general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 PID: 17139 Comm: kworker/1:10 Not tainted 6.7.0-rc2-syzkaller-00557-g6afb936f73cf #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 Workqueue: events page_pool_release_retry RIP: 0010:__hlist_del include/linux/list.h:988 [inline] RIP: 0010:hlist_del include/linux/list.h:1002 [inline] RIP: 0010:page_pool_unlist+0xd1/0x170 net/core/page_pool_user.c:342 Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 90 00 00 00 4c 8b a3 f0 06 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 68 48 85 ed 49 89 2c 24 74 24 e8 1b c7 07 f9 48 8d RSP: 0018:ffffc9000cb1fbd8 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff8880220e1000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880220e16f0 RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff1d57fd4 R10: ffffffff8eabfea3 R11: 0000000000000002 R12: 0000000000000000 R13: ffff8880220e1000 R14: dffffc0000000000 R15: 0000000000000002 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200001c0 CR3: 000000007673e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __page_pool_destroy net/core/page_pool.c:851 [inline] page_pool_release+0x507/0x6b0 net/core/page_pool.c:891 page_pool_release_retry+0x62/0x2f0 net/core/page_pool.c:903 process_one_work+0x886/0x15d0 kernel/workqueue.c:2630 process_scheduled_works kernel/workqueue.c:2703 [inline] worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784 kthread+0x2c6/0x3a0 kernel/kthread.c:388 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__hlist_del include/linux/list.h:988 [inline] RIP: 0010:hlist_del include/linux/list.h:1002 [inline] RIP: 0010:page_pool_unlist+0xd1/0x170 net/core/page_pool_user.c:342 Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 90 00 00 00 4c 8b a3 f0 06 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 68 48 85 ed 49 89 2c 24 74 24 e8 1b c7 07 f9 48 8d RSP: 0018:ffffc9000cb1fbd8 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff8880220e1000 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff8880220e16f0 RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff1d57fd4 R10: ffffffff8eabfea3 R11: 0000000000000002 R12: 0000000000000000 R13: ffff8880220e1000 R14: dffffc0000000000 R15: 0000000000000002 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200001c0 CR3: 000000001d144000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: df 48 89 fisttps -0x77(%rax) 3: fa cli 4: 48 c1 ea 03 shr $0x3,%rdx 8: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) c: 0f 85 90 00 00 00 jne 0xa2 12: 4c 8b a3 f0 06 00 00 mov 0x6f0(%rbx),%r12 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 4c 89 e2 mov %r12,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 75 68 jne 0x98 30: 48 85 ed test %rbp,%rbp 33: 49 89 2c 24 mov %rbp,(%r12) 37: 74 24 je 0x5d 39: e8 1b c7 07 f9 call 0xf907c759 3e: 48 rex.W 3f: 8d .byte 0x8d