Oops: general protection fault, probably for non-canonical address 0xffff1100e1fe5c00: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: maybe wild-memory-access in range [0xfff8a8070ff2e000-0xfff8a8070ff2e007] CPU: 0 UID: 0 PID: 14859 Comm: rm Not tainted 6.14.0-rc6-syzkaller-00022-gb7f94fcf5546 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:percpu_ref_get_many include/linux/percpu-refcount.h:205 [inline] RIP: 0010:percpu_ref_get include/linux/percpu-refcount.h:222 [inline] RIP: 0010:obj_cgroup_get include/linux/memcontrol.h:764 [inline] RIP: 0010:refill_obj_stock+0x14e/0x610 mm/memcontrol.c:2870 Code: 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 3d 04 00 00 48 8b 45 00 a8 03 0f 85 79 02 00 00 <65> 48 ff 00 e8 d9 62 ff ff 4c 89 fa 48 b8 00 00 00 00 00 fc ff df RSP: 0018:ffffc900040df920 EFLAGS: 00010046 RAX: ffff8880299e5c00 RBX: 0000000000039ac0 RCX: ffffffff822450b8 RDX: 1ffffffff3582768 RSI: ffffffff8bd35960 RDI: ffffffff8dab0ce0 RBP: ffffffff9ac13b40 R08: 0000000000000000 R09: fffffbfff2dd8598 R10: ffffffff96ec2cc7 R11: 0000000000000002 R12: 0000000000000078 R13: ffff8880b8639ac0 R14: ffff88802f93b300 R15: ffff8880b8639b00 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f629b63d440 CR3: 00000000250fa000 CR4: 0000000000350ef0 Call Trace: obj_cgroup_uncharge mm/memcontrol.c:2936 [inline] __memcg_slab_free_hook+0x229/0x5a0 mm/memcontrol.c:3023 memcg_slab_free_hook mm/slub.c:2178 [inline] slab_free mm/slub.c:4606 [inline] kmem_cache_free+0x443/0x4d0 mm/slub.c:4711 anon_vma_chain_free mm/rmap.c:147 [inline] unlink_anon_vmas+0x458/0x820 mm/rmap.c:447 free_pgtables+0x12c/0x950 mm/memory.c:387 exit_mmap+0x406/0xba0 mm/mmap.c:1295 __mmput+0x12a/0x410 kernel/fork.c:1356 mmput+0x62/0x70 kernel/fork.c:1378 exit_mm kernel/exit.c:570 [inline] do_exit+0x9ba/0x2d70 kernel/exit.c:925 do_group_exit+0xd3/0x2a0 kernel/exit.c:1087 __do_sys_exit_group kernel/exit.c:1098 [inline] __se_sys_exit_group kernel/exit.c:1096 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1096 x64_sys_call+0x151f/0x1720 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f629b6fba90 Code: Unable to access opcode bytes at 0x7f629b6fba66. RSP: 002b:00007ffe225590a8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007f629b7ec860 RCX: 00007f629b6fba90 RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00007f629b7ec860 R08: 00007ffe22558f20 R09: 00007ffe22559000 R10: 00007ffe22558f60 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f629b7f0658 R15: 0000000000000001 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:percpu_ref_get_many include/linux/percpu-refcount.h:205 [inline] RIP: 0010:percpu_ref_get include/linux/percpu-refcount.h:222 [inline] RIP: 0010:obj_cgroup_get include/linux/memcontrol.h:764 [inline] RIP: 0010:refill_obj_stock+0x14e/0x610 mm/memcontrol.c:2870 Code: 02 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 3d 04 00 00 48 8b 45 00 a8 03 0f 85 79 02 00 00 <65> 48 ff 00 e8 d9 62 ff ff 4c 89 fa 48 b8 00 00 00 00 00 fc ff df RSP: 0018:ffffc900040df920 EFLAGS: 00010046 RAX: ffff8880299e5c00 RBX: 0000000000039ac0 RCX: ffffffff822450b8 RDX: 1ffffffff3582768 RSI: ffffffff8bd35960 RDI: ffffffff8dab0ce0 RBP: ffffffff9ac13b40 R08: 0000000000000000 R09: fffffbfff2dd8598 R10: ffffffff96ec2cc7 R11: 0000000000000002 R12: 0000000000000078 R13: ffff8880b8639ac0 R14: ffff88802f93b300 R15: ffff8880b8639b00 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f629b63d440 CR3: 00000000250fa000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 00 00 add %al,(%rax) 2: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 9: fc ff df c: 48 89 ea mov %rbp,%rdx f: 48 c1 ea 03 shr $0x3,%rdx 13: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 17: 0f 85 3d 04 00 00 jne 0x45a 1d: 48 8b 45 00 mov 0x0(%rbp),%rax 21: a8 03 test $0x3,%al 23: 0f 85 79 02 00 00 jne 0x2a2 * 29: 65 48 ff 00 incq %gs:(%rax) <-- trapping instruction 2d: e8 d9 62 ff ff call 0xffff630b 32: 4c 89 fa mov %r15,%rdx 35: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 3c: fc ff df