Oops: general protection fault, probably for non-canonical address 0xe7ffed1c349f3704: 0000 [#1] SMP KASAN PTI KASAN: maybe wild-memory-access in range [0x3fff88e1a4f9b820-0x3fff88e1a4f9b827] CPU: 1 UID: 0 PID: 7064 Comm: syz.6.104 Not tainted 6.15.0-rc4-syzkaller-00052-g4f79eaa2ceac #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 RIP: 0010:cgroup_rstat_push_children kernel/cgroup/rstat.c:165 [inline] RIP: 0010:cgroup_rstat_updated_list kernel/cgroup/rstat.c:245 [inline] RIP: 0010:cgroup_rstat_flush+0x840/0x1e70 kernel/cgroup/rstat.c:325 Code: 70 74 08 48 89 df e8 5f e7 66 00 4c 8b 23 4b 8d 1c 3c 48 81 c3 a0 00 00 00 49 89 dd 49 c1 ed 03 48 b8 00 00 00 00 00 fc ff df <41> 80 7c 05 00 00 74 08 48 89 df e8 30 e7 66 00 48 8b 03 48 3b 44 RSP: 0018:ffffc90004c3f480 EFLAGS: 00010003 RAX: dffffc0000000000 RBX: 3fff88e1a4f9b824 RCX: 1ffffffff1b2b183 RDX: ffffc9000c5ba000 RSI: 000000000004745b RDI: ffff88807b3ec5c1 RBP: ffffc90004c3f670 R08: ffffffff8f7daa77 R09: 1ffffffff1efb54e R10: dffffc0000000000 R11: fffffbfff1efb54f R12: ffff888126200000 R13: 07fff11c349f3704 R14: 0000000000000000 R15: 400000607ed9b784 FS: 00007f599fa046c0(0000) GS:ffff888126200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7200254270 CR3: 000000005b828000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: zswap_shrinker_count+0x21b/0x530 mm/zswap.c:1305 do_shrink_slab+0x8e/0x1110 mm/shrinker.c:384 shrink_slab+0xd74/0x10d0 mm/shrinker.c:664 drop_slab_node mm/vmscan.c:436 [inline] drop_slab+0x14e/0x290 mm/vmscan.c:454 drop_caches_sysctl_handler+0xc7/0x170 fs/drop_caches.c:68 proc_sys_call_handler+0x509/0x7c0 fs/proc/proc_sysctl.c:601 do_iter_readv_writev+0x56b/0x7f0 fs/read_write.c:-1 vfs_writev+0x306/0x9a0 fs/read_write.c:1055 do_writev+0x14d/0x2d0 fs/read_write.c:1101 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f599eb8e969 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f599fa04038 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 00007f599edb5fa0 RCX: 00007f599eb8e969 RDX: 0000000000000001 RSI: 00002000000000c0 RDI: 0000000000000005 RBP: 00007f599ec10ab1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f599edb5fa0 R15: 00007ffe09701ab8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:cgroup_rstat_push_children kernel/cgroup/rstat.c:165 [inline] RIP: 0010:cgroup_rstat_updated_list kernel/cgroup/rstat.c:245 [inline] RIP: 0010:cgroup_rstat_flush+0x840/0x1e70 kernel/cgroup/rstat.c:325 Code: 70 74 08 48 89 df e8 5f e7 66 00 4c 8b 23 4b 8d 1c 3c 48 81 c3 a0 00 00 00 49 89 dd 49 c1 ed 03 48 b8 00 00 00 00 00 fc ff df <41> 80 7c 05 00 00 74 08 48 89 df e8 30 e7 66 00 48 8b 03 48 3b 44 RSP: 0018:ffffc90004c3f480 EFLAGS: 00010003 RAX: dffffc0000000000 RBX: 3fff88e1a4f9b824 RCX: 1ffffffff1b2b183 RDX: ffffc9000c5ba000 RSI: 000000000004745b RDI: ffff88807b3ec5c1 RBP: ffffc90004c3f670 R08: ffffffff8f7daa77 R09: 1ffffffff1efb54e R10: dffffc0000000000 R11: fffffbfff1efb54f R12: ffff888126200000 R13: 07fff11c349f3704 R14: 0000000000000000 R15: 400000607ed9b784 FS: 00007f599fa046c0(0000) GS:ffff888126200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7200254270 CR3: 000000005b828000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 70 74 jo 0x76 2: 08 48 89 or %cl,-0x77(%rax) 5: df e8 fucomip %st(0),%st 7: 5f pop %rdi 8: e7 66 out %eax,$0x66 a: 00 4c 8b 23 add %cl,0x23(%rbx,%rcx,4) e: 4b 8d 1c 3c lea (%r12,%r15,1),%rbx 12: 48 81 c3 a0 00 00 00 add $0xa0,%rbx 19: 49 89 dd mov %rbx,%r13 1c: 49 c1 ed 03 shr $0x3,%r13 20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 27: fc ff df * 2a: 41 80 7c 05 00 00 cmpb $0x0,0x0(%r13,%rax,1) <-- trapping instruction 30: 74 08 je 0x3a 32: 48 89 df mov %rbx,%rdi 35: e8 30 e7 66 00 call 0x66e76a 3a: 48 8b 03 mov (%rbx),%rax 3d: 48 rex.W 3e: 3b .byte 0x3b 3f: 44 rex.R