general protection fault, probably for non-canonical address 0xfbd59c0000000021: 0000 [#1] PREEMPT SMP KASAN KASAN: maybe wild-memory-access in range [0xdead000000000108-0xdead00000000010f] CPU: 1 PID: 121 Comm: jfsCommit Not tainted 6.0.0-rc7-syzkaller-00029-g3800a713b607 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 RIP: 0010:__list_add_valid+0x39/0x100 lib/list_debug.c:27 Code: 00 00 00 49 89 d6 48 85 d2 0f 84 9b 00 00 00 49 89 f4 49 89 ff 49 bd 00 00 00 00 00 fc ff df 49 8d 5e 08 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 f8 40 a5 fd 48 8b 13 4c 39 e2 75 RSP: 0018:ffffc9000225fc10 EFLAGS: 00010806 RAX: 1bd5a00000000021 RBX: dead000000000108 RCX: dffffc0000000000 RDX: dead000000000100 RSI: ffffc90002271120 RDI: ffff88801d761da0 RBP: ffff88801d761d90 R08: ffffffff82fc6834 R09: fffff5200044bf64 R10: fffff5200044bf65 R11: 1ffff9200044bf64 R12: ffffc90002271120 R13: dffffc0000000000 R14: dead000000000100 R15: ffff88801d761da0 FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f86dc15d290 CR3: 0000000025a6f000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_add include/linux/list.h:69 [inline] list_add include/linux/list.h:88 [inline] diUpdatePMap+0x5d6/0xda0 fs/jfs/jfs_imap.c:2821 txUpdateMap+0x7c4/0xaa0 fs/jfs/jfs_txnmgr.c:2351 txLazyCommit fs/jfs/jfs_txnmgr.c:2659 [inline] jfs_lazycommit+0x433/0xba0 fs/jfs/jfs_txnmgr.c:2727 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__list_add_valid+0x39/0x100 lib/list_debug.c:27 Code: 00 00 00 49 89 d6 48 85 d2 0f 84 9b 00 00 00 49 89 f4 49 89 ff 49 bd 00 00 00 00 00 fc ff df 49 8d 5e 08 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 f8 40 a5 fd 48 8b 13 4c 39 e2 75 RSP: 0018:ffffc9000225fc10 EFLAGS: 00010806 RAX: 1bd5a00000000021 RBX: dead000000000108 RCX: dffffc0000000000 RDX: dead000000000100 RSI: ffffc90002271120 RDI: ffff88801d761da0 RBP: ffff88801d761d90 R08: ffffffff82fc6834 R09: fffff5200044bf64 R10: fffff5200044bf65 R11: 1ffff9200044bf64 R12: ffffc90002271120 R13: dffffc0000000000 R14: dead000000000100 R15: ffff88801d761da0 FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f86dc15d290 CR3: 0000000025a6f000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 00 00 add %al,(%rax) 2: 49 89 d6 mov %rdx,%r14 5: 48 85 d2 test %rdx,%rdx 8: 0f 84 9b 00 00 00 je 0xa9 e: 49 89 f4 mov %rsi,%r12 11: 49 89 ff mov %rdi,%r15 14: 49 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%r13 1b: fc ff df 1e: 49 8d 5e 08 lea 0x8(%r14),%rbx 22: 48 89 d8 mov %rbx,%rax 25: 48 c1 e8 03 shr $0x3,%rax * 29: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction 2e: 74 08 je 0x38 30: 48 89 df mov %rbx,%rdi 33: e8 f8 40 a5 fd callq 0xfda54130 38: 48 8b 13 mov (%rbx),%rdx 3b: 4c 39 e2 cmp %r12,%rdx 3e: 75 .byte 0x75