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: 11293 Comm: syz.6.698 Not tainted 6.15.0-rc7-syzkaller-00175-g0f8c0258bf04 #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: 58 bb fe 4d 8d 77 f0 4c 89 f0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 f6 ea e4 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 da ea e4 fe 49 8b 3c 24 e8 11 58 bb RSP: 0018:ffffc90004b2fa80 EFLAGS: 00010206 RAX: 0000000000000006 RBX: dffffc0000000000 RCX: 0000000000080000 RDX: ffffc9000d59b000 RSI: 0000000000006110 RDI: 0000000000006111 RBP: ffffc90004b2fbc0 R08: ffffc90004b2f9df R09: 0000000000000000 R10: ffffc90004b2f868 R11: fffff52000965f3c R12: 0000000000000030 R13: ffff88805fdeb9a8 R14: ffff88805f5d4228 R15: ffff88805f5d4238 FS: 00007f555c44c6c0(0000) GS:ffff8881260f6000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f252ff82338 CR3: 0000000083b42000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 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:1636 vfs_get_tree+0x92/0x2b0 fs/super.c:1759 do_new_mount+0x24a/0xa40 fs/namespace.c:3881 do_mount fs/namespace.c:4221 [inline] __do_sys_mount fs/namespace.c:4432 [inline] __se_sys_mount+0x317/0x410 fs/namespace.c:4409 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f555b59010a 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:00007f555c44be68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f555c44bef0 RCX: 00007f555b59010a RDX: 0000200000000080 RSI: 0000200000000000 RDI: 00007f555c44beb0 RBP: 0000200000000080 R08: 00007f555c44bef0 R09: 0000000002010880 R10: 0000000002010880 R11: 0000000000000246 R12: 0000200000000000 R13: 00007f555c44beb0 R14: 000000000000611f R15: 0000200000000200 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: 58 bb fe 4d 8d 77 f0 4c 89 f0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 f6 ea e4 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 da ea e4 fe 49 8b 3c 24 e8 11 58 bb RSP: 0018:ffffc90004b2fa80 EFLAGS: 00010206 RAX: 0000000000000006 RBX: dffffc0000000000 RCX: 0000000000080000 RDX: ffffc9000d59b000 RSI: 0000000000006110 RDI: 0000000000006111 RBP: ffffc90004b2fbc0 R08: ffffc90004b2f9df R09: 0000000000000000 R10: ffffc90004b2f868 R11: fffff52000965f3c R12: 0000000000000030 R13: ffff88805fdeb9a8 R14: ffff88805f5d4228 R15: ffff88805f5d4238 FS: 00007f555c44c6c0(0000) GS:ffff8881260f6000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffcf3151028 CR3: 0000000083b42000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 58 pop %rax 1: bb fe 4d 8d 77 mov $0x778d4dfe,%ebx 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 f6 ea e4 fe call 0xfee4eb12 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 da ea e4 fe call 0xfee4eb12 38: 49 8b 3c 24 mov (%r12),%rdi 3c: e8 .byte 0xe8 3d: 11 58 bb adc %ebx,-0x45(%rax)