R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000
==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_read_write include/linux/instrumented.h:101 [inline]
BUG: KASAN: null-ptr-deref in atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:167 [inline]
BUG: KASAN: null-ptr-deref in __refcount_sub_and_test include/linux/refcount.h:272 [inline]
BUG: KASAN: null-ptr-deref in __refcount_dec_and_test include/linux/refcount.h:315 [inline]
BUG: KASAN: null-ptr-deref in refcount_dec_and_test include/linux/refcount.h:333 [inline]
BUG: KASAN: null-ptr-deref in kref_put include/linux/kref.h:64 [inline]
BUG: KASAN: null-ptr-deref in anon_vma_name_put include/linux/mm_inline.h:365 [inline]
BUG: KASAN: null-ptr-deref in free_anon_vma_name include/linux/mm_inline.h:396 [inline]
BUG: KASAN: null-ptr-deref in vm_area_free_no_check+0x7f/0x150 kernel/fork.c:405
Write of size 4 at addr 0000000000000001 by task syz-executor416/327
CPU: 0 PID: 327 Comm: syz-executor416 Not tainted 5.15.80-syzkaller-01018-ge66b45d52787 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106
__kasan_report mm/kasan/report.c:439 [inline]
kasan_report+0x19c/0x1f0 mm/kasan/report.c:452
kasan_check_range+0x2aa/0x2e0 mm/kasan/generic.c:189
__kasan_check_write+0x14/0x20 mm/kasan/shadow.c:37
instrument_atomic_read_write include/linux/instrumented.h:101 [inline]
atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:167 [inline]
__refcount_sub_and_test include/linux/refcount.h:272 [inline]
__refcount_dec_and_test include/linux/refcount.h:315 [inline]
refcount_dec_and_test include/linux/refcount.h:333 [inline]
kref_put include/linux/kref.h:64 [inline]
anon_vma_name_put include/linux/mm_inline.h:365 [inline]
free_anon_vma_name include/linux/mm_inline.h:396 [inline]
vm_area_free_no_check+0x7f/0x150 kernel/fork.c:405
vm_area_free kernel/fork.c:418 [inline]
dup_mmap+0xc40/0xf10 kernel/fork.c:680
dup_mm+0x8e/0x2e0 kernel/fork.c:1513
copy_mm+0x108/0x1b0 kernel/fork.c:1565
copy_process+0x1295/0x3250 kernel/fork.c:2256
kernel_clone+0x21d/0x9c0 kernel/fork.c:2659
__do_sys_clone kernel/fork.c:2785 [inline]
__se_sys_clone kernel/fork.c:2769 [inline]
__x64_sys_clone+0x289/0x310 kernel/fork.c:2769
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fb2833440f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff9fbac4d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fb2833440f9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fff9fbac4f0 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000
==================================================================
BUG: kernel NULL pointer dereference, address: 0000000000000001
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
PGD 11f0db067 P4D 11f0db067 PUD 11f0de067 PMD 0
Oops: 0002 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 327 Comm: syz-executor416 Tainted: G B 5.15.80-syzkaller-01018-ge66b45d52787 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023
RIP: 0010:atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:168 [inline]
RIP: 0010:__refcount_sub_and_test include/linux/refcount.h:272 [inline]
RIP: 0010:__refcount_dec_and_test include/linux/refcount.h:315 [inline]
RIP: 0010:refcount_dec_and_test include/linux/refcount.h:333 [inline]
RIP: 0010:kref_put include/linux/kref.h:64 [inline]
RIP: 0010:anon_vma_name_put include/linux/mm_inline.h:365 [inline]
