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: 9510 Comm: syz.7.322 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:208 [inline] RIP: 0010:jfs_flush_journal+0x7f8/0xed0 fs/jfs/jfs_logmgr.c:1572 Code: a0 b8 fe 4d 8d 77 f0 4c 89 f0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 06 85 e2 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 ea 84 e2 fe 49 8b 3c 24 e8 11 a0 b8 RSP: 0018:ffffc90004f8f980 EFLAGS: 00010206 RAX: 0000000000000006 RBX: dffffc0000000000 RCX: 0000000000080000 RDX: ffffc9002228c000 RSI: 0000000000002bb8 RDI: 0000000000002bb9 RBP: ffffc90004f8fac0 R08: 0000000000000000 R09: 0000000000000000 R10: ffffc90004f8f768 R11: fffff520009f1f1a R12: 0000000000000030 R13: ffff88805e14aa18 R14: ffff88805c52da28 R15: ffff88805c52da38 FS: 00007f701487e6c0(0000) GS:ffff888126d85000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fac487f4eb8 CR3: 000000005b86a000 CR4: 00000000003526f0 Call Trace: jfs_umount+0x178/0x3c0 fs/jfs/jfs_umount.c:58 jfs_fill_super+0x9c5/0xd80 fs/jfs/super.c:567 get_tree_bdev_flags+0x40e/0x4d0 fs/super.c:1699 vfs_get_tree+0x92/0x2a0 fs/super.c:1759 fc_mount fs/namespace.c:1199 [inline] do_new_mount_fc fs/namespace.c:3636 [inline] do_new_mount+0x302/0xa10 fs/namespace.c:3712 do_mount fs/namespace.c:4035 [inline] __do_sys_mount fs/namespace.c:4224 [inline] __se_sys_mount+0x313/0x410 fs/namespace.c:4201 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7016620eea 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:00007f701487de68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f701487def0 RCX: 00007f7016620eea RDX: 0000200000000100 RSI: 00002000000000c0 RDI: 00007f701487deb0 RBP: 0000200000000100 R08: 00007f701487def0 R09: 0000000001010006 R10: 0000000001010006 R11: 0000000000000246 R12: 00002000000000c0 R13: 00007f701487deb0 R14: 00000000000061b6 R15: 0000200000001180 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:1572 Code: a0 b8 fe 4d 8d 77 f0 4c 89 f0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 06 85 e2 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 ea 84 e2 fe 49 8b 3c 24 e8 11 a0 b8 RSP: 0018:ffffc90004f8f980 EFLAGS: 00010206 RAX: 0000000000000006 RBX: dffffc0000000000 RCX: 0000000000080000 RDX: ffffc9002228c000 RSI: 0000000000002bb8 RDI: 0000000000002bb9 RBP: ffffc90004f8fac0 R08: 0000000000000000 R09: 0000000000000000 R10: ffffc90004f8f768 R11: fffff520009f1f1a R12: 0000000000000030 R13: ffff88805e14aa18 R14: ffff88805c52da28 R15: ffff88805c52da38 FS: 00007f701487e6c0(0000) GS:ffff888126d85000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fac487f4eb8 CR3: 000000005b86a000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: a0 b8 fe 4d 8d 77 f0 movabs 0x894cf0778d4dfeb8,%al 7: 4c 89 9: f0 48 c1 e8 03 lock 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 06 85 e2 fe call 0xfee28522 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 ea 84 e2 fe call 0xfee28522 38: 49 8b 3c 24 mov (%r12),%rdi 3c: e8 .byte 0xe8 3d: 11 .byte 0x11 3e: a0 .byte 0xa0 3f: b8 .byte 0xb8