general protection fault, probably for non-canonical address 0xdffffc000000000b: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000058-0x000000000000005f] CPU: 1 PID: 5479 Comm: syz-executor.0 Not tainted 6.6.0-syzkaller-06824-g8bc9e6515183 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 RIP: 0010:__timerqueue_less lib/timerqueue.c:22 [inline] RIP: 0010:rb_add_cached include/linux/rbtree.h:174 [inline] RIP: 0010:timerqueue_add+0xf7/0x330 lib/timerqueue.c:40 Code: 48 c1 ea 03 42 80 3c 22 00 0f 85 c4 01 00 00 49 8b 17 48 85 d2 74 40 48 89 d3 e8 54 b2 1a f7 48 8d 7b 18 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 0f 85 ab 01 00 00 4c 8b 7b 18 4c 89 ef 4c 89 fe e8 RSP: 0018:ffffc900001f0dd8 EFLAGS: 00010013 RAX: 000000000000000b RBX: 0000000000000046 RCX: ffffffff8a6dcab1 RDX: ffff888017f73b80 RSI: ffffffff8a6dca8c RDI: 000000000000005e RBP: ffff8880b992c270 R08: 0000000000000006 R09: 00000011f089b280 R10: ffffc90004e3fce8 R11: ffff8880b993d600 R12: dffffc0000000000 R13: 00000011f089b280 R14: 0000000000000000 R15: ffffc90004c6fb78 FS: 00007fae6ccf86c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd1c81bfc0 CR3: 0000000027086000 CR4: 0000000000350ef0 Call Trace: enqueue_hrtimer+0x16f/0x310 kernel/time/hrtimer.c:1094 __run_hrtimer kernel/time/hrtimer.c:1705 [inline] __hrtimer_run_queues+0xa0a/0xc10 kernel/time/hrtimer.c:1752 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline] __sysvec_apic_timer_interrupt+0x105/0x3f0 arch/x86/kernel/apic/apic.c:1082 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1076 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 RIP: 0010:memmove+0x44/0x1b0 arch/x86/lib/memmove_64.S:68 Code: 00 48 83 fa 20 0f 82 01 01 00 00 66 0f 1f 44 00 00 48 81 fa a8 02 00 00 72 05 40 38 fe 74 47 48 83 ea 20 48 83 ea 20 4c 8b 1e <4c> 8b 56 08 4c 8b 4e 10 4c 8b 46 18 48 8d 76 20 4c 89 1f 4c 89 57 RSP: 0018:ffffc90004e8ef18 EFLAGS: 00000282 RAX: ffff888071711fb4 RBX: 0000000000000002 RCX: ffff888071711030 RDX: fffffffff699e020 RSI: ffff88807ad73f24 RDI: ffff88807ad73f34 RBP: 0000000000000020 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000000 R14: ffff888071711fa4 R15: 0000000000000010 leaf_paste_entries+0x43c/0x920 fs/reiserfs/lbalance.c:1377 balance_leaf_finish_node_paste_dirent fs/reiserfs/do_balan.c:1295 [inline] balance_leaf_finish_node_paste fs/reiserfs/do_balan.c:1321 [inline] balance_leaf_finish_node fs/reiserfs/do_balan.c:1364 [inline] balance_leaf+0x9476/0xcd90 fs/reiserfs/do_balan.c:1452 do_balance+0x337/0x840 fs/reiserfs/do_balan.c:1888 reiserfs_paste_into_item+0x62a/0x7c0 fs/reiserfs/stree.c:2158 reiserfs_add_entry+0x936/0xd70 fs/reiserfs/namei.c:565 reiserfs_mkdir+0x68a/0x9a0 fs/reiserfs/namei.c:860 xattr_mkdir