Oops: general protection fault, probably for non-canonical address 0xfbd59c000000001b: 0000 [#1] SMP KASAN PTI KASAN: maybe wild-memory-access in range [0xdead0000000000d8-0xdead0000000000df] CPU: 0 UID: 0 PID: 9448 Comm: syz-executor Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:202 [inline] RIP: 0010:jfs_flush_journal+0x984/0xf50 fs/jfs/jfs_logmgr.c:1579 Code: 4c 89 f7 e8 ee 92 cf fe 4d 8b 2e 4d 39 f5 75 0f e8 c1 27 66 fe e9 1b 01 00 00 e8 b7 27 66 fe 4d 8d 75 d8 4c 89 f0 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 f7 e8 be 92 cf fe 4d 8b 36 4d 85 f6 74 28 RSP: 0018:ffffc90003e0fb20 EFLAGS: 00010a06 RAX: 1bd5a0000000001b RBX: dffffc0000000000 RCX: ffff888028305d00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90003e0fc60 R08: ffffffff8faf7ff7 R09: 1ffffffff1f5effe R10: dffffc0000000000 R11: fffffbfff1f5efff R12: 00000000000000a0 R13: dead000000000100 R14: dead0000000000d8 R15: ffff888062e92ad8 FS: 00005555628d3500(0000) GS:ffff888125c49000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055bb2ba54950 CR3: 0000000060724000 CR4: 00000000003526f0 Call Trace: jfs_umount+0x150/0x3b0 fs/jfs/jfs_umount.c:59 jfs_put_super+0x8c/0x190 fs/jfs/super.c:194 generic_shutdown_super+0x13d/0x2d0 fs/super.c:647 kill_block_super+0x44/0x90 fs/super.c:1665 deactivate_locked_super+0xbc/0x130 fs/super.c:477 cleanup_mnt+0x3d3/0x460 fs/namespace.c:1317 task_work_run+0x1d9/0x270 kernel/task_work.c:233 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] __exit_to_user_mode_loop kernel/entry/common.c:70 [inline] exit_to_user_mode_loop+0x1fa/0x730 kernel/entry/common.c:101 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline] do_syscall_64+0x353/0x580 arch/x86/entry/syscall_64.c:100 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f5d45d5f097 Code: a2 c7 05 5c 26 25 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007ffd83116d58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 00007f5d45df32ca RCX: 00007f5d45d5f097 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd83116e10 RBP: 00007ffd83116e10 R08: 00007ffd83117e10 R09: 00000000ffffffff R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd83117ea0 R13: 00007f5d45df32ca R14: 00000000000704ab R15: 00007ffd83117ee0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:write_special_inodes fs/jfs/jfs_logmgr.c:202 [inline] RIP: 0010:jfs_flush_journal+0x984/0xf50 fs/jfs/jfs_logmgr.c:1579 Code: 4c 89 f7 e8 ee 92 cf fe 4d 8b 2e 4d 39 f5 75 0f e8 c1 27 66 fe e9 1b 01 00 00 e8 b7 27 66 fe 4d 8d 75 d8 4c 89 f0 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 f7 e8 be 92 cf fe 4d 8b 36 4d 85 f6 74 28 RSP: 0018:ffffc90003e0fb20 EFLAGS: 00010a06 RAX: 1bd5a0000000001b RBX: dffffc0000000000 RCX: ffff888028305d00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90003e0fc60 R08: ffffffff8faf7ff7 R09: 1ffffffff1f5effe R10: dffffc0000000000 R11: fffffbfff1f5efff R12: 00000000000000a0 R13: dead000000000100 R14: dead0000000000d8 R15: ffff888062e92ad8 FS: 00005555628d3500(0000) GS:ffff888125c49000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055bb2ba54950 CR3: 0000000060724000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: 4c 89 f7 mov %r14,%rdi 3: e8 ee 92 cf fe call 0xfecf92f6 8: 4d 8b 2e mov (%r14),%r13 b: 4d 39 f5 cmp %r14,%r13 e: 75 0f jne 0x1f 10: e8 c1 27 66 fe call 0xfe6627d6 15: e9 1b 01 00 00 jmp 0x135 1a: e8 b7 27 66 fe call 0xfe6627d6 1f: 4d 8d 75 d8 lea -0x28(%r13),%r14 23: 4c 89 f0 mov %r14,%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 f7 mov %r14,%rdi 33: e8 be 92 cf fe call 0xfecf92f6 38: 4d 8b 36 mov (%r14),%r14 3b: 4d 85 f6 test %r14,%r14 3e: 74 28 je 0x68