==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_read include/linux/instrumented.h:72 [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+0x1b9/0x400 lib/idr.c:511
Read of size 8 at addr 0000000000000000 by task syz-executor.0/399
CPU: 1 PID: 399 Comm: syz-executor.0 Not tainted 6.3.0-rc4-syzkaller-g197b6b60ae7b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x155/0x1c0 lib/dump_stack.c:106
print_report+0xe6/0x540 mm/kasan/report.c:433
kasan_report+0x16d/0x1a0 mm/kasan/report.c:536
kasan_check_range+0x298/0x2a0 mm/kasan/generic.c:187
__kasan_check_read+0x15/0x20 mm/kasan/shadow.c:31
instrument_atomic_read include/linux/instrumented.h:72 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
ida_free+0x1b9/0x400 lib/idr.c:511
mnt_release_group_id fs/namespace.c:160 [inline]
cleanup_group_ids fs/namespace.c:2093 [inline]
do_mount_setattr fs/namespace.c:4188 [inline]
__do_sys_mount_setattr fs/namespace.c:4375 [inline]
__se_sys_mount_setattr+0xc00/0x1aa0 fs/namespace.c:4334
__x64_sys_mount_setattr+0xc3/0xe0 fs/namespace.c:4334
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0x90 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f220428c0f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f22050a0168 EFLAGS: 00000246 ORIG_RAX: 00000000000001ba
RAX: ffffffffffffffda RBX: 00007f22043abf80 RCX: 00007f220428c0f9
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007f22042e7b39 R08: 0000000000000020 R09: 0000000000000000
R10: 0000000020000140 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd860e457f R14: 00007f22050a0300 R15: 0000000000022000
==================================================================
BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 1114b3067 P4D 1114b3067 PUD 10f7b2067 PMD 0
Oops: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 399 Comm: syz-executor.0 Tainted: G B 6.3.0-rc4-syzkaller-g197b6b60ae7b #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
RIP: 0010:variable_test_bit arch/x86/include/asm/bitops.h:228 [inline]
RIP: 0010:arch_test_bit arch/x86/include/asm/bitops.h:240 [inline]
RIP: 0010:_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:142 [inline]
RIP: 0010:ida_free+0x1bb/0x400 lib/idr.c:511
Code: 98 fc 4c 89 e8 48 83 e0 01 0f 85 c1 00 00 00 41 89 df 4c 89 f8 48 c1 e8 06 49 8d 7c c5 00 be 08 00 00 00 e8 d7 ec e0 fc 31 db <4d> 0f a3 7d 00 41 0f 92 c6 0f 92 c3 bf 02 00 00 00 89 de e8 4d 9d
RSP: 0018:ffffc90002f5fc80 EFLAGS: 00010046
RAX: ffff8881136ad000 RBX: 0000000000000000 RCX: ffff8881136ad000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90002f5fd70 R08: ffffffff81463617 R09: fffffbfff0d988f9
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8647ac20
R13: 0000000000000000 R14: ffffc90002f5fce0 R15: 0000000000000001
FS: 00007f22050a0700(0000) GS:ffff8881f7300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000110734000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
mnt_release_group_id fs/namespace.c:160 [inline]
cleanup_group_ids fs/namespace.c:2093 [inline]
do_mount_setattr fs/namespace.c:4188 [inline]
__do_sys_mount_setattr fs/namespace.c:4375 [inline]
__se_sys_mount_setattr+0xc00/0x1aa0 fs/namespace.c:4334
__x64_sys_mount_setattr+0xc3/0xe0 fs/namespace.c:4334
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0x90 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f220428c0f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f22050a0168 EFLAGS: 00000246 ORIG_RAX: 00000000000001ba
RAX: ffffffffffffffda RBX: 00007f22043abf80 RCX: 00007f220428c0f9
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007f22042e7b39 R08: 0000000000000020 R09: 0000000000000000
R10: 0000000020000140 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd860e457f R14: 00007f22050a0300 R15: 0000000000022000
Modules linked in:
CR2: 0000000000000000
---[ end trace 0000000000000000 ]---
RIP: 0010:variable_test_bit arch/x86/include/asm/bitops.h:228 [inline]
RIP: 0010:arch_test_bit arch/x86/include/asm/bitops.h:240 [inline]
RIP: 0010:_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:142 [inline]
RIP: 0010:ida_free+0x1bb/0x400 lib/idr.c:511
Code: 98 fc 4c 89 e8 48 83 e0 01 0f 85 c1 00 00 00 41 89 df 4c 89 f8 48 c1 e8 06 49 8d 7c c5 00 be 08 00 00 00 e8 d7 ec e0 fc 31 db <4d> 0f a3 7d 00 41 0f 92 c6 0f 92 c3 bf 02 00 00 00 89 de e8 4d 9d
RSP: 0018:ffffc90002f5fc80 EFLAGS: 00010046
RAX: ffff8881136ad000 RBX: 0000000000000000 RCX: ffff8881136ad000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90002f5fd70 R08: ffffffff81463617 R09: fffffbfff0d988f9
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8647ac20
R13: 0000000000000000 R14: ffffc90002f5fce0 R15: 0000000000000001
FS: 00007f22050a0700(0000) GS:ffff8881f7300000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000110734000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 98 cwtl
1: fc cld
2: 4c 89 e8 mov %r13,%rax
5: 48 83 e0 01 and $0x1,%rax
9: 0f 85 c1 00 00 00 jne 0xd0
f: 41 89 df mov %ebx,%r15d
12: 4c 89 f8 mov %r15,%rax
15: 48 c1 e8 06 shr $0x6,%rax
19: 49 8d 7c c5 00 lea 0x0(%r13,%rax,8),%rdi
1e: be 08 00 00 00 mov $0x8,%esi
23: e8 d7 ec e0 fc callq 0xfce0ecff
28: 31 db xor %ebx,%ebx
* 2a: 4d 0f a3 7d 00 bt %r15,0x0(%r13) <-- trapping instruction
2f: 41 0f 92 c6 setb %r14b
33: 0f 92 c3 setb %bl
36: bf 02 00 00 00 mov $0x2,%edi
3b: 89 de mov %ebx,%esi
3d: e8 .byte 0xe8
3e: 4d 9d rex.WRB popfq