general protection fault, probably for non-canonical address 0xdffffc001fffe000: 0000 [#1] PREEMPT SMP KASAN
KASAN: probably user-memory-access in range [0x00000000ffff0000-0x00000000ffff0007]
CPU: 0 PID: 18768 Comm: udevadm Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:__ref_is_percpu include/linux/percpu-refcount.h:174 [inline]
RIP: 0010:percpu_ref_get_many+0x8d/0x140 include/linux/percpu-refcount.h:204
Code: 01 48 c7 c7 e0 b7 b6 8a be 14 03 00 00 48 c7 c2 20 b8 b6 8a e8 a4 18 83 ff 49 bc 00 00 00 00 00 fc ff df 4c 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 ff e8 04 3b f8 ff 49 8b 07 a8 03 75 62
RSP: 0018:ffffc9000477f7d8 EFLAGS: 00010006
RAX: 000000001fffe000 RBX: ffffffff81e49a59 RCX: 7d4b003fb5639100
RDX: 0000000000000000 RSI: ffffffff8afc7020 RDI: ffffffff8afc6fe0
RBP: ffffc9000477f8f8 R08: dffffc0000000000 R09: 1ffffffff21b4aa0
R10: dffffc0000000000 R11: fffffbfff21b4aa1 R12: dffffc0000000000
R13: 1ffff110171c6ff6 R14: 0000000000000001 R15: 00000000ffff0000
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fafbac3be9c CR3: 00000000664dd000 CR4: 00000000003506f0
DR0: fffffffffffffff1 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
percpu_ref_get include/linux/percpu-refcount.h:222 [inline]
obj_cgroup_get include/linux/memcontrol.h:798 [inline]
refill_obj_stock+0x1f9/0x680 mm/memcontrol.c:3342
memcg_slab_free_hook+0x125/0x1f0 mm/slab.h:576
slab_free mm/slub.c:3811 [inline]
kmem_cache_free+0xe1/0x280 mm/slub.c:3838
anon_vma_chain_free mm/rmap.c:147 [inline]
unlink_anon_vmas+0x612/0x660 mm/rmap.c:448
free_pgtables+0x258/0x770 mm/memory.c:383
exit_mmap+0x3e8/0xb50 mm/mmap.c:3313
__mmput+0x118/0x3c0 kernel/fork.c:1355
exit_mm+0x1da/0x2c0 kernel/exit.c:569
do_exit+0x88e/0x23c0 kernel/exit.c:870
do_group_exit+0x21b/0x2d0 kernel/exit.c:1024
__do_sys_exit_group kernel/exit.c:1035 [inline]
__se_sys_exit_group kernel/exit.c:1033 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1033
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fafba4f16c5
Code: Unable to access opcode bytes at 0x7fafba4f169b.
RSP: 002b:00007ffc70d57048 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fafba5f2fe8 RCX: 00007fafba4f16c5
RDX: 00000000000000e7 RSI: fffffffffffffe60 RDI: 0000000000000000
RBP: 0000000000000001 R08: 00007ffc70d56fe0 R09: 0000000000000000
R10: 00007ffc70d56e90 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fafba5f1680 R15: 00007fafba5f3000
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__ref_is_percpu include/linux/percpu-refcount.h:174 [inline]
RIP: 0010:percpu_ref_get_many+0x8d/0x140 include/linux/percpu-refcount.h:204
Code: 01 48 c7 c7 e0 b7 b6 8a be 14 03 00 00 48 c7 c2 20 b8 b6 8a e8 a4 18 83 ff 49 bc 00 00 00 00 00 fc ff df 4c 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 ff e8 04 3b f8 ff 49 8b 07 a8 03 75 62
RSP: 0018:ffffc9000477f7d8 EFLAGS: 00010006
RAX: 000000001fffe000 RBX: ffffffff81e49a59 RCX: 7d4b003fb5639100
RDX: 0000000000000000 RSI: ffffffff8afc7020 RDI: ffffffff8afc6fe0
RBP: ffffc9000477f8f8 R08: dffffc0000000000 R09: 1ffffffff21b4aa0
R10: dffffc0000000000 R11: fffffbfff21b4aa1 R12: dffffc0000000000
R13: 1ffff110171c6ff6 R14: 0000000000000001 R15: 00000000ffff0000
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fafbac3be9c CR3: 00000000664dd000 CR4: 00000000003506f0
DR0: fffffffffffffff1 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 48 c7 c7 e0 b7 b6 8a mov $0xffffffff8ab6b7e0,%rdi
7: be 14 03 00 00 mov $0x314,%esi
c: 48 c7 c2 20 b8 b6 8a mov $0xffffffff8ab6b820,%rdx
13: e8 a4 18 83 ff call 0xff8318bc
18: 49 bc 00 00 00 00 00 movabs $0xdffffc0000000000,%r12
1f: fc ff df
22: 4c 89 f8 mov %r15,%rax
25: 48 c1 e8 03 shr $0x3,%rax
* 29: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction
2e: 74 08 je 0x38
30: 4c 89 ff mov %r15,%rdi
33: e8 04 3b f8 ff call 0xfff83b3c
38: 49 8b 07 mov (%r15),%rax
3b: a8 03 test $0x3,%al
3d: 75 62 jne 0xa1