general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000018-0x000000000000001f] CPU: 0 PID: 31539 Comm: kworker/0:1 Not tainted 6.8.0-rc3-syzkaller-00005-g99bd3cb0d12e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 Workqueue: events_power_efficient hash_net4_gc RIP: 0010:__lock_acquire+0xe5b/0x3b40 kernel/locking/lockdep.c:5005 Code: 11 00 00 39 05 66 63 d6 11 0f 82 c7 05 00 00 ba 01 00 00 00 e9 e4 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 30 1f 00 00 49 81 7d 00 e0 da 97 92 0f 84 7c f2 RSP: 0018:ffffc9000534f928 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000003 RSI: ffff88802ebe9dc0 RDI: 0000000000000018 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: ffffffff8f9d49d7 R11: ffffffff93421cf8 R12: 0000000000000000 R13: 0000000000000018 R14: 0000000000000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30753000 CR3: 000000000d57a000 CR4: 00000000003506f0 Call Trace: lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1ae/0x520 kernel/locking/lockdep.c:5719 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline] _raw_spin_lock_bh+0x33/0x40 kernel/locking/spinlock.c:178 spin_lock_bh include/linux/spinlock.h:356 [inline] hash_net4_gc_do+0x116/0xb90 net/netfilter/ipset/ip_set_hash_gen.h:495 hash_net4_gc+0x260/0x470 net/netfilter/ipset/ip_set_hash_gen.h:583 process_one_work+0x889/0x15e0 kernel/workqueue.c:2633 process_scheduled_works kernel/workqueue.c:2706 [inline] worker_thread+0x8b9/0x12a0 kernel/workqueue.c:2787 kthread+0x2c6/0x3b0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:242 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__lock_acquire+0xe5b/0x3b40 kernel/locking/lockdep.c:5005 Code: 11 00 00 39 05 66 63 d6 11 0f 82 c7 05 00 00 ba 01 00 00 00 e9 e4 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 30 1f 00 00 49 81 7d 00 e0 da 97 92 0f 84 7c f2 RSP: 0018:ffffc9000534f928 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000000000003 RSI: ffff88802ebe9dc0 RDI: 0000000000000018 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: ffffffff8f9d49d7 R11: ffffffff93421cf8 R12: 0000000000000000 R13: 0000000000000018 R14: 0000000000000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30753000 CR3: 000000000d57a000 CR4: 00000000003506f0 ---------------- Code disassembly (best guess): 0: 11 00 adc %eax,(%rax) 2: 00 39 add %bh,(%rcx) 4: 05 66 63 d6 11 add $0x11d66366,%eax 9: 0f 82 c7 05 00 00 jb 0x5d6 f: ba 01 00 00 00 mov $0x1,%edx 14: e9 e4 00 00 00 jmp 0xfd 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 4c 89 ea mov %r13,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 30 1f 00 00 jne 0x1f64 34: 49 81 7d 00 e0 da 97 cmpq $0xffffffff9297dae0,0x0(%r13) 3b: 92 3c: 0f .byte 0xf 3d: 84 .byte 0x84 3e: 7c f2 jl 0x32