BUG: unable to handle page fault for address: fffffbfff35395f2 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 23ffe4067 P4D 23ffe4067 PUD 23ffe3067 PMD 13fff0067 PTE 0 Oops: Oops: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 1 UID: 0 PID: 16715 Comm: syz.3.1752 Not tainted 6.11.0-syzkaller-07341-gbaeb9a7d8b60 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:87 [inline] RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline] RIP: 0010:kasan_check_range+0x82/0x290 mm/kasan/generic.c:189 Code: 01 00 00 00 00 fc ff df 4f 8d 3c 31 4c 89 fd 4c 29 dd 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 4c 89 cd 48 f7 d5 48 01 dd <41> 80 3b 00 0f 85 c9 01 00 00 49 ff c3 48 ff c5 75 ee e9 1e 01 00 RSP: 0018:ffffc90002d0f200 EFLAGS: 00010086 RAX: 0000000000cef701 RBX: 1ffffffff35395f2 RCX: ffffffff81703cdb RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff9a9caf90 RBP: ffffffffffffffff R08: ffffffff9a9caf97 R09: 1ffffffff35395f2 R10: dffffc0000000000 R11: fffffbfff35395f2 R12: ffff88807c649e00 R13: ffff88807c64a8d8 R14: dffffc0000000001 R15: fffffbfff35395f3 FS: 00007efd577706c0(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffbfff35395f2 CR3: 000000005d426000 CR4: 0000000000350ef0 Call Trace: instrument_atomic_read include/linux/instrumented.h:68 [inline] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] __lock_acquire+0xc8b/0x2050 kernel/locking/lockdep.c:5169 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5822 _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378 raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:585 raw_spin_rq_lock kernel/sched/sched.h:1423 [inline] __task_rq_lock+0xdf/0x3e0 kernel/sched/core.c:663 ttwu_runnable kernel/sched/core.c:3710 [inline] try_to_wake_up+0x182/0x1480 kernel/sched/core.c:4153 autoremove_wake_function+0x16/0x110 kernel/sched/wait.c:384 __wake_up_common kernel/sched/wait.c:89 [inline] __wake_up_common_lock+0x132/0x1e0 kernel/sched/wait.c:106 __unix_dgram_recvmsg+0x5f4/0x12f0 net/unix/af_unix.c:2462 sock_recvmsg_nosec+0x190/0x1d0 net/socket.c:1052 ____sys_recvmsg+0x3cd/0x480 net/socket.c:2820 ___sys_recvmsg net/socket.c:2864 [inline] do_recvmmsg+0x46e/0xad0 net/socket.c:2958 __sys_recvmmsg net/socket.c:3037 [inline] __do_sys_recvmmsg net/socket.c:3060 [inline] __se_sys_recvmmsg net/socket.c:3053 [inline] __x64_sys_recvmmsg+0x199/0x250 net/socket.c:3053 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7efd5697def9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007efd57770038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007efd56b36058 RCX: 00007efd5697def9 RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000005 RBP: 00007efd569f0b76 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007efd56b36058 R15: 00007ffcb62f9ed8 Modules linked in: CR2: fffffbfff35395f2 ---[ end trace 0000000000000000 ]--- RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:87 [inline] RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline] RIP: 0010:kasan_check_range+0x82/0x290 mm/kasan/generic.c:189 Code: 01 00 00 00 00 fc ff df 4f 8d 3c 31 4c 89 fd 4c 29 dd 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 4c 89 cd 48 f7 d5 48 01 dd <41> 80 3b 00 0f 85 c9 01 00 00 49 ff c3 48 ff c5 75 ee e9 1e 01 00 RSP: 0018:ffffc90002d0f200 EFLAGS: 00010086 RAX: 0000000000cef701 RBX: 1ffffffff35395f2 RCX: ffffffff81703cdb RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff9a9caf90 RBP: ffffffffffffffff R08: ffffffff9a9caf97 R09: 1ffffffff35395f2 R10: dffffc0000000000 R11: fffffbfff35395f2 R12: ffff88807c649e00 R13: ffff88807c64a8d8 R14: dffffc0000000001 R15: fffffbfff35395f3 FS: 00007efd577706c0(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffbfff35395f2 CR3: 000000005d426000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess), 7 bytes skipped: 0: df 4f 8d fisttps -0x73(%rdi) 3: 3c 31 cmp $0x31,%al 5: 4c 89 fd mov %r15,%rbp 8: 4c 29 dd sub %r11,%rbp b: 48 83 fd 10 cmp $0x10,%rbp f: 7f 29 jg 0x3a 11: 48 85 ed test %rbp,%rbp 14: 0f 84 3e 01 00 00 je 0x158 1a: 4c 89 cd mov %r9,%rbp 1d: 48 f7 d5 not %rbp 20: 48 01 dd add %rbx,%rbp * 23: 41 80 3b 00 cmpb $0x0,(%r11) <-- trapping instruction 27: 0f 85 c9 01 00 00 jne 0x1f6 2d: 49 ff c3 inc %r11 30: 48 ff c5 inc %rbp 33: 75 ee jne 0x23 35: e9 .byte 0xe9 36: 1e (bad) 37: 01 00 add %eax,(%rax)