BUG: unable to handle page fault for address: ffffffff81adb754 #PF: supervisor write access in kernel mode #PF: error_code(0x0003) - permissions violation PGD 5e11067 P4D 5e11067 PUD 5e12063 PMD 1a001e1 Oops: 0003 [#1] PREEMPT SMP KASAN CPU: 0 PID: 1108 Comm: syz.3.208 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: 1ffffffff035b6ea RBX: 1ffff1103bd5be39 RCX: dffffc0000000000 RDX: 0000000000000102 RSI: 0000000000000004 RDI: ffff8881f6e09ce0 RBP: ffff8881f6e09ec8 R08: dffffc0000000000 R09: 0000000000000003 R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff8881f6e09e28 R13: ffffffff81adb754 R14: 1ffff1103bd5be38 R15: ffff8881deadf1c8 FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffff81adb754 CR3: 00000001ef65b000 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:unwind_next_frame+0x4f4/0x1ea0 arch/x86/kernel/unwind_orc.c:451 Code: df 43 0f b6 04 3c 84 c0 0f 85 55 15 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 38 84 c0 4c 8b 74 24 68 0f 85 61 15 00 00 0f b7 02 <89> c3 83 e3 0f 0f 84 c4 00 00 00 8d 43 fe 83 f8 07 0f 87 96 05 00 RSP: 0018:ffff8881e699eb20 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000015 RBX: ffffffff8685fe03 RCX: ffffffff8657e798 RDX: ffffffff8685fe02 RSI: ffffffff8685fdfe RDI: ffffffff812fbdbc RBP: ffff8881e699ee10 R08: 0000000000000001 R09: ffff8881e699ee70 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffffffff0d0bfc0 R13: ffffffff8685fdfe R14: ffff8881e699ee58 R15: dffffc0000000000 arch_stack_walk+0x111/0x140 arch/x86/kernel/stacktrace.c:25 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 __pagevec_release+0xc3/0x150 mm/swap.c:862 pagevec_release include/linux/pagevec.h:88 [inline] shmem_undo_range+0x8a5/0x1ad0 mm/shmem.c:875 shmem_truncate_range mm/shmem.c:997 [inline] shmem_evict_inode+0x218/0x9a0 mm/shmem.c:1097 evict+0x4ea/0x960 fs/inode.c:610 __dentry_kill+0x429/0x630 fs/dcache.c:583 dentry_kill+0xb8/0x280 fs/dcache.c:677 dput+0x3c/0x80 fs/dcache.c:864 __fput+0x443/0x680 fs/file_table.c:294 task_work_run+0x140/0x170 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0xcaf/0x2bc0 kernel/exit.c:861 do_group_exit+0x138/0x300 kernel/exit.c:984 get_signal+0xdb1/0x1440 kernel/signal.c:2738 do_signal+0xb0/0x11f0 arch/x86/kernel/signal.c:809 exit_to_usermode_loop+0xc0/0x1a0 arch/x86/entry/common.c:159 prepare_exit_to_usermode+0x199/0x200 arch/x86/entry/common.c:194 ret_from_intr+0x1c/0x1c RIP: 0033:0x7f0ff6b0a757 Code: 88 15 a2 6f e8 00 88 05 9f 6f e8 00 c3 50 48 8d 35 58 fb 1b 00 48 8d 3d 5e fb 1b 00 31 c0 e8 30 f7 ff ff 53 89 fb 48 83 ec 10 <64> 8b 04 25 94 ff ff ff 85 c0 74 2a 89 fe 31 c0 bf 3c 00 00 00 e8 RSP: 002b:00007f0ff5273120 EFLAGS: 00010202 RAX: 0000000000000000 RBX: 000000000000000b RCX: 00007f0ff6c49169 RDX: 00007f0ff5273140 RSI: 00007f0ff5273270 RDI: 000000000000000b RBP: 00007f0ff6cca2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f0ff6e62080 R15: 00007ffff1244d78 Modules linked in: CR2: ffffffff81adb754 ---[ end trace 6abf412ae84cd9d2 ]--- 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: 1ffffffff035b6ea RBX: 1ffff1103bd5be39 RCX: dffffc0000000000 RDX: 0000000000000102 RSI: 0000000000000004 RDI: ffff8881f6e09ce0 RBP: ffff8881f6e09ec8 R08: dffffc0000000000 R09: 0000000000000003 R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff8881f6e09e28 R13: ffffffff81adb754 R14: 1ffff1103bd5be38 R15: ffff8881deadf1c8 FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffff81adb754 CR3: 00000001ef65b000 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