Oops: general protection fault, probably for non-canonical address 0xdffffc000000000b: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000058-0x000000000000005f]
CPU: 0 UID: 0 PID: 13071 Comm: kbnepd bnep0 Not tainted 6.12.0-syzkaller-05480-gfcc79e1714e8 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:klist_put lib/klist.c:212 [inline]
RIP: 0010:klist_del+0x49/0x110 lib/klist.c:230
Code: f5 4d 89 f5 49 c1 ed 03 43 80 7c 25 00 00 74 08 4c 89 f7 e8 f9 77 3d f6 49 8b 1e 48 83 e3 fe 48 8d 7b 58 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 db 77 3d f6 4c 8b 7b 58 48 89 df e8 2f 99
RSP: 0018:ffffc90003097828 EFLAGS: 00010202
RAX: 000000000000000b RBX: 0000000000000000 RCX: ffff8880679a0000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000058
RBP: ffffc90003097950 R08: ffffffff823dd8ba R09: 1ffff11004e384f0
R10: dffffc0000000000 R11: ffffed1004e384f1 R12: dffffc0000000000
R13: 1ffff1100f18498c R14: ffff888078c24c60 R15: ffff888059744b88
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6c944dff98 CR3: 0000000058584000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
device_del+0x2c9/0x9b0 drivers/base/core.c:3838
unregister_netdevice_many_notify+0x1859/0x1da0 net/core/dev.c:11556
unregister_netdevice_many net/core/dev.c:11584 [inline]
unregister_netdevice_queue+0x303/0x370 net/core/dev.c:11456
unregister_netdevice include/linux/netdevice.h:3192 [inline]
unregister_netdev+0x1c/0x30 net/core/dev.c:11602
bnep_session+0x2e3c/0x3030 net/bluetooth/bnep/core.c:525
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
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: f5 4d 89 f5 49 c1 ed 03 43 80 7c 25 00 00 74 08 4c 89 f7 e8 f9 77 3d f6 49 8b 1e 48 83 e3 fe 48 8d 7b 58 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 05 e8 db 77 3d f6 4c 8b 7b 58 48 89 df e8 2f 99
RSP: 0018:ffffc90003097828 EFLAGS: 00010202
RAX: 000000000000000b RBX: 0000000000000000 RCX: ffff8880679a0000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000058
RBP: ffffc90003097950 R08: ffffffff823dd8ba R09: 1ffff11004e384f0
R10: dffffc0000000000 R11: ffffed1004e384f1 R12: dffffc0000000000
R13: 1ffff1100f18498c R14: ffff888078c24c60 R15: ffff888059744b88
FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6c944dff98 CR3: 000000006a418000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: f5 cmc
1: 4d 89 f5 mov %r14,%r13
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: 4c 89 f7 mov %r14,%rdi
13: e8 f9 77 3d f6 call 0xf63d7811
18: 49 8b 1e mov (%r14),%rbx
1b: 48 83 e3 fe and $0xfffffffffffffffe,%rbx
1f: 48 8d 7b 58 lea 0x58(%rbx),%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 db 77 3d f6 call 0xf63d7811
36: 4c 8b 7b 58 mov 0x58(%rbx),%r15
3a: 48 89 df mov %rbx,%rdi
3d: e8 .byte 0xe8
3e: 2f (bad)
3f: 99 cltd