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: 1 UID: 0 PID: 10246 Comm: syz.1.1538 Not tainted 6.17.0-rc1-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:write_special_inodes+0xa9/0x170 fs/jfs/jfs_logmgr.c:208 Code: 2e e8 7b 5b 4b 08 48 8d 7b 28 48 89 f8 48 c1 e8 03 80 3c 28 00 0f 85 b1 00 00 00 4c 8b 6b 28 49 8d 7d 30 48 89 f8 48 c1 e8 03 <80> 3c 28 00 0f 85 8e 00 00 00 49 8b 7d 30 2e e8 43 5b 4b 08 48 8d RSP: 0018:ffffc900040ffa88 EFLAGS: 00010216 RAX: 0000000000000006 RBX: ffff8880775a0600 RCX: ffffc9000b4b9000 RDX: 0000000000000000 RSI: ffffffff81f13861 RDI: 0000000000000030 RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff81f20a60 R13: 0000000000000000 R14: ffff888056f20800 R15: ffff888056f209d0 FS: 00007f2058b6c6c0(0000) GS:ffff8881247c0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3b1adeff98 CR3: 000000005fd76000 CR4: 0000000000350ef0 Call Trace: jfs_flush_journal+0x3e6/0xa60 fs/jfs/jfs_logmgr.c:1573 jfs_umount+0x17a/0x440 fs/jfs/jfs_umount.c:58 jfs_fill_super+0xd18/0x1040 fs/jfs/super.c:567 get_tree_bdev_flags+0x38c/0x620 fs/super.c:1692 vfs_get_tree+0x8e/0x340 fs/super.c:1815 do_new_mount fs/namespace.c:3805 [inline] path_mount+0x1482/0x1fd0 fs/namespace.c:4120 do_mount fs/namespace.c:4133 [inline] __do_sys_mount fs/namespace.c:4344 [inline] __se_sys_mount fs/namespace.c:4321 [inline] __x64_sys_mount+0x28d/0x310 fs/namespace.c:4321 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2057d9038a 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:00007f2058b6be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f2058b6bef0 RCX: 00007f2057d9038a RDX: 00002000000001c0 RSI: 0000200000000180 RDI: 00007f2058b6beb0 RBP: 00002000000001c0 R08: 00007f2058b6bef0 R09: 0000000000000002 R10: 0000000000000002 R11: 0000000000000246 R12: 0000200000000180 R13: 00007f2058b6beb0 R14: 000000000000614f R15: 0000200000000200 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:write_special_inodes+0xa9/0x170 fs/jfs/jfs_logmgr.c:208 Code: 2e e8 7b 5b 4b 08 48 8d 7b 28 48 89 f8 48 c1 e8 03 80 3c 28 00 0f 85 b1 00 00 00 4c 8b 6b 28 49 8d 7d 30 48 89 f8 48 c1 e8 03 <80> 3c 28 00 0f 85 8e 00 00 00 49 8b 7d 30 2e e8 43 5b 4b 08 48 8d RSP: 0018:ffffc900040ffa88 EFLAGS: 00010216 RAX: 0000000000000006 RBX: ffff8880775a0600 RCX: ffffc9000b4b9000 RDX: 0000000000000000 RSI: ffffffff81f13861 RDI: 0000000000000030 RBP: dffffc0000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff81f20a60 R13: 0000000000000000 R14: ffff888056f20800 R15: ffff888056f209d0 FS: 00007f2058b6c6c0(0000) GS:ffff8881247c0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f3b1adeff98 CR3: 000000005fd76000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess): 0: 2e e8 7b 5b 4b 08 cs call 0x84b5b81 6: 48 8d 7b 28 lea 0x28(%rbx),%rdi a: 48 89 f8 mov %rdi,%rax d: 48 c1 e8 03 shr $0x3,%rax 11: 80 3c 28 00 cmpb $0x0,(%rax,%rbp,1) 15: 0f 85 b1 00 00 00 jne 0xcc 1b: 4c 8b 6b 28 mov 0x28(%rbx),%r13 1f: 49 8d 7d 30 lea 0x30(%r13),%rdi 23: 48 89 f8 mov %rdi,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 80 3c 28 00 cmpb $0x0,(%rax,%rbp,1) <-- trapping instruction 2e: 0f 85 8e 00 00 00 jne 0xc2 34: 49 8b 7d 30 mov 0x30(%r13),%rdi 38: 2e e8 43 5b 4b 08 cs call 0x84b5b81 3e: 48 rex.W 3f: 8d .byte 0x8d