------------[ cut here ]------------ kernel BUG at mm/vmscan.c:1521! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 27318 Comm: syz-executor.5 Not tainted 5.4.0-rc4+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:shrink_page_list+0x5c15/0x61f0 mm/vmscan.c:1521 Code: d7 16 00 48 89 da e9 29 fe ff ff e8 e5 97 dd ff eb 05 e8 de 97 dd ff 48 8b bd 40 ff ff ff 48 c7 c6 db 5b 39 88 e8 6b 2c 07 00 <0f> 0b e8 c4 97 dd ff 48 89 df 48 c7 c6 54 1d 36 88 e8 55 2c 07 00 RSP: 0018:ffff88821232f780 EFLAGS: 00010286 RAX: 0000000000000021 RBX: 0000000000100000 RCX: 3b3a0d32df660400 RDX: ffffc90010dd4000 RSI: 000000000003e3c6 RDI: 000000000003e3c7 RBP: ffff88821232f970 R08: ffffffff815c8244 R09: ffffed1015d66120 R10: ffffed1015d66120 R11: 0000000000000000 R12: ffff88821232fa18 R13: dffffc0000000000 R14: ffff88821232f8d0 R15: 06fffc000032000c FS: 00007f4702bf5700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000004c6c70 CR3: 000000020b628000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: reclaim_pages+0x78c/0xa20 mm/vmscan.c:2188 madvise_cold_or_pageout_pte_range+0x162c/0x1ef0 mm/madvise.c:453 walk_pmd_range mm/pagewalk.c:53 [inline] walk_pud_range mm/pagewalk.c:112 [inline] walk_p4d_range mm/pagewalk.c:139 [inline] walk_pgd_range mm/pagewalk.c:166 [inline] __walk_page_range+0xd5c/0x1720 mm/pagewalk.c:261 walk_page_range+0x2e7/0x5a0 mm/pagewalk.c:349 madvise_vma mm/madvise.c:506 [inline] __do_sys_madvise mm/madvise.c:1113 [inline] __se_sys_madvise+0x168c/0x24f0 mm/madvise.c:1039 __x64_sys_madvise+0x7b/0x90 mm/madvise.c:1039 do_syscall_64+0xf7/0x1c0 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x459ef9 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f4702bf4c78 EFLAGS: 00000246 ORIG_RAX: 000000000000001c RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459ef9 RDX: 0000000000000015 RSI: 0000000000600003 RDI: 0000000020000000 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4702bf56d4 R13: 00000000004c66e1 R14: 00000000004db820 R15: 00000000ffffffff Modules linked in: ---[ end trace 9701738be0d942e0 ]--- RIP: 0010:shrink_page_list+0x5c15/0x61f0 mm/vmscan.c:1521 Code: d7 16 00 48 89 da e9 29 fe ff ff e8 e5 97 dd ff eb 05 e8 de 97 dd ff 48 8b bd 40 ff ff ff 48 c7 c6 db 5b 39 88 e8 6b 2c 07 00 <0f> 0b e8 c4 97 dd ff 48 89 df 48 c7 c6 54 1d 36 88 e8 55 2c 07 00 RSP: 0018:ffff88821232f780 EFLAGS: 00010286 RAX: 0000000000000021 RBX: 0000000000100000 RCX: 3b3a0d32df660400 RDX: ffffc90010dd4000 RSI: 000000000003e3c6 RDI: 000000000003e3c7 RBP: ffff88821232f970 R08: ffffffff815c8244 R09: ffffed1015d66120 R10: ffffed1015d66120 R11: 0000000000000000 R12: ffff88821232fa18 R13: dffffc0000000000 R14: ffff88821232f8d0 R15: 06fffc000032000c FS: 00007f4702bf5700(0000) GS:ffff8880aea00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020e0107f CR3: 000000020b628000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400