Oops: general protection fault, probably for non-canonical address 0xdffffc000000000b: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000058-0x000000000000005f] CPU: 0 UID: 0 PID: 6967 Comm: kbnepd bnep0 Not tainted 6.15.0-rc5-syzkaller-00984-gd97e2634fbdc #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/29/2025 RIP: 0010:klist_put lib/klist.c:212 [inline] RIP: 0010:klist_del+0x49/0x110 lib/klist.c:230 Code: f6 49 89 dd 49 c1 ed 03 43 80 7c 25 00 00 74 08 48 89 df e8 39 60 d4 f6 4c 8b 33 49 83 e6 fe 49 8d 7e 58 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 1b 60 d4 f6 4d 8b 7e 58 4c 89 f7 e8 bf 41 RSP: 0018:ffffc9000b4877a8 EFLAGS: 00010202 RAX: 000000000000000b RBX: ffff88806c02f460 RCX: ffff88805d703c00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000058 RBP: ffffc9000b4878d0 R08: ffff88807bf983c3 R09: 1ffff1100f7f3078 R10: dffffc0000000000 R11: ffffed100f7f3079 R12: dffffc0000000000 R13: 1ffff1100d805e8c R14: 0000000000000000 R15: ffff88802af04768 FS: 0000000000000000(0000) GS:ffff8881260c0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f41aba87d58 CR3: 000000005eea2000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: device_del+0x280/0x8e0 drivers/base/core.c:3858 unregister_netdevice_many_notify+0x1d52/0x2320 net/core/dev.c:12059 unregister_netdevice_many net/core/dev.c:12087 [inline] unregister_netdevice_queue+0x33c/0x380 net/core/dev.c:11931 unregister_netdevice include/linux/netdevice.h:3373 [inline] unregister_netdev+0x1f/0x60 net/core/dev.c:12105 bnep_session+0x294d/0x2b40 net/bluetooth/bnep/core.c:525 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:klist_put lib/klist.c:212 [inline] RIP: 0010:klist_del+0x49/0x110 lib/klist.c:230 Code: f6 49 89 dd 49 c1 ed 03 43 80 7c 25 00 00 74 08 48 89 df e8 39 60 d4 f6 4c 8b 33 49 83 e6 fe 49 8d 7e 58 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 1b 60 d4 f6 4d 8b 7e 58 4c 89 f7 e8 bf 41 RSP: 0018:ffffc9000b4877a8 EFLAGS: 00010202 RAX: 000000000000000b RBX: ffff88806c02f460 RCX: ffff88805d703c00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000058 RBP: ffffc9000b4878d0 R08: ffff88807bf983c3 R09: 1ffff1100f7f3078 R10: dffffc0000000000 R11: ffffed100f7f3079 R12: dffffc0000000000 R13: 1ffff1100d805e8c R14: 0000000000000000 R15: ffff88802af04768 FS: 0000000000000000(0000) GS:ffff8881260c0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f41aba87d58 CR3: 000000000dd36000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: f6 49 89 dd testb $0xdd,-0x77(%rcx) 4: 49 c1 ed 03 shr $0x3,%r13 8: 43 80 7c 25 00 00 cmpb $0x0,0x0(%r13,%r12,1) e: 74 08 je 0x18 10: 48 89 df mov %rbx,%rdi 13: e8 39 60 d4 f6 call 0xf6d46051 18: 4c 8b 33 mov (%rbx),%r14 1b: 49 83 e6 fe and $0xfffffffffffffffe,%r14 1f: 49 8d 7e 58 lea 0x58(%r14),%rdi 23: 48 89 f8 mov %rdi,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction 2f: 74 05 je 0x36 31: e8 1b 60 d4 f6 call 0xf6d46051 36: 4d 8b 7e 58 mov 0x58(%r14),%r15 3a: 4c 89 f7 mov %r14,%rdi 3d: e8 .byte 0xe8 3e: bf .byte 0xbf 3f: 41 rex.B