read_mapping_page failed! diRead: diIAGRead returned -5 Oops: general protection fault, probably for non-canonical address 0xdffffc0000000006: 0000 [#1] SMP KASAN NOPTI KASAN: null-ptr-deref in range [0x0000000000000030-0x0000000000000037] CPU: 0 UID: 0 PID: 16394 Comm: syz.8.2485 Not tainted 6.16.0-rc2-syzkaller-00318-g739a6c93cc75 #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:207 [inline] RIP: 0010:jfs_flush_journal+0x7ba/0xed0 fs/jfs/jfs_logmgr.c:1573 Code: 00 00 00 4d 8d 77 d8 4c 89 f0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 f4 1e 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 d8 1e e3 fe 49 8b 3c 24 e8 3f 5b b6 RSP: 0018:ffffc90015ee7a60 EFLAGS: 00010216 RAX: 0000000000000006 RBX: dffffc0000000000 RCX: 0000000000080000 RDX: ffffc90021b02000 RSI: 0000000000004e3c RDI: 0000000000004e3d RBP: ffffc90015ee7ba0 R08: ffffc90015ee79bf R09: ffffc90015ee7848 R10: dffffc0000000000 R11: fffff52002bdcf38 R12: 0000000000000030 R13: ffff88805548e1a8 R14: ffff888030fb5a10 R15: ffff888030fb5a38 FS: 00007f4c27b4d6c0(0000) GS:ffff888125c51000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000000200 CR3: 000000003791b000 CR4: 0000000000350ef0 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+0x40e/0x4d0 fs/super.c:1681 vfs_get_tree+0x92/0x2b0 fs/super.c:1804 do_new_mount+0x24a/0xa40 fs/namespace.c:3885 do_mount fs/namespace.c:4222 [inline] __do_sys_mount fs/namespace.c:4433 [inline] __se_sys_mount+0x317/0x410 fs/namespace.c:4410 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: 0033:0x7f4c26d900ca 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:00007f4c27b4ce68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f4c27b4cef0 RCX: 00007f4c26d900ca RDX: 0000200000000080 RSI: 0000200000000000 RDI: 00007f4c27b4ceb0 RBP: 0000200000000080 R08: 00007f4c27b4cef0 R09: 0000000002010880 R10: 0000000002010880 R11: 0000000000000246 R12: 0000200000000000 R13: 00007f4c27b4ceb0 R14: 000000000000611f R15: 0000200000000200 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:207 [inline] RIP: 0010:jfs_flush_journal+0x7ba/0xed0 fs/jfs/jfs_logmgr.c:1573 Code: 00 00 00 4d 8d 77 d8 4c 89 f0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 f4 1e 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 d8 1e e3 fe 49 8b 3c 24 e8 3f 5b b6 RSP: 0018:ffffc90015ee7a60 EFLAGS: 00010216 RAX: 0000000000000006 RBX: dffffc0000000000 RCX: 0000000000080000 RDX: ffffc90021b02000 RSI: 0000000000004e3c RDI: 0000000000004e3d RBP: ffffc90015ee7ba0 R08: ffffc90015ee79bf R09: ffffc90015ee7848 R10: dffffc0000000000 R11: fffff52002bdcf38 R12: 0000000000000030 R13: ffff88805548e1a8 R14: ffff888030fb5a10 R15: ffff888030fb5a38 FS: 00007f4c27b4d6c0(0000) GS:ffff888125d51000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc6c959ff8 CR3: 000000003791b000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 00 4d 8d add %cl,-0x73(%rbp) 5: 77 d8 ja 0xffffffdf 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 f4 1e e3 fe call 0xfee31f10 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 d8 1e e3 fe call 0xfee31f10 38: 49 8b 3c 24 mov (%r12),%rdi 3c: e8 .byte 0xe8 3d: 3f (bad) 3e: 5b pop %rbx 3f: b6 .byte 0xb6