read_mapping_page failed! diRead: diIAGRead returned -5 Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] CPU: 0 UID: 0 PID: 8298 Comm: syz.7.285 Not tainted 6.16.0-rc4-syzkaller-00013-g66701750d556 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline] RIP: 0010:jfs_flush_journal+0x7f8/0xed0 fs/jfs/jfs_logmgr.c:1573 Code: 83 b8 fe 4d 8d 77 f0 4c 89 f0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 c6 1c e3 fe 4d 8b 26 49 83 c4 30 4c 89 e0 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 e7 e8 aa 1c e3 fe 49 8b 3c 24 e8 a1 83 b8 RSP: 0018:ffffc9000ab27a60 EFLAGS: 00010206 RAX: 0000000000000006 RBX: dffffc0000000000 RCX: 0000000000080000 RDX: ffffc9000bbfa000 RSI: 0000000000005098 RDI: 0000000000005099 RBP: ffffc9000ab27ba0 R08: ffffc9000ab279bf R09: 0000000000000000 R10: ffffc9000ab27848 R11: fffff52001564f38 R12: 0000000000000030 R13: ffff88807e0959a8 R14: ffff88802172f028 R15: ffff88802172f038 FS: 00007f03b007f6c0(0000) GS:ffff888125c84000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6aa9b4de9c CR3: 0000000078fa0000 CR4: 00000000003526f0 Call Trace: jfs_umount+0x178/0x3c0 fs/jfs/jfs_umount.c:58 jfs_fill_super+0x9da/0xd90 fs/jfs/super.c:567 get_tree_bdev_flags+0x40b/0x4d0 fs/super.c:1681 vfs_get_tree+0x8f/0x2b0 fs/super.c:1804 do_new_mount+0x24a/0xa40 fs/namespace.c:3902 do_mount fs/namespace.c:4239 [inline] __do_sys_mount fs/namespace.c:4450 [inline] __se_sys_mount+0x317/0x410 fs/namespace.c:4427 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f03af1900ca Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007f03b007ee68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f03b007eef0 RCX: 00007f03af1900ca RDX: 0000200000000040 RSI: 0000200000000080 RDI: 00007f03b007eeb0 RBP: 0000200000000040 R08: 00007f03b007eef0 R09: 0000000000210004 R10: 0000000000210004 R11: 0000000000000246 R12: 0000200000000080 R13: 00007f03b007eeb0 R14: 00000000000062b5 R15: 00002000000002c0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline] RIP: 0010:jfs_flush_journal+0x7f8/0xed0 fs/jfs/jfs_logmgr.c:1573 Code: 83 b8 fe 4d 8d 77 f0 4c 89 f0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 c6 1c e3 fe 4d 8b 26 49 83 c4 30 4c 89 e0 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 e7 e8 aa 1c e3 fe 49 8b 3c 24 e8 a1 83 b8 RSP: 0018:ffffc9000ab27a60 EFLAGS: 00010206 RAX: 0000000000000006 RBX: dffffc0000000000 RCX: 0000000000080000 RDX: ffffc9000bbfa000 RSI: 0000000000005098 RDI: 0000000000005099 RBP: ffffc9000ab27ba0 R08: ffffc9000ab279bf R09: 0000000000000000 R10: ffffc9000ab27848 R11: fffff52001564f38 R12: 0000000000000030 R13: ffff88807e0959a8 R14: ffff88802172f028 R15: ffff88802172f038 FS: 00007f03b007f6c0(0000) GS:ffff888125c84000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000001e000 CR3: 0000000078fa0000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: 83 b8 fe 4d 8d 77 f0 cmpl $0xfffffff0,0x778d4dfe(%rax) 7: 4c 89 f0 mov %r14,%rax a: 48 c1 e8 03 shr $0x3,%rax e: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1) 12: 74 08 je 0x1c 14: 4c 89 f7 mov %r14,%rdi 17: e8 c6 1c e3 fe call 0xfee31ce2 1c: 4d 8b 26 mov (%r14),%r12 1f: 49 83 c4 30 add $0x30,%r12 23: 4c 89 e0 mov %r12,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1) <-- trapping instruction 2e: 74 08 je 0x38 30: 4c 89 e7 mov %r12,%rdi 33: e8 aa 1c e3 fe call 0xfee31ce2 38: 49 8b 3c 24 mov (%r12),%rdi 3c: e8 .byte 0xe8 3d: a1 .byte 0xa1 3e: 83 .byte 0x83 3f: b8 .byte 0xb8