divide error: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 326 Comm: kworker/0:3 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: events damon_reclaim_timer_fn RIP: 0010:damon_reclaim_new_scheme mm/damon/reclaim.c:281 [inline] RIP: 0010:damon_reclaim_turn mm/damon/reclaim.c:323 [inline] RIP: 0010:damon_reclaim_timer_fn+0x33e/0x530 mm/damon/reclaim.c:354 Code: 3a 05 48 89 44 24 78 48 8b 05 de 2f 3a 05 48 89 84 24 80 00 00 00 c7 84 24 90 00 00 00 01 00 00 00 48 8b 05 ac 2f 3a 05 31 d2 <48> f7 35 eb 2f 3a 05 bf 00 10 00 00 48 c7 c6 ff ff ff ff 31 d2 31 RSP: 0018:ffffc90007877800 EFLAGS: 00010246 RAX: 0000000007270e00 RBX: fffff52000f0ef00 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90007877bf8 RBP: ffffc90007877d08 R08: ffffc90007877bf7 R09: ffffc90007877888 R10: dffffc0000000000 R11: fffff52000f0ef7f R12: 0000000000000001 R13: dffffc0000000000 R14: ffff88811d66f080 R15: ffffc90007877870 FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c29b2d6 CR3: 00000001255be000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: process_one_work+0x6c8/0xbb0 kernel/workqueue.c:2328 worker_thread+0xaa0/0x1250 kernel/workqueue.c:2475 kthread+0x3f5/0x4f0 kernel/kthread.c:337 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 Modules linked in: ---[ end trace d39411dc551e8fad ]--- RIP: 0010:damon_reclaim_new_scheme mm/damon/reclaim.c:281 [inline] RIP: 0010:damon_reclaim_turn mm/damon/reclaim.c:323 [inline] RIP: 0010:damon_reclaim_timer_fn+0x33e/0x530 mm/damon/reclaim.c:354 Code: 3a 05 48 89 44 24 78 48 8b 05 de 2f 3a 05 48 89 84 24 80 00 00 00 c7 84 24 90 00 00 00 01 00 00 00 48 8b 05 ac 2f 3a 05 31 d2 <48> f7 35 eb 2f 3a 05 bf 00 10 00 00 48 c7 c6 ff ff ff ff 31 d2 31 RSP: 0018:ffffc90007877800 EFLAGS: 00010246 RAX: 0000000007270e00 RBX: fffff52000f0ef00 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90007877bf8 RBP: ffffc90007877d08 R08: ffffc90007877bf7 R09: ffffc90007877888 R10: dffffc0000000000 R11: fffff52000f0ef7f R12: 0000000000000001 R13: dffffc0000000000 R14: ffff88811d66f080 R15: ffffc90007877870 FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd0dd8be2f8 CR3: 000000011e978000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 3a 05 48 89 44 24 cmp 0x24448948(%rip),%al # 0x2444894e 6: 78 48 js 0x50 8: 8b 05 de 2f 3a 05 mov 0x53a2fde(%rip),%eax # 0x53a2fec e: 48 89 84 24 80 00 00 mov %rax,0x80(%rsp) 15: 00 16: c7 84 24 90 00 00 00 movl $0x1,0x90(%rsp) 1d: 01 00 00 00 21: 48 8b 05 ac 2f 3a 05 mov 0x53a2fac(%rip),%rax # 0x53a2fd4 28: 31 d2 xor %edx,%edx * 2a: 48 f7 35 eb 2f 3a 05 divq 0x53a2feb(%rip) # 0x53a301c <-- trapping instruction 31: bf 00 10 00 00 mov $0x1000,%edi 36: 48 c7 c6 ff ff ff ff mov $0xffffffffffffffff,%rsi 3d: 31 d2 xor %edx,%edx 3f: 31 .byte 0x31