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BUG: KASAN: out-of-bounds in i801_isr_byte_done drivers/i2c/busses/i2c-i801.c:610 [inline]
BUG: KASAN: out-of-bounds in i801_isr drivers/i2c/busses/i2c-i801.c:670 [inline]
BUG: KASAN: out-of-bounds in i801_isr+0xc70/0xd60 drivers/i2c/busses/i2c-i801.c:651
Read of size 1 at addr ffffc9000f527d6e by task systemd-udevd/5037

CPU: 2 PID: 5037 Comm: systemd-udevd Not tainted 5.13.0-rc3-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x141/0x1d7 lib/dump_stack.c:120
 print_address_description.constprop.0.cold+0x5/0x2f8 mm/kasan/report.c:233
 __kasan_report mm/kasan/report.c:419 [inline]
 kasan_report.cold+0x7c/0xd8 mm/kasan/report.c:436
 i801_isr_byte_done drivers/i2c/busses/i2c-i801.c:610 [inline]
 i801_isr drivers/i2c/busses/i2c-i801.c:670 [inline]
 i801_isr+0xc70/0xd60 drivers/i2c/busses/i2c-i801.c:651
 __handle_irq_event_percpu+0x303/0x8f0 kernel/irq/handle.c:156
 handle_irq_event_percpu kernel/irq/handle.c:196 [inline]
 handle_irq_event+0x102/0x290 kernel/irq/handle.c:213
 handle_fasteoi_irq+0x22f/0x9f0 kernel/irq/chip.c:714
 generic_handle_irq_desc include/linux/irqdesc.h:158 [inline]
 handle_irq arch/x86/kernel/irq.c:231 [inline]
 __common_interrupt+0x9e/0x200 arch/x86/kernel/irq.c:250
 common_interrupt+0x9f/0xd0 arch/x86/kernel/irq.c:240
 </IRQ>
 asm_common_interrupt+0x1e/0x40 arch/x86/include/asm/idtentry.h:638
RIP: 0010:preempt_schedule_irq+0x49/0x90 kernel/sched/core.c:5535
Code: 55 53 65 48 8b 1c 25 00 f0 01 00 48 89 dd 48 c1 ed 03 48 01 c5 bf 01 00 00 00 e8 42 fc 36 f8 e8 1d e9 62 f8 fb bf 01 00 00 00 <e8> 92 ce ff ff 9c 58 fa f6 c4 02 75 27 bf 01 00 00 00 e8 90 ea 36
RSP: 0018:ffffc90009fbf4d8 EFLAGS: 00000202
RAX: 00000000002c7851 RBX: ffff88801d898000 RCX: 1ffffffff1b925d1
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffed1003b13000 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff817aec78 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 irqentry_exit+0x31/0x80 kernel/entry/common.c:426
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647
RIP: 0010:__sanitizer_cov_trace_const_cmp1+0x0/0x80 kernel/kcov.c:269
Code: 39 fe 72 1f 48 83 c2 01 4c 89 44 38 e8 48 c7 44 38 e0 06 00 00 00 48 89 4c 38 f0 4e 89 54 c8 20 48 89 10 c3 66 0f 1f 44 00 00 <53> 41 89 fb 41 89 f1 bf 03 00 00 00 65 48 8b 0c 25 00 f0 01 00 48
RSP: 0018:ffffc90009fbf5a0 EFLAGS: 00000206
RAX: 0000000000000000 RBX: 000000000000000a RCX: 0000000000000000
RDX: ffff88801d898000 RSI: 000000000000000a RDI: 0000000000000010
RBP: ffff888014886c00 R08: 0000000000000000 R09: 0000000000000009
R10: ffffffff83986cc7 R11: 0000000000000010 R12: 0000000000000002
R13: 00000000000002dc R14: dffffc0000000000 R15: 0000000000000000
 tomoyo_domain_quota_is_ok+0x32a/0x550 security/tomoyo/util.c:1092
 tomoyo_supervisor+0x2f2/0xf00 security/tomoyo/common.c:2089
 tomoyo_audit_path_log security/tomoyo/file.c:168 [inline]
 tomoyo_path_permission security/tomoyo/file.c:587 [inline]
 tomoyo_path_permission+0x270/0x3a0 security/tomoyo/file.c:573
 tomoyo_check_open_permission+0x33e/0x380 security/tomoyo/file.c:777
 tomoyo_file_open security/tomoyo/tomoyo.c:313 [inline]
 tomoyo_file_open+0xa3/0xd0 security/tomoyo/tomoyo.c:308
 security_file_open+0x52/0x4f0 security/security.c:1633
 do_dentry_open+0x358/0x11b0 fs/open.c:813
 do_open fs/namei.c:3361 [inline]
 path_openat+0x1c0e/0x27e0 fs/namei.c:3494
 do_filp_open+0x190/0x3d0 fs/namei.c:3521
 do_sys_openat2+0x16d/0x420 fs/open.c:1187
 do_sys_open fs/open.c:1203 [inline]
 __do_sys_open fs/open.c:1211 [inline]
 __se_sys_open fs/open.c:1207 [inline]
 __x64_sys_open+0x119/0x1c0 fs/open.c:1207
 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f4b2edaa9b1
Code: f7 d8 bf ff ff ff ff 64 89 02 eb cb 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 80 3f 00 74 1b be 00 08 09 00 b8 02 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 1f 89 c7 e9 00 ff ff ff 48 8b 05 b1 54 2e 00
RSP: 002b:00007ffee919d858 EFLAGS: 00000202 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 0000563bf6cb5fb0 RCX: 00007f4b2edaa9b1
RDX: 00000000000000fd RSI: 0000000000090800 RDI: 0000563bf6c9c410
RBP: 00007f4b2ff60710 R08: 0000563bf6c9c5e0 R09: 0000000000001010
R10: 00007f4b2f090b58 R11: 0000000000000202 R12: 0000000000000000
R13: 0000563bf6c9c410 R14: 00000000000000fd R15: 0000563bf6c9c410


Memory state around the buggy address:
 ffffc9000f527c00: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
 ffffc9000f527c80: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
>ffffc9000f527d00: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
                                                          ^
 ffffc9000f527d80: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
 ffffc9000f527e00: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8
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