general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017] CPU: 0 PID: 15636 Comm: syz-executor.5 Not tainted 6.2.0-rc6-next-20230201-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 RIP: 0010:s_show+0x6d/0xa90 mm/vmalloc.c:4163 Code: 74 24 08 49 8b 5e 10 48 85 db 0f 84 1b 05 00 00 e8 78 8d be ff 48 8d 7b 10 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 35 09 00 00 48 8d 7b 08 4c 8b 43 10 48 b8 00 00 RSP: 0018:ffffc900047d79d8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000d1c3000 RDX: 0000000000000002 RSI: ffffffff81c63d58 RDI: 0000000000000010 RBP: ffff8880347eecb8 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 000000000000a878 R14: ffff88801c848778 R15: ffffffff8a58ae80 FS: 00007f137ed9f700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f19f2fac018 CR3: 000000002ba94000 CR4: 00000000003506f0 Call Trace: traverse.part.0+0xcf/0x5f0 fs/seq_file.c:111 traverse fs/seq_file.c:101 [inline] seq_read_iter+0x913/0x12d0 fs/seq_file.c:195 proc_reg_read_iter+0x1ff/0x2d0 fs/proc/inode.c:305 call_read_iter include/linux/fs.h:1845 [inline] do_iter_readv_writev+0x2e0/0x3b0 fs/read_write.c:733 do_iter_read+0x2f2/0x750 fs/read_write.c:796 vfs_readv+0xe5/0x150 fs/read_write.c:916 do_preadv fs/read_write.c:1008 [inline] __do_sys_preadv fs/read_write.c:1058 [inline] __se_sys_preadv fs/read_write.c:1053 [inline] __x64_sys_preadv+0x22f/0x310 fs/read_write.c:1053 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f137e08c0c9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f137ed9f168 EFLAGS: 00000246 ORIG_RAX: 0000000000000127 RAX: ffffffffffffffda RBX: 00007f137e1abf80 RCX: 00007f137e08c0c9 RDX: 0000000000000001 RSI: 0000000020000000 RDI: 0000000000000003 RBP: 00007f137e0e7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000fffffffe R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc57e82f6f R14: 00007f137ed9f300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:s_show+0x6d/0xa90 mm/vmalloc.c:4163 Code: 74 24 08 49 8b 5e 10 48 85 db 0f 84 1b 05 00 00 e8 78 8d be ff 48 8d 7b 10 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 35 09 00 00 48 8d 7b 08 4c 8b 43 10 48 b8 00 00 RSP: 0018:ffffc900047d79d8 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000d1c3000 RDX: 0000000000000002 RSI: ffffffff81c63d58 RDI: 0000000000000010 RBP: ffff8880347eecb8 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 000000000000a878 R14: ffff88801c848778 R15: ffffffff8a58ae80 FS: 00007f137ed9f700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f19f2fac018 CR3: 000000002ba94000 CR4: 00000000003506f0 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 24 08 and $0x8,%al 2: 49 8b 5e 10 mov 0x10(%r14),%rbx 6: 48 85 db test %rbx,%rbx 9: 0f 84 1b 05 00 00 je 0x52a f: e8 78 8d be ff callq 0xffbe8d8c 14: 48 8d 7b 10 lea 0x10(%rbx),%rdi 18: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1f: fc ff df 22: 48 89 fa mov %rdi,%rdx 25: 48 c1 ea 03 shr $0x3,%rdx * 29: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2d: 0f 85 35 09 00 00 jne 0x968 33: 48 8d 7b 08 lea 0x8(%rbx),%rdi 37: 4c 8b 43 10 mov 0x10(%rbx),%r8 3b: 48 rex.W 3c: b8 .byte 0xb8