program: futex(&(0x7f000000cffc), 0x80000000000b, 0x0, 0x0, &(0x7f0000048000), 0x0) futex(&(0x7f000000cffc)=0x4, 0x80000000000b, 0x4, 0x0, &(0x7f0000048000), 0x0) futex(&(0x7f000000cffc), 0xc, 0x1, &(0x7f0000000280), &(0x7f0000048000)=0x5, 0x0) [ 110.307757][ T5330] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000151: 0000 [#1] SMP KASAN NOPTI [ 110.312953][ T5330] KASAN: null-ptr-deref in range [0x0000000000000a88-0x0000000000000a8f] [ 110.316717][ T5330] CPU: 0 UID: 0 PID: 5330 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) [ 110.320566][ T5330] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 [ 110.324618][ T5330] RIP: 0010:kasan_byte_accessible+0x12/0x30 [ 110.327197][ T5330] Code: 79 ff ff ff 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 e9 c0 bf 79 09 cc 66 66 66 66 66 66 2e [ 110.335374][ T5330] RSP: 0018:ffffc9000650f840 EFLAGS: 00010002 [ 110.338212][ T5330] RAX: dffffc0000000000 RBX: ffffffff8babdd3e RCX: 0000000000000005 [ 110.341883][ T5330] RDX: 0000000000000000 RSI: ffffffff8babdd3e RDI: 0000000000000151 [ 110.345444][ T5330] RBP: ffffffff8bab7da8 R08: 0000000000000001 R09: 0000000000000000 [ 110.349036][ T5330] R10: dffffc0000000000 R11: fffff52000ca1f24 R12: 0000000000000000 [ 110.352530][ T5330] R13: 0000000000000a88 R14: 0000000000000a88 R15: 0000000000000001 [ 110.355832][ T5330] FS: 00007fbf24bf16c0(0000) GS:ffff88808c88b000(0000) knlGS:0000000000000000 [ 110.359512][ T5330] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 110.362253][ T5330] CR2: 00007fbf24bf0fe8 CR3: 000000003274e000 CR4: 0000000000352ef0 [ 110.365938][ T5330] Call Trace: [ 110.367845][ T5330] [ 110.369259][ T5330] __kasan_check_byte+0x12/0x40 [ 110.371459][ T5330] lock_acquire+0x84/0x350 [ 110.373505][ T5330] _raw_spin_lock+0x2e/0x40 [ 110.375582][ T5330] ? remove_waiter+0x138/0xb10 [ 110.377744][ T5330] remove_waiter+0x138/0xb10 [ 110.379810][ T5330] ? try_to_take_rt_mutex+0x4f/0xac0 [ 110.382239][ T5330] rt_mutex_start_proxy_lock+0x10a/0x230 [ 110.384785][ T5330] ? __pfx_rt_mutex_start_proxy_lock+0x10/0x10 [ 110.387540][ T5330] ? plist_add+0x4ae/0x540 [ 110.389713][ T5330] ? futex_requeue+0x1205/0x1c90 [ 110.392318][ T5330] futex_requeue+0xfb5/0x1c90 [ 110.394459][ T5330] ? __pfx_futex_requeue+0x10/0x10 [ 110.396831][ T5330] ? kasan_quarantine_put+0xbb/0x1f0 [ 110.399340][ T5330] ? tomoyo_path_number_perm+0x219/0x630 [ 110.401932][ T5330] ? do_vfs_ioctl+0x1166/0x1530 [ 110.404219][ T5330] ? __lock_acquire+0x6b5/0x2cf0 [ 110.406533][ T5330] ? do_raw_spin_lock+0x12b/0x2f0 [ 110.408901][ T5330] do_futex+0x362/0x420 [ 110.410936][ T5330] ? __pfx_do_futex+0x10/0x10 [ 110.413091][ T5330] ? do_raw_spin_lock+0x12b/0x2f0 [ 110.415439][ T5330] __se_sys_futex+0x3a8/0x450 [ 110.417657][ T5330] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 110.420257][ T5330] ? __pfx___se_sys_futex+0x10/0x10 [ 110.422663][ T5330] ? __x64_sys_futex+0x21/0xf0 [ 110.424813][ T5330] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 110.427592][ T5330] do_syscall_64+0x15f/0xf80 [ 110.429992][ T5330] ? trace_irq_disable+0x3b/0x140 [ 110.432533][ T5330] ? clear_bhb_loop+0x40/0x90 [ 110.434811][ T5330] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 110.437514][ T5330] RIP: 0033:0x7fbf23d9cdd9 [ 110.439682][ T5330] Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48 [ 110.448445][ T5330] RSP: 002b:00007fbf24bf0fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 110.452241][ T5330] RAX: ffffffffffffffda RBX: 00007fbf24016180 RCX: 00007fbf23d9cdd9 [ 110.456006][ T5330] RDX: 0000000000000001 RSI: 000000000000000c RDI: 000020000000cffc [ 110.459658][ T5330] RBP: 00007fbf23e32d69 R08: 0000200000048000 R09: 0000000000000000 [ 110.463204][ T5330] R10: 0000200000000280 R11: 0000000000000246 R12: 0000000000000000 [ 110.466799][ T5330] R13: 00007fbf24016218 R14: 00007fbf24016180 R15: 00007fff7ff77d38 [ 110.470644][ T5330] [ 110.472219][ T5330] Modules linked in: [ 110.474034][ T5330] ---[ end trace 0000000000000000 ]--- [ 110.476544][ T5330] RIP: 0010:kasan_byte_accessible+0x12/0x30 [ 110.479325][ T5330] Code: 79 ff ff ff 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6 48 c1 ef 03 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 07 3c 08 0f 92 c0 e9 c0 bf 79 09 cc 66 66 66 66 66 66 2e [ 110.487894][ T5330] RSP: 0018:ffffc9000650f840 EFLAGS: 00010002 [ 110.490684][ T5330] RAX: dffffc0000000000 RBX: ffffffff8babdd3e RCX: 0000000000000005 [ 110.494245][ T5330] RDX: 0000000000000000 RSI: ffffffff8babdd3e RDI: 0000000000000151 [ 110.497629][ T5330] RBP: ffffffff8bab7da8 R08: 0000000000000001 R09: 0000000000000000 [ 110.501147][ T5330] R10: dffffc0000000000 R11: fffff52000ca1f24 R12: 0000000000000000 [ 110.504519][ T5330] R13: 0000000000000a88 R14: 0000000000000a88 R15: 0000000000000001 [ 110.508280][ T5330] FS: 00007fbf24bf16c0(0000) GS:ffff88808c88b000(0000) knlGS:0000000000000000 [ 110.512506][ T5330] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 110.515484][ T5330] CR2: 00007fbf24bf0fe8 CR3: 000000003274e000 CR4: 0000000000352ef0 [ 110.519118][ T5330] Kernel panic - not syncing: Fatal exception [ 110.522348][ T5330] Kernel Offset: disabled [ 110.524317][ T5330] Rebooting in 86400 seconds..