check_no_obj_freed+0x43c/0x530 lib/debugobjects.c:1009
Code: ef e8 98 a4 bd fd 4c 8b 45 00 48 c7 c7 00 1d df 8a 48 c7 c6 c0 19 df 8a 48 c7 c2 60 1e df 8a 8b 0c 24 4d 89 e9 e8 14 08 38 fd <0f> 0b 4c 8b 6c 24 18 48 b9 00 00 00 00 00 fc ff df ff 05 d5 4b 0a
RSP: 0018:ffffc90000007a10 EFLAGS: 00010246
RAX: 73326dbdc4d5f900 RBX: ffffffff96ea90d8 RCX: ffff88804d8f3b80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: ffffffff8a8deea0 R08: ffffc90000007687 R09: 1ffff92000000ed0
R10: dffffc0000000000 R11: fffff52000000ed1 R12: ffff888054e3aa00
R13: ffffffff892b80d0 R14: ffff888054e3a000 R15: ffff888054e3a890
FS:  000055558c05e500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7356c4edd5 CR3: 0000000042fde000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 slab_free_hook mm/slub.c:1704 [inline]
 slab_free_freelist_hook+0xd2/0x1a0 mm/slub.c:1755
 slab_free mm/slub.c:3687 [inline]
 __kmem_cache_free+0xb6/0x1f0 mm/slub.c:3700
 rose_neigh_put include/net/rose.h:166 [inline]
 rose_timer_expiry+0x4a7/0x5d0 net/rose/rose_timer.c:183
 call_timer_fn+0x1ac/0x670 kernel/time/timer.c:1701
 expire_timers kernel/time/timer.c:1752 [inline]
 __run_timers+0x53e/0x800 kernel/time/timer.c:2023
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:2036
 handle_softirqs+0x2a1/0x930 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:mas_next_nentry lib/maple_tree.c:4756 [inline]
RIP: 0010:mas_next_entry+0xc1d/0xed0 lib/maple_tree.c:4839
Code: f6 0f 94 c1 0a 4c 24 20 08 c1 74 0d e8 2c 88 67 f7 45 31 f6 e9 32 fa ff ff e8 1f 88 67 f7 eb 14 e8 18 88 67 f7 e9 19 fa ff ff <e8> 0e 88 67 f7 4c 8b 6c 24 18 48 8b 44 24 50 42 80 3c 38 00 48 8b
RSP: 0018:ffffc900048a7800 EFLAGS: 00000286
RAX: ffff8880449c6400 RBX: 0000000000000001 RCX: ffffffffffffff00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900048a7920 R08: ffff88804d8f3b80 R09: 0000000000000003
R10: 0000000000000003 R11: 0000000000000000 R12: ffff8880449c6000
R13: 0000000000000001 R14: ffff8880755660d8 R15: dffffc0000000000
 validate_mm+0xf0/0x2e0 mm/mmap.c:334
 __vma_adjust+0x1855/0x1cd0 mm/mmap.c:879
 vma_adjust include/linux/mm.h:2810 [inline]
 __split_vma+0x3a7/0x500 mm/mmap.c:-1
 mprotect_fixup+0x5b1/0x800 mm/mprotect.c:623
 do_mprotect_pkey+0x7fe/0xba0 mm/mprotect.c:792
 __do_sys_mprotect mm/mprotect.c:819 [inline]
 __se_sys_mprotect mm/mprotect.c:816 [inline]
 __x64_sys_mprotect+0x7c/0x90 mm/mprotect.c:816
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f7356b9c617
Code: 89 38 eb 84 0f 1f 80 00 00 00 00 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff e9 7a ff ff ff b8 0a 00 00 00 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:00007fffc50266d8 EFLAGS: 00000206 ORIG_RAX: 000000000000000a
RAX: ffffffffffffffda RBX: 00007f7357a506c0 RCX: 00007f7356b9c617
RDX: 0000000000000003 RSI: 0000000000020000 RDI: 00007f7357a31000
RBP: 0000000000000000 R08: 00000000ffffffff R09: 0000000000000000
R10: 0000000000021000 R11: 0000000000000206 R12: 00007fffc5026830
R13: ffffffffffffffc0 R14: 0000000000001000 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess):
   0:	f6 0f 94             	testb  $0x94,(%rdi)
   3:	c1 0a 4c             	rorl   $0x4c,(%rdx)
   6:	24 20                	and    $0x20,%al
   8:	08 c1                	or     %al,%cl
   a:	74 0d                	je     0x19
   c:	e8 2c 88 67 f7       	call   0xf767883d
  11:	45 31 f6             	xor    %r14d,%r14d
  14:	e9 32 fa ff ff       	jmp    0xfffffa4b
  19:	e8 1f 88 67 f7       	call   0xf767883d
  1e:	eb 14                	jmp    0x34
  20:	e8 18 88 67 f7       	call   0xf767883d
  25:	e9 19 fa ff ff       	jmp    0xfffffa43
* 2a:	e8 0e 88 67 f7       	call   0xf767883d <-- trapping instruction
  2f:	4c 8b 6c 24 18       	mov    0x18(%rsp),%r13
  34:	48 8b 44 24 50       	mov    0x50(%rsp),%rax
  39:	42 80 3c 38 00       	cmpb   $0x0,(%rax,%r15,1)
  3e:	48                   	rex.W
  3f:	8b                   	.byte 0x8b