BUG: unable to handle page fault for address: fffffbfff3e139a3 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 23ffe4067 P4D 23ffe4067 PUD 23ffe3067 PMD 0 Oops: Oops: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 UID: 0 PID: 17 Comm: rcu_preempt Not tainted 6.11.0-rc4-syzkaller-00255-gd2bafcf224f3 #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:ffffc90000167540 EFLAGS: 00010086 RAX: 000000000172d001 RBX: 1ffffffff3e139a3 RCX: ffffffff816fe0cb RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff9f09cd18 RBP: ffffffffffffffff R08: ffffffff9f09cd1f R09: 1ffffffff3e139a3 R10: dffffc0000000000 R11: fffffbfff3e139a3 R12: ffff8880182d8000 R13: ffff8880182d8ad8 R14: dffffc0000000001 R15: fffffbfff3e139a4 FS: 0000000000000000(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffbfff3e139a3 CR3: 0000000067c48000 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/0x2040 kernel/locking/lockdep.c:5112 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5759 _raw_spin_lock_nested+0x31/0x40 kernel/locking/spinlock.c:378 raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:568 raw_spin_rq_lock kernel/sched/sched.h:1415 [inline] rq_lock kernel/sched/sched.h:1714 [inline] __schedule+0x357/0x4a60 kernel/sched/core.c:6436 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:timer_delete_sync kernel/time/timer.c:1720 [inline] RIP: 0010:del_timer_sync include/linux/timer.h:185 [inline] RIP: 0010:schedule_timeout+0x1c1/0x310 kernel/time/timer.c:2582 Code: c9 45 31 c0 45 31 c9 6a 00 e8 1b e4 ae f5 48 83 c4 08 4c 89 f7 4c 89 fe ba 04 00 00 00 e8 97 50 bf f5 e8 32 84 fe ff 4c 89 f7 <31> f6 e8 98 71 bf f5 4c 89 f7 48 c7 c6 a0 c1 0c 8c e8 49 fb f7 f8 RSP: 0018:ffffc90000167ba0 EFLAGS: 00000246 RAX: 0000000000208040 RBX: 0000000000000000 RCX: 0000000000000001 RDX: dffffc0000000000 RSI: ffffffff8c0ad560 RDI: ffffc90000167bc0 RBP: ffffc90000167c90 R08: ffffffff9017f46f R09: 1ffffffff202fe8d R10: dffffc0000000000 R11: fffffbfff202fe8e R12: dffffc0000000000 R13: 1ffff9200002cf74 R14: ffffc90000167bc0 R15: 000000010002bf8b rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2034 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2236 kthread+0x2f2/0x390 kernel/kthread.c:389 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Modules linked in: CR2: fffffbfff3e139a3 ---[ 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:ffffc90000167540 EFLAGS: 00010086 RAX: 000000000172d001 RBX: 1ffffffff3e139a3 RCX: ffffffff816fe0cb RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff9f09cd18 RBP: ffffffffffffffff R08: ffffffff9f09cd1f R09: 1ffffffff3e139a3 R10: dffffc0000000000 R11: fffffbfff3e139a3 R12: ffff8880182d8000 R13: ffff8880182d8ad8 R14: dffffc0000000001 R15: fffffbfff3e139a4 FS: 0000000000000000(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffbfff3e139a3 CR3: 0000000067c48000 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)