BUG: KASAN: stack-out-of-bounds in i801_isr_byte_done drivers/i2c/busses/i2c-i801.c:593 [inline] BUG: KASAN: stack-out-of-bounds in i801_isr drivers/i2c/busses/i2c-i801.c:664 [inline] BUG: KASAN: stack-out-of-bounds in i801_isr+0xb2d/0xbf0 drivers/i2c/busses/i2c-i801.c:645 Write of size 1 at addr ffffc90001a77dcc by task syz-executor.3/11619 CPU: 3 PID: 11619 Comm: syz-executor.3 Not tainted 5.9.0-rc4-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x198/0x1fd lib/dump_stack.c:118 print_address_description.constprop.0.cold+0x5/0x497 mm/kasan/report.c:383 __kasan_report mm/kasan/report.c:513 [inline] kasan_report.cold+0x1f/0x37 mm/kasan/report.c:530 i801_isr_byte_done drivers/i2c/busses/i2c-i801.c:593 [inline] i801_isr drivers/i2c/busses/i2c-i801.c:664 [inline] i801_isr+0xb2d/0xbf0 drivers/i2c/busses/i2c-i801.c:645 __handle_irq_event_percpu+0x223/0xaa0 kernel/irq/handle.c:156 handle_irq_event_percpu kernel/irq/handle.c:196 [inline] handle_irq_event+0x102/0x285 kernel/irq/handle.c:213 handle_fasteoi_irq+0x22f/0x9f0 kernel/irq/chip.c:714 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:50 [inline] handle_irq arch/x86/kernel/irq.c:230 [inline] __common_interrupt arch/x86/kernel/irq.c:249 [inline] common_interrupt+0x96/0x1f0 arch/x86/kernel/irq.c:239 asm_common_interrupt+0x1e/0x40 arch/x86/include/asm/idtentry.h:572 RIP: 0010:__do_softirq+0x1ba/0xa91 kernel/softirq.c:284 Code: c7 c0 58 3c b6 89 48 c1 e8 03 42 80 3c 30 00 0f 85 ea 07 00 00 48 83 3d ab 3a 96 01 00 0f 84 b7 06 00 00 fb 66 0f 1f 44 00 00 <48> c7 44 24 08 c0 90 a0 89 b8 ff ff ff ff 0f bc 04 24 83 c0 01 89 RSP: 0018:ffffc90000598f70 EFLAGS: 00000282 RAX: 1ffffffff136c78b RBX: ffff888021f056c0 RCX: 1ffffffff15645f9 RDX: 0000000000000000 RSI: 0000000000000101 RDI: 0000000000000000 RBP: ffffc90001737ba0 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:706 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] do_softirq_own_stack+0x9d/0xd0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:393 [inline] __irq_exit_rcu kernel/softirq.c:423 [inline] irq_exit_rcu+0x235/0x280 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x51/0xf0 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:581 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:770 [inline] RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x4d/0x90 kernel/locking/spinlock.c:191 Code: 48 c7 c0 48 3c b6 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 3c 48 83 3d 62 07 bf 01 00 74 29 48 89 df 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 44 80 58 f9 65 8b 05 7d c9 0a 78 RSP: 0018:ffffc90001737ca8 EFLAGS: 00000282 RAX: 1ffffffff136c789 RBX: 0000000000000282 RCX: 1ffffffff15645f9 RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000282 RBP: ffff88802d127740 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: ffffc90001737e28 R15: ffff888021f056c0 hrtimer_start_expires include/linux/hrtimer.h:436 [inline] hrtimer_sleeper_start_expires kernel/time/hrtimer.c:1804 [inline] do_nanosleep+0x1bc/0x650 kernel/time/hrtimer.c:1880 hrtimer_nanosleep+0x1f9/0x430 kernel/time/hrtimer.c:1936 __do_sys_nanosleep kernel/time/hrtimer.c:1970 [inline] __se_sys_nanosleep kernel/time/hrtimer.c:1957 [inline] __x64_sys_nanosleep+0x1dc/0x260 kernel/time/hrtimer.c:1957 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45ba31 Code: 75 14 b8 23 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 c4 c9 fb ff c3 48 83 ec 08 e8 8a 2d 00 00 48 89 04 24 b8 23 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 d3 2d 00 00 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007ffe114d8000 EFLAGS: 00000293 ORIG_RAX: 0000000000000023 RAX: ffffffffffffffda RBX: 000000000012eada RCX: 000000000045ba31 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007ffe114d8010 RBP: 00007ffe114d807c R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000001388 R13: 0000000000000001 R14: 000000000012ea65 R15: 00000000ffffffff Memory state around the buggy address: ffffc90001a77c80: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ffffc90001a77d00: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 >ffffc90001a77d80: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ^ ffffc90001a77e00: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ffffc90001a77e80: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 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