RDX: 000000000000ff39 RSI: 00002000000082e0 RDI: 0000000000000008 RBP: 00007f594acdab08 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f594ae4efa0 R15: 00007fff488d0c18 ---[ end trace b083a9f7dd7d5e98 ]--- BUG: unable to handle page fault for address: ffffed112476ffff #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 23fff2067 P4D 23fff2067 PUD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 6669 Comm: syz.3.1516 Tainted: G W 5.10.233-syzkaller-00881-gfbe98d68b6b3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:z_erofs_decompress_pcluster fs/erofs/zdata.c:1043 [inline] RIP: 0010:z_erofs_decompress_queue+0x863/0x1d20 fs/erofs/zdata.c:1188 Code: c0 0f 85 db 01 00 00 41 8b 04 24 c1 f8 02 89 c0 48 8b 4c 24 70 4c 8d 3c c1 4d 89 fc 49 c1 ec 03 48 b8 00 00 00 00 00 fc ff df <41> 80 3c 04 00 74 08 4c 89 ff e8 4e f4 7e ff 4d 8b 37 4d 85 f6 0f RSP: 0018:ffffc90000af7060 EFLAGS: 00010a06 RAX: dffffc0000000000 RBX: ffffea0004d41ac0 RCX: ffff888123b80000 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffea0004d41ae8 RBP: ffffc90000af75d0 R08: dffffc0000000000 R09: fffff940009a835e R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1112476ffff R13: 0000000000000000 R14: ffffea0004d41ac0 R15: ffff888923b7fff8 FS: 00007f59492d06c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed112476ffff CR3: 000000010ab87000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: z_erofs_runqueue+0x14d1/0x15c0 fs/erofs/zdata.c:1506 z_erofs_readahead+0x9cf/0xd90 fs/erofs/zdata.c:1592 read_pages+0x17e/0xbf0 mm/readahead.c:140 page_cache_ra_unbounded+0x6be/0x890 mm/readahead.c:248 do_page_cache_ra mm/readahead.c:277 [inline] force_page_cache_ra+0x373/0x3e0 mm/readahead.c:308 force_page_cache_readahead mm/internal.h:86 [inline] generic_fadvise+0x539/0x820 mm/fadvise.c:107 vfs_fadvise mm/fadvise.c:186 [inline] ksys_fadvise64_64 mm/fadvise.c:200 [inline] __do_sys_fadvise64 mm/fadvise.c:215 [inline] __se_sys_fadvise64 mm/fadvise.c:213 [inline] __x64_sys_fadvise64+0x13f/0x180 mm/fadvise.c:213 do_syscall_64+0x34/0x70 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f594ac5ed29 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f59492d0038 EFLAGS: 00000246 ORIG_RAX: 00000000000000dd RAX: ffffffffffffffda RBX: 00007f594ae4efa0 RCX: 00007f594ac5ed29 RDX: 000000000000ff39 RSI: 00002000000082e0 RDI: 0000000000000008 RBP: 00007f594acdab08 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f594ae4efa0 R15: 00007fff488d0c18 Modules linked in: CR2: ffffed112476ffff ---[ end trace b083a9f7dd7d5e99 ]--- RIP: 0010:z_erofs_decompress_pcluster fs/erofs/zdata.c:1043 [inline] RIP: 0010:z_erofs_decompress_queue+0x863/0x1d20 fs/erofs/zdata.c:1188 Code: c0 0f 85 db 01 00 00 41 8b 04 24 c1 f8 02 89 c0 48 8b 4c 24 70 4c 8d 3c c1 4d 89 fc 49 c1 ec 03 48 b8 00 00 00 00 00 fc ff df <41> 80 3c 04 00 74 08 4c 89 ff e8 4e f4 7e ff 4d 8b 37 4d 85 f6 0f RSP: 0018:ffffc90000af7060 EFLAGS: 00010a06 RAX: dffffc0000000000 RBX: ffffea0004d41ac0 RCX: ffff888123b80000 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffea0004d41ae8 RBP: ffffc90000af75d0 R08: dffffc0000000000 R09: fffff940009a835e R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff1112476ffff R13: 0000000000000000 R14: ffffea0004d41ac0 R15: ffff888923b7fff8 FS: 00007f59492d06c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed112476ffff CR3: 000000010ab87000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: c0 0f 85 rorb $0x85,(%rdi) 3: db 01 fildl (%rcx) 5: 00 00 add %al,(%rax) 7: 41 8b 04 24 mov (%r12),%eax b: c1 f8 02 sar $0x2,%eax e: 89 c0 mov %eax,%eax 10: 48 8b 4c 24 70 mov 0x70(%rsp),%rcx 15: 4c 8d 3c c1 lea (%rcx,%rax,8),%r15 19: 4d 89 fc mov %r15,%r12 1c: 49 c1 ec 03 shr $0x3,%r12 20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 27: fc ff df * 2a: 41 80 3c 04 00 cmpb $0x0,(%r12,%rax,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 4c 89 ff mov %r15,%rdi 34: e8 4e f4 7e ff call 0xff7ef487 39: 4d 8b 37 mov (%r15),%r14 3c: 4d 85 f6 test %r14,%r14 3f: 0f .byte 0xf