vcan0: j1939_tp_rxtimer: 0x000000004bfcebb8: rx timeout, send abort
vcan0: j1939_tp_rxtimer: 0x000000004bfcebb8: abort rx timeout. Force session deactivation
==================================================================
BUG: KASAN: use-after-free in __run_hrtimer kernel/time/hrtimer.c:1521 [inline]
BUG: KASAN: use-after-free in __hrtimer_run_queues+0xe18/0xf10 kernel/time/hrtimer.c:1583
Read of size 1 at addr ffff88809fba1573 by task systemd-udevd/23192

CPU: 1 PID: 23192 Comm: systemd-udevd Not tainted 5.6.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x188/0x20d lib/dump_stack.c:118
 print_address_description.constprop.0.cold+0xd3/0x315 mm/kasan/report.c:374
 __kasan_report.cold+0x35/0x4d mm/kasan/report.c:503
 kasan_report+0x33/0x50 mm/kasan/common.c:648
 __run_hrtimer kernel/time/hrtimer.c:1521 [inline]
 __hrtimer_run_queues+0xe18/0xf10 kernel/time/hrtimer.c:1583
 hrtimer_run_softirq+0x16d/0x250 kernel/time/hrtimer.c:1600
 __do_softirq+0x26c/0x9f7 kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x192/0x1d0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:546 [inline]
 smp_apic_timer_interrupt+0x19e/0x600 arch/x86/kernel/apic/apic.c:1140
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 </IRQ>
RIP: 0010:tomoyo_check_path_acl+0x86/0x130 security/tomoyo/file.c:258
Code: c1 ea 03 0f b6 04 02 84 c0 74 06 0f 8e 82 00 00 00 0f b6 4d 28 31 ff 45 31 ed d3 fb 83 e3 01 89 de e8 2e d3 17 fe 85 db 75 13 <e8> b5 d1 17 fe 44 89 e8 48 83 c4 08 5b 5d 41 5c 41 5d c3 e8 a2 d1
RSP: 0018:ffffc90017157a50 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff835b0ef2
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
RBP: ffffc90017157ba8 R08: ffff88809430c5c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a09a4e80
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 tomoyo_check_acl+0x138/0x3e0 security/tomoyo/domain.c:175
 tomoyo_path_permission security/tomoyo/file.c:586 [inline]
 tomoyo_path_permission+0x1f0/0x360 security/tomoyo/file.c:573
 tomoyo_path_perm+0x2f6/0x400 security/tomoyo/file.c:838
 security_inode_getattr+0xeb/0x150 security/security.c:1273
 vfs_getattr+0x22/0x60 fs/stat.c:117
 vfs_statx_fd+0x6a/0xb0 fs/stat.c:147
 vfs_fstat include/linux/fs.h:3295 [inline]
 __do_sys_newfstat+0x8b/0x100 fs/stat.c:388
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x7f075a7592e2
Code: 48 8b 05 b9 db 2b 00 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 83 ff 01 77 33 48 63 fe b8 05 00 00 00 48 89 d6 0f 05 <48> 3d 00 f0 ff ff 77 06 f3 c3 0f 1f 40 00 48 8b 15 81 db 2b 00 f7
RSP: 002b:00007fff9b1976e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000005
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f075a7592e2
RDX: 00007fff9b197700 RSI: 00007fff9b197700 RDI: 000000000000000f
RBP: 00007fff9b1978a0 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000080000 R11: 0000000000000246 R12: 000055b061f2ef40
R13: 000055b061f42ce0 R14: 000055b061f2fbf0 R15: 00007fff9b197860

Allocated by task 23426:
 save_stack+0x1b/0x80 mm/kasan/common.c:72
 set_track mm/kasan/common.c:80 [inline]
 __kasan_kmalloc mm/kasan/common.c:518 [inline]
 __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:491
 kmem_cache_alloc_trace+0x153/0x7d0 mm/slab.c:3551
 kmalloc include/linux/slab.h:555 [inline]
 kzalloc include/linux/slab.h:669 [inline]
 j1939_session_new+0x7c/0x3f0 net/can/j1939/transport.c:1418
 j1939_tp_send+0x22f/0x800 net/can/j1939/transport.c:1877
 j1939_sk_send_loop net/can/j1939/socket.c:1037 [inline]
 j1939_sk_sendmsg+0xabf/0x1360 net/can/j1939/socket.c:1160
 sock_sendmsg_nosec net/socket.c:652 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:672
 ____sys_sendmsg+0x6bf/0x7e0 net/socket.c:2362
 ___sys_sendmsg+0x100/0x170 net/socket.c:2416
 __sys_sendmsg+0xec/0x1b0 net/socket.c:2449
 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3

Freed by task 23192:
 save_stack+0x1b/0x80 mm/kasan/common.c:72
 set_track mm/kasan/common.c:80 [inline]
 kasan_set_free_info mm/kasan/common.c:340 [inline]
 __kasan_slab_free+0xf7/0x140 mm/kasan/common.c:479
 __cache_free mm/slab.c:3426 [inline]
 kfree+0x109/0x2b0 mm/slab.c:3757
 j1939_session_destroy net/can/j1939/transport.c:276 [inline]
 __j1939_session_release net/can/j1939/transport.c:284 [inline]
 kref_put include/linux/kref.h:65 [inline]
 j1939_session_put+0x25c/0x330 net/can/j1939/transport.c:289
 j1939_tp_rxtimer+0x2e9/0x2f4 net/can/j1939/transport.c:1194
 __run_hrtimer kernel/time/hrtimer.c:1519 [inline]
 __hrtimer_run_queues+0x3a2/0xf10 kernel/time/hrtimer.c:1583
 hrtimer_run_softirq+0x16d/0x250 kernel/time/hrtimer.c:1600
 __do_softirq+0x26c/0x9f7 kernel/softirq.c:292

The buggy address belongs to the object at ffff88809fba1400
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 371 bytes inside of
 512-byte region [ffff88809fba1400, ffff88809fba1600)
The buggy address belongs to the page:
page:ffffea00027ee840 refcount:1 mapcount:0 mapping:00000000c062914c index:0x0
flags: 0xfffe0000000200(slab)
raw: 00fffe0000000200 ffffea0002993d88 ffffea0001238b08 ffff8880aa000a80
raw: 0000000000000000 ffff88809fba1000 0000000100000004 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88809fba1400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88809fba1480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88809fba1500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                             ^
 ffff88809fba1580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88809fba1600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================