tipc: Node number set to 3705483511 Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 0 PID: 5256 Comm: kworker/0:3 Not tainted 6.10.0-rc5-syzkaller-00018-g55027e689933 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 Workqueue: events tipc_net_finalize_work RIP: 0010:tipc_mon_reinit_self+0x112/0x1e0 net/tipc/monitor.c:719 Code: e4 ba ff ff 48 8d 78 10 48 89 f9 48 c1 e9 03 0f b6 0c 29 84 c9 74 09 80 f9 03 0f 8e a9 00 00 00 8b 48 10 4c 89 f0 48 c1 e8 03 <0f> b6 04 28 84 c0 74 04 3c 03 7e 7e 41 89 0e 4c 89 ff e8 97 e2 6e RSP: 0018:ffffc90002777bd0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00000000dcdd30f7 RDX: 0000000000000000 RSI: ffffffff8b2cb260 RDI: ffff888043d10010 RBP: dffffc0000000000 R08: 0000000000000000 R09: fffffbfff1fc90ba R10: ffffffff8fe485d7 R11: 0000000000000003 R12: 0000000000000007 R13: fffffbfff1fcd093 R14: 0000000000000000 R15: ffff88802fafd010 FS: 0000000000000000(0000) GS:ffff88806b000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c001022000 CR3: 0000000044cda000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tipc_net_finalize+0x10c/0x180 net/tipc/net.c:140 process_one_work+0x9fb/0x1b60 kernel/workqueue.c:3231 process_scheduled_works kernel/workqueue.c:3312 [inline] worker_thread+0x6c8/0xf70 kernel/workqueue.c:3393 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:tipc_mon_reinit_self+0x112/0x1e0 net/tipc/monitor.c:719 Code: e4 ba ff ff 48 8d 78 10 48 89 f9 48 c1 e9 03 0f b6 0c 29 84 c9 74 09 80 f9 03 0f 8e a9 00 00 00 8b 48 10 4c 89 f0 48 c1 e8 03 <0f> b6 04 28 84 c0 74 04 3c 03 7e 7e 41 89 0e 4c 89 ff e8 97 e2 6e RSP: 0018:ffffc90002777bd0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00000000dcdd30f7 RDX: 0000000000000000 RSI: ffffffff8b2cb260 RDI: ffff888043d10010 RBP: dffffc0000000000 R08: 0000000000000000 R09: fffffbfff1fc90ba R10: ffffffff8fe485d7 R11: 0000000000000003 R12: 0000000000000007 R13: fffffbfff1fcd093 R14: 0000000000000000 R15: ffff88802fafd010 FS: 0000000000000000(0000) GS:ffff88806b000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c001022000 CR3: 0000000044cda000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: ba ff ff 48 8d mov $0x8d48ffff,%edx 5: 78 10 js 0x17 7: 48 89 f9 mov %rdi,%rcx a: 48 c1 e9 03 shr $0x3,%rcx e: 0f b6 0c 29 movzbl (%rcx,%rbp,1),%ecx 12: 84 c9 test %cl,%cl 14: 74 09 je 0x1f 16: 80 f9 03 cmp $0x3,%cl 19: 0f 8e a9 00 00 00 jle 0xc8 1f: 8b 48 10 mov 0x10(%rax),%ecx 22: 4c 89 f0 mov %r14,%rax 25: 48 c1 e8 03 shr $0x3,%rax * 29: 0f b6 04 28 movzbl (%rax,%rbp,1),%eax <-- trapping instruction 2d: 84 c0 test %al,%al 2f: 74 04 je 0x35 31: 3c 03 cmp $0x3,%al 33: 7e 7e jle 0xb3 35: 41 89 0e mov %ecx,(%r14) 38: 4c 89 ff mov %r15,%rdi 3b: e8 .byte 0xe8 3c: 97 xchg %eax,%edi 3d: e2 6e loop 0xad