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ODEBUG: free active (active state 0) object: ffff8880549ee090 object type: timer_list hint: rose_t0timer_expiry+0x0/0x350 net/rose/rose_link.c:-1
WARNING: CPU: 1 PID: 5824 at lib/debugobjects.c:615 debug_print_object+0x16b/0x1e0 lib/debugobjects.c:612
Modules linked in:
CPU: 1 UID: 0 PID: 5824 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:debug_print_object+0x16b/0x1e0 lib/debugobjects.c:612
Code: 4c 89 ff e8 87 e4 92 fd 4d 8b 0f 48 c7 c7 00 11 bf 8b 48 8b 34 24 4c 89 ea 89 e9 4d 89 f0 41 54 e8 3a 49 f0 fc 48 83 c4 08 90 <0f> 0b 90 90 ff 05 37 3b ea 0a 48 83 c4 08 5b 41 5c 41 5d 41 5e 41
RSP: 0018:ffffc90000a08a00 EFLAGS: 00010296
RAX: 9d3f180769256400 RBX: dffffc0000000000 RCX: ffff888079ad3c80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffffbfff1bba680 R12: ffffffff8a3924f0
R13: ffffffff8bbf1280 R14: ffff8880549ee090 R15: ffffffff8b6cf7a0
FS: 00005555871f1500(0000) GS:ffff88812623b000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007feb805156c0 CR3: 000000005964c000 CR4: 0000000000350ef0
Call Trace:
__debug_check_no_obj_freed lib/debugobjects.c:1099 [inline]
debug_check_no_obj_freed+0x3a2/0x470 lib/debugobjects.c:1129
slab_free_hook mm/slub.c:2470 [inline]
slab_free mm/slub.c:6630 [inline]
kfree+0x115/0x6d0 mm/slub.c:6837
rose_neigh_put include/net/rose.h:166 [inline]
rose_timer_expiry+0x4cb/0x600 net/rose/rose_timer.c:183
call_timer_fn+0x17e/0x5f0 kernel/time/timer.c:1747
expire_timers kernel/time/timer.c:1798 [inline]
__run_timers kernel/time/timer.c:2372 [inline]
__run_timer_base+0x61a/0x860 kernel/time/timer.c:2384
run_timer_base kernel/time/timer.c:2393 [inline]
run_timer_softirq+0xb7/0x180 kernel/time/timer.c:2403
handle_softirqs+0x286/0x870 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:723
irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1052
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:trace_lock_acquire include/trace/events/lock.h:24 [inline]
RIP: 0010:lock_acquire+0x61/0x360 kernel/locking/lockdep.c:5831
Code: 24 58 0f 1f 44 00 00 65 8b 05 ef fd d0 10 83 f8 08 0f 83 b8 01 00 00 89 c0 48 0f a3 05 18 90 df 0d 73 16 e8 f1 fd 08 00 84 c0 <75> 0d f6 05 a1 9b c9 0d 01 0f 84 d7 01 00 00 83 3d 19 c0 df 0d 00
RSP: 0018:ffffc90003c6f270 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 9d3f180769256400
RDX: 0000000000000000 RSI: ffffffff8bbf0740 RDI: ffffffff8bbf0700
RBP: ffffffff8230ecfa R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff94000356d69 R12: 0000000000000002
R13: ffffffff8df3d720 R14: 0000000000000000 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
rcu_read_lock_sched include/linux/rcupdate.h:958 [inline]
pfn_valid+0xd6/0x490 include/linux/mmzone.h:2187
page_table_check_set+0x25/0x730 mm/page_table_check.c:105
page_table_check_ptes_set include/linux/page_table_check.h:76 [inline]
set_ptes include/linux/pgtable.h:292 [inline]
__copy_present_ptes mm/memory.c:1100 [inline]
copy_present_ptes mm/memory.c:1179 [inline]
copy_pte_range mm/memory.c:1302 [inline]
copy_pmd_range+0x4b9b/0x7f00 mm/memory.c:1389
copy_pud_range mm/memory.c:1426 [inline]
copy_p4d_range mm/memory.c:1450 [inline]
copy_page_range+0xc14/0x1270 mm/memory.c:1538
dup_mmap+0xf4c/0x1b10 mm/mmap.c:1834
dup_mm kernel/fork.c:1489 [inline]
copy_mm+0x13c/0x4b0 kernel/fork.c:1541
copy_process+0x1706/0x3c00 kernel/fork.c:2181
kernel_clone+0x21e/0x840 kernel/fork.c:2609
__do_sys_clone kernel/fork.c:2750 [inline]
__se_sys_clone kernel/fork.c:2734 [inline]
__x64_sys_clone+0x18b/0x1e0 kernel/fork.c:2734
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7feb7f785e13
Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
RSP: 002b:00007fff510bc998 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007feb7f785e13
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: 00005555871f17d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00000000000927c0 R14: 0000000000140dc5 R15: 00007fff510bcb30
----------------
Code disassembly (best guess):
0: 24 58 and $0x58,%al
2: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
7: 65 8b 05 ef fd d0 10 mov %gs:0x10d0fdef(%rip),%eax # 0x10d0fdfd
e: 83 f8 08 cmp $0x8,%eax
11: 0f 83 b8 01 00 00 jae 0x1cf
17: 89 c0 mov %eax,%eax
19: 48 0f a3 05 18 90 df bt %rax,0xddf9018(%rip) # 0xddf9039
20: 0d
21: 73 16 jae 0x39
23: e8 f1 fd 08 00 call 0x8fe19
28: 84 c0 test %al,%al
* 2a: 75 0d jne 0x39 <-- trapping instruction
2c: f6 05 a1 9b c9 0d 01 testb $0x1,0xdc99ba1(%rip) # 0xdc99bd4
33: 0f 84 d7 01 00 00 je 0x210
39: 83 3d 19 c0 df 0d 00 cmpl $0x0,0xddfc019(%rip) # 0xddfc059