Oops: general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] CPU: 1 UID: 0 PID: 5216 Comm: syz-executor Not tainted 6.12.0-rc1-syzkaller-00330-gfc20a3e57247 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:diWrite+0x159/0x19b0 fs/jfs/jfs_imap.c:609 Code: 08 00 74 08 48 89 df e8 a5 e2 d3 fe 81 e5 ff ff ff 00 48 8b 1b 48 83 c3 10 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 7d 13 00 00 8b 1b 89 ef 89 de e8 e0 55 6d RSP: 0018:ffffc900036ff8b8 EFLAGS: 00010202 RAX: 0000000000000002 RBX: 0000000000000010 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 000000000000001c RDI: 0000000000000000 RBP: 0000000000000004 R08: ffffffff8327819f R09: 1ffff1100b51c943 R10: dffffc0000000000 R11: ffffed100b51c944 R12: ffff88802e75a000 R13: dffffc0000000000 R14: ffff88805a8e3b80 R15: 000000000000001c FS: 00005555689f7500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe25930f58 CR3: 000000006328c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: txCommit+0xa1a/0x6b90 fs/jfs/jfs_txnmgr.c:1255 jfs_unlink+0x4e8/0xb30 fs/jfs/namei.c:556 vfs_unlink+0x365/0x650 fs/namei.c:4469 do_unlinkat+0x4ae/0x830 fs/namei.c:4533 __do_sys_unlink fs/namei.c:4581 [inline] __se_sys_unlink fs/namei.c:4579 [inline] __x64_sys_unlink+0x47/0x50 fs/namei.c:4579 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f7252f7d5a7 Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 57 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:00007ffe25931708 EFLAGS: 00000206 ORIG_RAX: 0000000000000057 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7252f7d5a7 RDX: 00007ffe25931730 RSI: 00007ffe259317c0 RDI: 00007ffe259317c0 RBP: 00007ffe259317c0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffe259328b0 R13: 00007f7252ff0134 R14: 0000000000015d70 R15: 00007ffe25933970 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:diWrite+0x159/0x19b0 fs/jfs/jfs_imap.c:609 Code: 08 00 74 08 48 89 df e8 a5 e2 d3 fe 81 e5 ff ff ff 00 48 8b 1b 48 83 c3 10 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 7d 13 00 00 8b 1b 89 ef 89 de e8 e0 55 6d RSP: 0018:ffffc900036ff8b8 EFLAGS: 00010202 RAX: 0000000000000002 RBX: 0000000000000010 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 000000000000001c RDI: 0000000000000000 RBP: 0000000000000004 R08: ffffffff8327819f R09: 1ffff1100b51c943 R10: dffffc0000000000 R11: ffffed100b51c944 R12: ffff88802e75a000 R13: dffffc0000000000 R14: ffff88805a8e3b80 R15: 000000000000001c FS: 00005555689f7500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd82c667d60 CR3: 000000006328c000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 08 00 or %al,(%rax) 2: 74 08 je 0xc 4: 48 89 df mov %rbx,%rdi 7: e8 a5 e2 d3 fe call 0xfed3e2b1 c: 81 e5 ff ff ff 00 and $0xffffff,%ebp 12: 48 8b 1b mov (%rbx),%rbx 15: 48 83 c3 10 add $0x10,%rbx 19: 48 89 d8 mov %rbx,%rax 1c: 48 c1 e8 03 shr $0x3,%rax 20: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 27: fc ff df * 2a: 0f b6 04 08 movzbl (%rax,%rcx,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 0f 85 7d 13 00 00 jne 0x13b3 36: 8b 1b mov (%rbx),%ebx 38: 89 ef mov %ebp,%edi 3a: 89 de mov %ebx,%esi 3c: e8 .byte 0xe8 3d: e0 55 loopne 0x94 3f: 6d insl (%dx),%es:(%rdi)