fs/reiserfs/xattr.c:77 [inline] create_privroot fs/reiserfs/xattr.c:891 [inline] reiserfs_xattr_init+0x57f/0xbb0 fs/reiserfs/xattr.c:1007 reiserfs_fill_super+0x2139/0x3150 fs/reiserfs/super.c:2175 mount_bdev+0x1f3/0x2e0 fs/super.c:1647 legacy_get_tree+0x109/0x220 fs/fs_context.c:662 vfs_get_tree+0x8c/0x370 fs/super.c:1768 do_new_mount fs/namespace.c:3337 [inline] path_mount+0x1492/0x1ed0 fs/namespace.c:3664 do_mount fs/namespace.c:3677 [inline] __do_sys_mount fs/namespace.c:3886 [inline] __se_sys_mount fs/namespace.c:3863 [inline] __x64_sys_mount+0x293/0x310 fs/namespace.c:3863 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3f/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7fae6c07e1ea Code: 48 83 ee 01 d1 ff ff 48 83 7c 24 30 00 74 2e 64 41 c7 04 24 d1 ff ff 48 83 7c 24 30 00 74 2e 64 41 c7 04 24 ef bb 22 00 00 00 <64> 41 c7 04 24 22 00 00 00 e8 ef bb 22 00 00 00 64 41 c7 04 24 22 RSP: 002b:00007fae6ccf7ee8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fae6ccf7f80 RCX: 00007fae6c07e1ea RDX: 0000000020000080 RSI: 0000000020000040 RDI: 00007fae6ccf7f40 RBP: 0000000020000080 R08: 00007fae6ccf7f80 R09: 000000000000800c R10: 000000000000800c R11: 0000000000000246 R12: 0000000020000040 R13: 00007fae6ccf7f40 R14: 0000000000001118 R15: 0000000020001380 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__timerqueue_less lib/timerqueue.c:22 [inline] RIP: 0010:rb_add_cached include/linux/rbtree.h:174 [inline] RIP: 0010:timerqueue_add+0xf7/0x330 lib/timerqueue.c:40 Code: 48 c1 ea 03 42 80 3c 22 00 0f 85 c4 01 00 00 49 8b 17 48 85 d2 74 40 48 89 d3 e8 54 b2 1a f7 48 8d 7b 18 48 89 f8 48 c1 e8 03 <42> 80 3c 20 00 0f 85 ab 01 00 00 4c 8b 7b 18 4c 89 ef 4c 89 fe e8 RSP: 0018:ffffc900001f0dd8 EFLAGS: 00010013 RAX: 000000000000000b RBX: 0000000000000046 RCX: ffffffff8a6dcab1 RDX: ffff888017f73b80 RSI: ffffffff8a6dca8c RDI: 000000000000005e RBP: ffff8880b992c270 R08: 0000000000000006 R09: 00000011f089b280 R10: ffffc90004e3fce8 R11: ffff8880b993d600 R12: dffffc0000000000 R13: 00000011f089b280 R14: 0000000000000000 R15: ffffc90004c6fb78 FS: 00007fae6ccf86c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd1c81bfc0 CR3: 0000000027086000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess): 0: 48 c1 ea 03 shr $0x3,%rdx 4: 42 80 3c 22 00 cmpb $0x0,(%rdx,%r12,1) 9: 0f 85 c4 01 00 00 jne 0x1d3 f: 49 8b 17 mov (%r15),%rdx 12: 48 85 d2 test %rdx,%rdx 15: 74 40 je 0x57 17: 48 89 d3 mov %rdx,%rbx 1a: e8 54 b2 1a f7 call 0xf71ab273 1f: 48 8d 7b 18 lea 0x18(%rbx),%rdi 23: 48 89 f8 mov %rdi,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction 2f: 0f 85 ab 01 00 00 jne 0x1e0 35: 4c 8b 7b 18 mov 0x18(%rbx),%r15 39: 4c 89 ef mov %r13,%rdi 3c: 4c 89 fe mov %r15,%rsi 3f: e8 .byte 0xe8