RIP: 0010:free_anon_vma_name include/linux/mm_inline.h:396 [inline]
RIP: 0010:vm_area_free_no_check+0x85/0x150 kernel/fork.c:405
Code: 42 80 3c 20 00 74 08 48 89 df e8 16 28 73 00 48 8b 1b 48 85 db 74 3a 48 89 df be 04 00 00 00 e8 11 2a 73 00 41 bc ff ff ff ff 44 0f c1 23 bf 01 00 00 00 44 89 e6 e8 e9 59 30 00 41 83 fc 01
RSP: 0018:ffffc90000947920 EFLAGS: 00010246
RAX: ffff8881071fe200 RBX: 0000000000000001 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000286 RDI: 0000000000000001
RBP: ffffc90000947950 R08: ffffffff814342f3 R09: fffffbfff0e502f9
R10: fffffbfff0e502f9 R11: 1ffffffff0e502f8 R12: 00000000ffffffff
R13: 1ffff11023e1bbab R14: ffff88811f0ddcb8 R15: ffff88811f0ddd58
FS: 0000555556576300(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000001 CR3: 000000011f0d2000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
vm_area_free kernel/fork.c:418 [inline]
dup_mmap+0xc40/0xf10 kernel/fork.c:680
dup_mm+0x8e/0x2e0 kernel/fork.c:1513
copy_mm+0x108/0x1b0 kernel/fork.c:1565
copy_process+0x1295/0x3250 kernel/fork.c:2256
kernel_clone+0x21d/0x9c0 kernel/fork.c:2659
__do_sys_clone kernel/fork.c:2785 [inline]
__se_sys_clone kernel/fork.c:2769 [inline]
__x64_sys_clone+0x289/0x310 kernel/fork.c:2769
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fb2833440f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff9fbac4d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fb2833440f9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fff9fbac4f0 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
CR2: 0000000000000001
---[ end trace 7bdbfef15b7ba23c ]---
RIP: 0010:atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:168 [inline]
RIP: 0010:__refcount_sub_and_test include/linux/refcount.h:272 [inline]
RIP: 0010:__refcount_dec_and_test include/linux/refcount.h:315 [inline]
RIP: 0010:refcount_dec_and_test include/linux/refcount.h:333 [inline]
RIP: 0010:kref_put include/linux/kref.h:64 [inline]
RIP: 0010:anon_vma_name_put include/linux/mm_inline.h:365 [inline]
RIP: 0010:free_anon_vma_name include/linux/mm_inline.h:396 [inline]
RIP: 0010:vm_area_free_no_check+0x85/0x150 kernel/fork.c:405
Code: 42 80 3c 20 00 74 08 48 89 df e8 16 28 73 00 48 8b 1b 48 85 db 74 3a 48 89 df be 04 00 00 00 e8 11 2a 73 00 41 bc ff ff ff ff 44 0f c1 23 bf 01 00 00 00 44 89 e6 e8 e9 59 30 00 41 83 fc 01
RSP: 0018:ffffc90000947920 EFLAGS: 00010246
RAX: ffff8881071fe200 RBX: 0000000000000001 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000286 RDI: 0000000000000001
RBP: ffffc90000947950 R08: ffffffff814342f3 R09: fffffbfff0e502f9
R10: fffffbfff0e502f9 R11: 1ffffffff0e502f8 R12: 00000000ffffffff
R13: 1ffff11023e1bbab R14: ffff88811f0ddcb8 R15: ffff88811f0ddd58
FS: 0000555556576300(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000001 CR3: 000000011f0d2000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1)
5: 74 08 je 0xf
7: 48 89 df mov %rbx,%rdi
a: e8 16 28 73 00 callq 0x732825
f: 48 8b 1b mov (%rbx),%rbx
12: 48 85 db test %rbx,%rbx
15: 74 3a je 0x51
17: 48 89 df mov %rbx,%rdi
1a: be 04 00 00 00 mov $0x4,%esi
1f: e8 11 2a 73 00 callq 0x732a35
24: 41 bc ff ff ff ff mov $0xffffffff,%r12d
* 2a: f0 44 0f c1 23 lock xadd %r12d,(%rbx) <-- trapping instruction
2f: bf 01 00 00 00 mov $0x1,%edi
34: 44 89 e6 mov %r12d,%esi
37: e8 e9 59 30 00 callq 0x305a25
3c: 41 83 fc 01 cmp $0x1,%r12d