==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_read include/linux/instrumented.h:68 [inline]
BUG: KASAN: null-ptr-deref in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
BUG: KASAN: null-ptr-deref in ida_free+0x218/0x2e0 lib/idr.c:511
Read of size 8 at addr 0000000000000048 by task syz-executor.4/22900
CPU: 1 PID: 22900 Comm: syz-executor.4 Not tainted 6.7.0-rc1-syzkaller-00015-g86d11b0e20c0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
kasan_report+0xda/0x110 mm/kasan/report.c:588
check_region_inline mm/kasan/generic.c:181 [inline]
kasan_check_range+0xef/0x190 mm/kasan/generic.c:187
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
ida_free+0x218/0x2e0 lib/idr.c:511
hci_conn_cleanup net/bluetooth/hci_conn.c:157 [inline]
hci_conn_del+0x78c/0xe10 net/bluetooth/hci_conn.c:1182
hci_conn_hash_flush+0x189/0x260 net/bluetooth/hci_conn.c:2615
hci_dev_do_reset net/bluetooth/hci_core.c:619 [inline]
hci_dev_reset+0x1ee/0x530 net/bluetooth/hci_core.c:663
hci_sock_ioctl+0x3ce/0x8d0 net/bluetooth/hci_sock.c:1136
sock_do_ioctl+0x113/0x270 net/socket.c:1220
sock_ioctl+0x22e/0x6b0 net/socket.c:1339
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:871 [inline]
__se_sys_ioctl fs/ioctl.c:857 [inline]
__x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fc02867cae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc0293cc0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fc02879bf80 RCX: 00007fc02867cae9
RDX: 0000000000000000 RSI: 00000000400448cb RDI: 0000000000000004
RBP: 00007fc0286c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fc02879bf80 R15: 00007fff8d101c68
==================================================================
BUG: kernel NULL pointer dereference, address: 0000000000000048
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 28a18067 P4D 28a18067 PUD 0
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 22900 Comm: syz-executor.4 Tainted: G B 6.7.0-rc1-syzkaller-00015-g86d11b0e20c0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:variable_test_bit arch/x86/include/asm/bitops.h:227 [inline]
RIP: 0010:arch_test_bit arch/x86/include/asm/bitops.h:239 [inline]
RIP: 0010:_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:142 [inline]
RIP: 0010:ida_free+0x218/0x2e0 lib/idr.c:511
Code: 41 5c 41 5d 41 5e 41 5f c3 e8 74 fd 1b f7 4c 89 e8 be 08 00 00 00 48 c1 e8 06 49 8d 04 c4 48 89 c7 48 89 04 24 e8 e8 8c 72 f7 <4d> 0f a3 2c 24 41 0f 92 c7 31 ff 44 89 fe e8 75 f8 1b f7 45 84 ff
RSP: 0018:ffffc9000e36faa8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 1ffff92001c6df56 RCX: ffffc90014493000
RDX: 0000000000040000 RSI: ffffffff81de0167 RDI: 0000000000000007
RBP: 0000000000006666 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000266 R14: 0000000000000283 R15: 0000000000000000
FS: 00007fc0293cc6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000048 CR3: 0000000039922000 CR4: 0000000000350ef0
Call Trace:
hci_conn_cleanup net/bluetooth/hci_conn.c:157 [inline]
hci_conn_del+0x78c/0xe10 net/bluetooth/hci_conn.c:1182
hci_conn_hash_flush+0x189/0x260 net/bluetooth/hci_conn.c:2615
hci_dev_do_reset net/bluetooth/hci_core.c:619 [inline]
hci_dev_reset+0x1ee/0x530 net/bluetooth/hci_core.c:663
hci_sock_ioctl+0x3ce/0x8d0 net/bluetooth/hci_sock.c:1136
sock_do_ioctl+0x113/0x270 net/socket.c:1220
sock_ioctl+0x22e/0x6b0 net/socket.c:1339
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:871 [inline]
__se_sys_ioctl fs/ioctl.c:857 [inline]
__x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fc02867cae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc0293cc0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fc02879bf80 RCX: 00007fc02867cae9
RDX: 0000000000000000 RSI: 00000000400448cb RDI: 0000000000000004
RBP: 00007fc0286c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007fc02879bf80 R15: 00007fff8d101c68
Modules linked in:
CR2: 0000000000000048
---[ end trace 0000000000000000 ]---
RIP: 0010:variable_test_bit arch/x86/include/asm/bitops.h:227 [inline]
RIP: 0010:arch_test_bit arch/x86/include/asm/bitops.h:239 [inline]
RIP: 0010:_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:142 [inline]
RIP: 0010:ida_free+0x218/0x2e0 lib/idr.c:511
Code: 41 5c 41 5d 41 5e 41 5f c3 e8 74 fd 1b f7 4c 89 e8 be 08 00 00 00 48 c1 e8 06 49 8d 04 c4 48 89 c7 48 89 04 24 e8 e8 8c 72 f7 <4d> 0f a3 2c 24 41 0f 92 c7 31 ff 44 89 fe e8 75 f8 1b f7 45 84 ff
RSP: 0018:ffffc9000e36faa8 EFLAGS: 00010046
RAX: 0000000000000000 RBX: 1ffff92001c6df56 RCX: ffffc90014493000
RDX: 0000000000040000 RSI: ffffffff81de0167 RDI: 0000000000000007
RBP: 0000000000006666 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000266 R14: 0000000000000283 R15: 0000000000000000
FS: 00007fc0293cc6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000048 CR3: 0000000039922000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
0: 41 5c pop %r12
2: 41 5d pop %r13
4: 41 5e pop %r14
6: 41 5f pop %r15
8: c3 ret
9: e8 74 fd 1b f7 call 0xf71bfd82
e: 4c 89 e8 mov %r13,%rax
11: be 08 00 00 00 mov $0x8,%esi
16: 48 c1 e8 06 shr $0x6,%rax
1a: 49 8d 04 c4 lea (%r12,%rax,8),%rax
1e: 48 89 c7 mov %rax,%rdi
21: 48 89 04 24 mov %rax,(%rsp)
25: e8 e8 8c 72 f7 call 0xf7728d12
* 2a: 4d 0f a3 2c 24 bt %r13,(%r12) <-- trapping instruction
2f: 41 0f 92 c7 setb %r15b
33: 31 ff xor %edi,%edi
35: 44 89 fe mov %r15d,%esi
38: e8 75 f8 1b f7 call 0xf71bf8b2
3d: 45 84 ff test %r15b,%r15b