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: 1 UID: 0 PID: 7397 Comm: syz.3.154 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 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: 10 bd fe 4d 8d 77 f0 4c 89 f0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 56 e2 e5 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 3a e2 e5 fe 49 8b 3c 24 e8 c1 10 bd RSP: 0018:ffffc9000481f9c0 EFLAGS: 00010206 RAX: 0000000000000006 RBX: dffffc0000000000 RCX: 0000000000080000 RDX: ffffc9002980f000 RSI: 000000000000334b RDI: 000000000000334c RBP: ffffc9000481fb00 R08: 0000000000000000 R09: 0000000000000000 R10: ffffc9000481f7a8 R11: fffff52000903f22 R12: 0000000000000030 R13: ffff888039fdc218 R14: ffff88802849d428 R15: ffff88802849d438 FS: 00007eff813ae6c0(0000) GS:ffff8881269bc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8ffef99000 CR3: 0000000082eb2000 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+0x40b/0x4d0 fs/super.c:1692 vfs_get_tree+0x8f/0x2b0 fs/super.c:1815 do_new_mount+0x2a2/0x9e0 fs/namespace.c:3808 do_mount fs/namespace.c:4136 [inline] __do_sys_mount fs/namespace.c:4347 [inline] __se_sys_mount+0x317/0x410 fs/namespace.c:4324 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: 0033:0x7eff831503ca 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:00007eff813ade68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007eff813adef0 RCX: 00007eff831503ca RDX: 0000200000000040 RSI: 0000200000000000 RDI: 00007eff813adeb0 RBP: 0000200000000040 R08: 00007eff813adef0 R09: 0000000000008800 R10: 0000000000008800 R11: 0000000000000246 R12: 0000200000000000 R13: 00007eff813adeb0 R14: 000000000000617a 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: 10 bd fe 4d 8d 77 f0 4c 89 f0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 56 e2 e5 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 3a e2 e5 fe 49 8b 3c 24 e8 c1 10 bd RSP: 0018:ffffc9000481f9c0 EFLAGS: 00010206 RAX: 0000000000000006 RBX: dffffc0000000000 RCX: 0000000000080000 RDX: ffffc9002980f000 RSI: 000000000000334b RDI: 000000000000334c RBP: ffffc9000481fb00 R08: 0000000000000000 R09: 0000000000000000 R10: ffffc9000481f7a8 R11: fffff52000903f22 R12: 0000000000000030 R13: ffff888039fdc218 R14: ffff88802849d428 R15: ffff88802849d438 FS: 00007eff813ae6c0(0000) GS:ffff8881269bc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8ffef99000 CR3: 0000000082eb2000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: 10 bd fe 4d 8d 77 adc %bh,0x778d4dfe(%rbp) 6: f0 4c 89 f0 lock 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 56 e2 e5 fe call 0xfee5e272 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 3a e2 e5 fe call 0xfee5e272 38: 49 8b 3c 24 mov (%r12),%rdi 3c: e8 .byte 0xe8 3d: c1 10 bd rcll $0xbd,(%rax)