general protection fault, probably for non-canonical address 0xfbd59c0000000021: 0000 [#1] PREEMPT SMP KASAN KASAN: maybe wild-memory-access in range [0xdead000000000108-0xdead00000000010f] CPU: 0 PID: 113 Comm: jfsCommit Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:__list_add_valid_or_report+0x3d/0xf0 lib/list_debug.c:29 Code: 00 00 00 48 89 d3 48 85 d2 0f 84 8c 00 00 00 49 89 f6 49 89 ff 49 bd 00 00 00 00 00 fc ff df 4c 8d 63 08 4c 89 e0 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 e7 e8 d4 e3 b6 fd 49 8b 14 24 4c 39 f2 RSP: 0018:ffffc900024cfc70 EFLAGS: 00010806 RAX: 1bd5a00000000021 RBX: dead000000000100 RCX: 0000000000000000 RDX: dead000000000100 RSI: ffffc90002629120 RDI: ffff88802eb8a9c0 RBP: ffff88802eb8a9b0 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffff52000499f70 R12: dead000000000108 R13: dffffc0000000000 R14: ffffc90002629120 R15: ffff88802eb8a9c0 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055555d7595c8 CR3: 000000001f78e000 CR4: 00000000003506f0 Call Trace: __list_add_valid include/linux/list.h:88 [inline] __list_add include/linux/list.h:150 [inline] list_add include/linux/list.h:169 [inline] diUpdatePMap+0x62d/0xe50 fs/jfs/jfs_imap.c:2831 txUpdateMap+0x6c2/0x890 fs/jfs/jfs_txnmgr.c:2356 txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline] jfs_lazycommit+0x42b/0xa60 fs/jfs/jfs_txnmgr.c:2732 kthread+0x2fa/0x390 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_add_valid_or_report+0x3d/0xf0 lib/list_debug.c:29 Code: 00 00 00 48 89 d3 48 85 d2 0f 84 8c 00 00 00 49 89 f6 49 89 ff 49 bd 00 00 00 00 00 fc ff df 4c 8d 63 08 4c 89 e0 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 e7 e8 d4 e3 b6 fd 49 8b 14 24 4c 39 f2 RSP: 0018:ffffc900024cfc70 EFLAGS: 00010806 RAX: 1bd5a00000000021 RBX: dead000000000100 RCX: 0000000000000000 RDX: dead000000000100 RSI: ffffc90002629120 RDI: ffff88802eb8a9c0 RBP: ffff88802eb8a9b0 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffff52000499f70 R12: dead000000000108 R13: dffffc0000000000 R14: ffffc90002629120 R15: ffff88802eb8a9c0 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055555d7595c8 CR3: 000000001f78e000 CR4: 00000000003506f0 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 00 48 89 add %cl,-0x77(%rax) 5: d3 48 85 rorl %cl,-0x7b(%rax) 8: d2 0f rorb %cl,(%rdi) a: 84 8c 00 00 00 49 89 test %cl,-0x76b70000(%rax,%rax,1) 11: f6 49 89 ff testb $0xff,-0x77(%rcx) 15: 49 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%r13 1c: fc ff df 1f: 4c 8d 63 08 lea 0x8(%rbx),%r12 23: 4c 89 e0 mov %r12,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 4c 89 e7 mov %r12,%rdi 34: e8 d4 e3 b6 fd call 0xfdb6e40d 39: 49 8b 14 24 mov (%r12),%rdx 3d: 4c 39 f2 cmp %r14,%rdx