general protection fault, probably for non-canonical address 0xdffffc0000000104: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000820-0x0000000000000827] CPU: 1 PID: 16871 Comm: syz.2.2719 Not tainted 5.15.178-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 RIP: 0010:diIAGRead fs/jfs/jfs_imap.c:2665 [inline] RIP: 0010:diRead+0x14e/0xbb0 fs/jfs/jfs_imap.c:316 Code: 8b 75 80 48 89 6c 24 28 4c 8d bd 98 fc ff ff 4c 89 ff be 01 00 00 00 e8 70 35 77 fe 49 8d 9e 20 08 00 00 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 53 88 df fe 4c 8b 2b 49 8d 6d 28 RSP: 0018:ffffc9000347f658 EFLAGS: 00010202 RAX: 0000000000000104 RBX: 0000000000000820 RCX: 0000000000000001 RDX: 0000000000000001 RSI: 0000000000000008 RDI: 0000000000000001 RBP: ffff88805e6f2930 R08: dffffc0000000000 R09: ffffed100bcde4bb R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000004 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88805e6f25c8 FS: 00007fb622d426c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb622d41f98 CR3: 000000004cf30000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: jfs_iget+0x88/0x3b0 fs/jfs/inode.c:35 jfs_lookup+0x222/0x400 fs/jfs/namei.c:1467 lookup_open fs/namei.c:3440 [inline] open_last_lookups fs/namei.c:3532 [inline] path_openat+0x111d/0x2f20 fs/namei.c:3739 do_filp_open+0x21c/0x460 fs/namei.c:3769 do_sys_openat2+0x13b/0x4f0 fs/open.c:1253 do_sys_open fs/open.c:1269 [inline] __do_sys_openat fs/open.c:1285 [inline] __se_sys_openat fs/open.c:1280 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1280 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fb624ef9de9 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:00007fb622d42038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fb625113080 RCX: 00007fb624ef9de9 RDX: 0000000000101042 RSI: 0000400000000040 RDI: ffffffffffffff9c RBP: 00007fb624f7b2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007fb625113080 R15: 00007ffd3b4a3a78 Modules linked in: ---[ end trace b5e9f7aeb2148f22 ]--- RIP: 0010:diIAGRead fs/jfs/jfs_imap.c:2665 [inline] RIP: 0010:diRead+0x14e/0xbb0 fs/jfs/jfs_imap.c:316 Code: 8b 75 80 48 89 6c 24 28 4c 8d bd 98 fc ff ff 4c 89 ff be 01 00 00 00 e8 70 35 77 fe 49 8d 9e 20 08 00 00 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 53 88 df fe 4c 8b 2b 49 8d 6d 28 RSP: 0018:ffffc9000347f658 EFLAGS: 00010202 RAX: 0000000000000104 RBX: 0000000000000820 RCX: 0000000000000001 RDX: 0000000000000001 RSI: 0000000000000008 RDI: 0000000000000001 RBP: ffff88805e6f2930 R08: dffffc0000000000 R09: ffffed100bcde4bb R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000004 R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88805e6f25c8 FS: 00007fb622d426c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb622d20f98 CR3: 000000004cf30000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 8b 75 80 mov -0x80(%rbp),%esi 3: 48 89 6c 24 28 mov %rbp,0x28(%rsp) 8: 4c 8d bd 98 fc ff ff lea -0x368(%rbp),%r15 f: 4c 89 ff mov %r15,%rdi 12: be 01 00 00 00 mov $0x1,%esi 17: e8 70 35 77 fe call 0xfe77358c 1c: 49 8d 9e 20 08 00 00 lea 0x820(%r14),%rbx 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 df mov %rbx,%rdi 34: e8 53 88 df fe call 0xfedf888c 39: 4c 8b 2b mov (%rbx),%r13 3c: 49 8d 6d 28 lea 0x28(%r13),%rbp