------------[ cut here ]------------ kernel BUG at mm/memory.c:2163! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 28152 Comm: syz-executor.4 Not tainted 6.3.0-rc6-syzkaller-00046-gde4664485abb #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 RIP: 0010:vmf_insert_pfn_prot+0x24c/0x460 mm/memory.c:2163 Code: 0f 0b e8 d7 57 c2 ff 4d 89 f7 bf 20 00 00 00 41 83 e7 28 4c 89 fe e8 33 54 c2 ff 49 83 ff 20 0f 85 a5 fe ff ff e8 b4 57 c2 ff <0f> 0b 49 be ff ff ff ff ff ff 0f 00 e8 a3 57 c2 ff 4d 21 ee 4c 89 RSP: 0018:ffffc900036cf6f0 EFLAGS: 00010246 RAX: 0000000000040000 RBX: 1ffff920006d9ee0 RCX: ffffc9000c89f000 RDX: 0000000000040000 RSI: ffffffff81c083ac RDI: 0000000000000007 RBP: ffff88809bedb620 R08: 0000000000000007 R09: 0000000000000020 R10: 0000000000000020 R11: 0000000000000005 R12: 0000000020ffc000 R13: 0000000000095c30 R14: 000000000c140477 R15: 0000000000000020 FS: 00007fb773b53700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020ffc000 CR3: 00000000a09a1000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000001208 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: drm_gem_shmem_fault+0x1e1/0x290 drivers/gpu/drm/drm_gem_shmem_helper.c:559 __do_fault+0x107/0x600 mm/memory.c:4155 do_read_fault mm/memory.c:4506 [inline] do_fault mm/memory.c:4635 [inline] handle_pte_fault mm/memory.c:4923 [inline] __handle_mm_fault+0x24f3/0x3e60 mm/memory.c:5065 handle_mm_fault+0x2ba/0x9c0 mm/memory.c:5211 do_user_addr_fault+0x475/0x1230 arch/x86/mm/fault.c:1407 handle_page_fault arch/x86/mm/fault.c:1498 [inline] exc_page_fault+0x98/0x170 arch/x86/mm/fault.c:1554 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0010:fault_in_readable+0x179/0x290 mm/gup.c:1863 Code: 36 c5 ff 49 39 dd 0f 84 06 01 00 00 45 31 f6 eb 11 e8 fb 35 c5 ff 48 81 c3 00 10 00 00 4c 39 eb 74 1d e8 ea 35 c5 ff 45 89 f7 <8a> 03 31 ff 44 89 fe 88 44 24 28 e8 27 32 c5 ff 45 85 ff 74 d2 e8 RSP: 0018:ffffc900036cfb10 EFLAGS: 00050246 RAX: 0000000000040000 RBX: 0000000020ffc000 RCX: ffffc9000c89f000 RDX: 0000000000040000 RSI: ffffffff81bda576 RDI: 0000000000000005 RBP: 0000000020ffb040 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000001000 R13: 0000000020ffd000 R14: 0000000000000000 R15: 0000000000000000 fault_in_iov_iter_readable+0x252/0x2c0 lib/iov_iter.c:350 generic_perform_write+0x1ae/0x570 mm/filemap.c:3916 __generic_file_write_iter+0x2ae/0x500 mm/filemap.c:4054 generic_file_write_iter+0xe3/0x350 mm/filemap.c:4086 call_write_iter include/linux/fs.h:1851 [inline] new_sync_write fs/read_write.c:491 [inline] vfs_write+0x9ed/0xe10 fs/read_write.c:584 ksys_write+0x12b/0x250 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fb772e8c169 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb773b53168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007fb772fabf80 RCX: 00007fb772e8c169 RDX: 000000000208e24b RSI: 0000000020000040 RDI: 0000000000000004 RBP: 00007fb772ee7ca1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fb7730cfb1f R14: 00007fb773b53300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:vmf_insert_pfn_prot+0x24c/0x460 mm/memory.c:2163 Code: 0f 0b e8 d7 57 c2 ff 4d 89 f7 bf 20 00 00 00 41 83 e7 28 4c 89 fe e8 33 54 c2 ff 49 83 ff 20 0f 85 a5 fe ff ff e8 b4 57 c2 ff <0f> 0b 49 be ff ff ff ff ff ff 0f 00 e8 a3 57 c2 ff 4d 21 ee 4c 89 RSP: 0018:ffffc900036cf6f0 EFLAGS: 00010246 RAX: 0000000000040000 RBX: 1ffff920006d9ee0 RCX: ffffc9000c89f000 RDX: 0000000000040000 RSI: ffffffff81c083ac RDI: 0000000000000007 RBP: ffff88809bedb620 R08: 0000000000000007 R09: 0000000000000020 R10: 0000000000000020 R11: 0000000000000005 R12: 0000000020ffc000 R13: 0000000000095c30 R14: 000000000c140477 R15: 0000000000000020 FS: 00007fb773b53700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b3262d000 CR3: 00000000a09a1000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000001208 DR6: 00000000ffff0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 36 c5 ff 49 ss (bad) 4: 39 dd cmp %ebx,%ebp 6: 0f 84 06 01 00 00 je 0x112 c: 45 31 f6 xor %r14d,%r14d f: eb 11 jmp 0x22 11: e8 fb 35 c5 ff callq 0xffc53611 16: 48 81 c3 00 10 00 00 add $0x1000,%rbx 1d: 4c 39 eb cmp %r13,%rbx 20: 74 1d je 0x3f 22: e8 ea 35 c5 ff callq 0xffc53611 27: 45 89 f7 mov %r14d,%r15d * 2a: 8a 03 mov (%rbx),%al <-- trapping instruction 2c: 31 ff xor %edi,%edi 2e: 44 89 fe mov %r15d,%esi 31: 88 44 24 28 mov %al,0x28(%rsp) 35: e8 27 32 c5 ff callq 0xffc53261 3a: 45 85 ff test %r15d,%r15d 3d: 74 d2 je 0x11 3f: e8 .byte 0xe8