general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007] CPU: 1 PID: 306 Comm: syz-executor.2 Not tainted 5.15.148-syzkaller-00013-gad06eaf051cd #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 RIP: 0010:____rb_erase_color lib/rbtree.c:354 [inline] RIP: 0010:__rb_erase_color+0x20b/0xa60 lib/rbtree.c:413 Code: 49 89 de 49 c1 ee 03 43 80 3c 26 00 74 08 48 89 df e8 d9 23 2b ff 4c 8b 3b 4d 89 fc 49 c1 ec 03 48 b8 00 00 00 00 00 fc ff df <41> 80 3c 04 00 74 08 4c 89 ff e8 b6 23 2b ff 41 f6 07 01 48 89 5d RSP: 0018:ffffc90000ab7a00 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff8881206e8508 RCX: ffff888123d64f00 RDX: ffffffff81a51930 RSI: ffff88810932f250 RDI: ffff8881206e84f8 RBP: ffffc90000ab7a60 R08: ffffffff81a4f9f0 R09: ffffed1021265e4e R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: ffff8881206e84f8 R14: 1ffff110240dd0a1 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fffab131b78 CR3: 0000000126042000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rb_erase_augmented include/linux/rbtree_augmented.h:305 [inline] rb_erase_augmented_cached include/linux/rbtree_augmented.h:314 [inline] vma_interval_tree_remove+0xb82/0xba0 mm/interval_tree.c:23 __remove_shared_vm_struct mm/mmap.c:158 [inline] unlink_file_vma+0xd9/0xf0 mm/mmap.c:173 free_pgtables+0x13f/0x280 mm/memory.c:486 exit_mmap+0x3e7/0x6f0 mm/mmap.c:3210 __mmput+0x95/0x310 kernel/fork.c:1179 mmput+0x5b/0x170 kernel/fork.c:1202 exit_mm kernel/exit.c:552 [inline] do_exit+0xb9c/0x2ca0 kernel/exit.c:865 do_group_exit+0x141/0x310 kernel/exit.c:1000 __do_sys_exit_group kernel/exit.c:1011 [inline] __se_sys_exit_group kernel/exit.c:1009 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1009 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7fa156e63ea9 Code: Unable to access opcode bytes at RIP 0x7fa156e63e7f. RSP: 002b:00007fffab131d38 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 000000000000000b RCX: 00007fa156e63ea9 RDX: 00007fa156e63657 RSI: 0000000000000000 RDI: 000000000000000b RBP: 00007fffab1323e0 R08: 0000000000000000 R09: 000000000000000b R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffab1334a0 R13: 00007fa156eaf3b9 R14: 0000000000011114 R15: 000000000000001d Modules linked in: ---[ end trace ca20dd25d171e99d ]--- RIP: 0010:____rb_erase_color lib/rbtree.c:354 [inline] RIP: 0010:__rb_erase_color+0x20b/0xa60 lib/rbtree.c:413 Code: 49 89 de 49 c1 ee 03 43 80 3c 26 00 74 08 48 89 df e8 d9 23 2b ff 4c 8b 3b 4d 89 fc 49 c1 ec 03 48 b8 00 00 00 00 00 fc ff df <41> 80 3c 04 00 74 08 4c 89 ff e8 b6 23 2b ff 41 f6 07 01 48 89 5d RSP: 0018:ffffc90000ab7a00 EFLAGS: 00010246 RAX: dffffc0000000000 RBX: ffff8881206e8508 RCX: ffff888123d64f00 RDX: ffffffff81a51930 RSI: ffff88810932f250 RDI: ffff8881206e84f8 RBP: ffffc90000ab7a60 R08: ffffffff81a4f9f0 R09: ffffed1021265e4e R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: ffff8881206e84f8 R14: 1ffff110240dd0a1 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fffab131b78 CR3: 00000001254e7000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 49 89 de mov %rbx,%r14 3: 49 c1 ee 03 shr $0x3,%r14 7: 43 80 3c 26 00 cmpb $0x0,(%r14,%r12,1) c: 74 08 je 0x16 e: 48 89 df mov %rbx,%rdi 11: e8 d9 23 2b ff call 0xff2b23ef 16: 4c 8b 3b mov (%rbx),%r15 19: 4d 89 fc mov %r15,%r12 1c: 49 c1 ec 03 shr $0x3,%r12 20: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 27: fc ff df * 2a: 41 80 3c 04 00 cmpb $0x0,(%r12,%rax,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 4c 89 ff mov %r15,%rdi 34: e8 b6 23 2b ff call 0xff2b23ef 39: 41 f6 07 01 testb $0x1,(%r15) 3d: 48 rex.W 3e: 89 .byte 0x89 3f: 5d pop %rbp