BUG: unable to handle page fault for address: ffffffff818d64ea #PF: supervisor write access in kernel mode #PF: error_code(0x0003) - permissions violation PGD 5e11067 P4D 5e11067 PUD 5e12063 PMD 18001e1 Oops: 0003 [#1] PREEMPT SMP KASAN CPU: 0 PID: 3185 Comm: syz.7.768 Not tainted 5.4.290-syzkaller-00017-g6b07fcd94a6a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 RIP: 0010:__hlist_del include/linux/list.h:791 [inline] RIP: 0010:detach_timer kernel/time/timer.c:824 [inline] RIP: 0010:expire_timers kernel/time/timer.c:1482 [inline] RIP: 0010:__run_timers+0x7be/0xbe0 kernel/time/timer.c:1817 Code: 74 2e e8 a5 66 0f 00 49 83 c5 08 4c 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 ef e8 32 51 3f 00 <4d> 89 65 00 eb 05 e8 77 66 0f 00 49 bd 00 00 00 00 00 fc ff df 42 RSP: 0018:ffff8881f6e09d60 EFLAGS: 00010046 RAX: 1ffffffff031ac9d RBX: 1ffff1103d750e39 RCX: dffffc0000000000 RDX: 0000000000000101 RSI: 0000000000000004 RDI: ffff8881f6e09ce0 RBP: ffff8881f6e09ec8 R08: dffffc0000000000 R09: 0000000000000003 R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff8881f6e09e28 R13: ffffffff818d64ea R14: 1ffff1103d750e38 R15: ffff8881eba871c8 FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffff818d64ea CR3: 0000000005e0e000 CR4: 00000000003406b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1830 __do_softirq+0x23b/0x6b7 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x195/0x1c0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:539 [inline] smp_apic_timer_interrupt+0x11a/0x490 arch/x86/kernel/apic/apic.c:1161 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:834 RIP: 0010:in_task_stack+0x29/0x40 arch/x86/kernel/dumpstack.c:43 Code: 90 48 8b 4e 18 48 8d b1 00 80 00 00 48 39 f9 41 0f 96 c0 48 39 fe 0f 97 c0 44 20 c0 3c 01 75 16 c7 02 01 00 00 00 48 89 4a 08 <48> 89 72 10 48 c7 42 18 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 RSP: 0018:ffff8881d26f7188 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 1ffff1103a4dee01 RBX: ffff8881e411ee40 RCX: ffff8881d26f0000 RDX: ffff8881d26f72c0 RSI: ffff8881d26f8000 RDI: ffff8881d26f71c0 RBP: ffff8881d26f72b0 R08: dffffc0000000001 R09: ffff8881d26f72c0 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8881d26f72e0 R13: ffff8881d26f71c0 R14: ffff8881d26f72e0 R15: ffff8881d26f72c0 get_stack_info+0x35/0x200 arch/x86/kernel/dumpstack_64.c:161 __unwind_start+0x583/0x890 arch/x86/kernel/unwind_orc.c:660 unwind_start arch/x86/include/asm/unwind.h:60 [inline] arch_stack_walk+0xdd/0x140 arch/x86/kernel/stacktrace.c:24 stack_trace_save+0x118/0x1c0 kernel/stacktrace.c:123 save_stack+0x95/0x880 mm/page_owner.c:122 __reset_page_owner+0x1f/0x100 mm/page_owner.c:149 reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1176 [inline] free_pcp_prepare mm/page_alloc.c:1233 [inline] free_unref_page_prepare+0x297/0x380 mm/page_alloc.c:3085 free_unref_page_list+0x10a/0x590 mm/page_alloc.c:3154 release_pages+0xad8/0xb20 mm/swap.c:842 tlb_batch_pages_flush mm/mmu_gather.c:49 [inline] tlb_flush_mmu_free mm/mmu_gather.c:189 [inline] tlb_flush_mmu+0xc8/0x170 mm/mmu_gather.c:196 zap_pte_range mm/memory.c:1173 [inline] zap_pmd_range mm/memory.c:1222 [inline] zap_pud_range mm/memory.c:1251 [inline] zap_p4d_range mm/memory.c:1272 [inline] unmap_page_range+0x1d29/0x2620 mm/memory.c:1293 unmap_single_vma mm/memory.c:1338 [inline] unmap_vmas+0x355/0x4b0 mm/memory.c:1370 exit_mmap+0x2bc/0x520 mm/mmap.c:3191 __mmput+0x8e/0x2c0 kernel/fork.c:1101 exit_mm kernel/exit.c:538 [inline] do_exit+0xc08/0x2bc0 kernel/exit.c:848 do_group_exit+0x138/0x300 kernel/exit.c:984 __do_sys_exit_group kernel/exit.c:995 [inline] __se_sys_exit_group kernel/exit.c:993 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:993 do_syscall_64+0xca/0x1c0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x5c/0xc1 RIP: 0033:0x7f03ab9f0169 Code: Bad RIP value. RSP: 002b:00007fffac507f38 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f03ab9f0169 RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fffac507f9c R08: 0000001eac50802f R09: 00000000000927c0 R10: 0000000000000244 R11: 0000000000000246 R12: 0000000000000002 R13: 00000000000927c0 R14: 00000000000128f4 R15: 00007fffac507ff0 Modules linked in: CR2: ffffffff818d64ea ---[ end trace 80f425128319bbdc ]--- RIP: 0010:__hlist_del include/linux/list.h:791 [inline] RIP: 0010:detach_timer kernel/time/timer.c:824 [inline] RIP: 0010:expire_timers kernel/time/timer.c:1482 [inline] RIP: 0010:__run_timers+0x7be/0xbe0 kernel/time/timer.c:1817 Code: 74 2e e8 a5 66 0f 00 49 83 c5 08 4c 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 ef e8 32 51 3f 00 <4d> 89 65 00 eb 05 e8 77 66 0f 00 49 bd 00 00 00 00 00 fc ff df 42 RSP: 0018:ffff8881f6e09d60 EFLAGS: 00010046 RAX: 1ffffffff031ac9d RBX: 1ffff1103d750e39 RCX: dffffc0000000000 RDX: 0000000000000101 RSI: 0000000000000004 RDI: ffff8881f6e09ce0 RBP: ffff8881f6e09ec8 R08: dffffc0000000000 R09: 0000000000000003 R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff8881f6e09e28 R13: ffffffff818d64ea R14: 1ffff1103d750e38 R15: ffff8881eba871c8 FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f03ab9f013f CR3: 0000000005e0e000 CR4: 00000000003406b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 ---------------- Code disassembly (best guess): 0: 74 2e je 0x30 2: e8 a5 66 0f 00 call 0xf66ac 7: 49 83 c5 08 add $0x8,%r13 b: 4c 89 e8 mov %r13,%rax e: 48 c1 e8 03 shr $0x3,%rax 12: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 19: fc ff df 1c: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) 20: 74 08 je 0x2a 22: 4c 89 ef mov %r13,%rdi 25: e8 32 51 3f 00 call 0x3f515c * 2a: 4d 89 65 00 mov %r12,0x0(%r13) <-- trapping instruction 2e: eb 05 jmp 0x35 30: e8 77 66 0f 00 call 0xf66ac 35: 49 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%r13 3c: fc ff df 3f: 42 rex.X