------------[ cut here ]------------ WARNING: CPU: 0 PID: 9118 at net/can/isotp.c:852 isotp_tx_timer_handler+0xb7d/0xf40 Modules linked in: CPU: 0 PID: 9118 Comm: syz-executor.3 Not tainted 5.17.0-rc5-syzkaller-00021-g23d04328444a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:isotp_tx_timer_handler+0xb7d/0xf40 net/can/isotp.c:852 Code: 00 00 00 49 81 c4 08 46 00 00 31 db 4c 89 e7 be 01 00 00 00 ba 01 00 00 00 31 c9 e8 dd bc 32 f8 e9 51 02 00 00 e8 33 c3 54 f8 <0f> 0b 31 db e9 43 02 00 00 e8 25 c3 54 f8 31 db 49 bf 00 00 00 00 RSP: 0018:ffffc90000007b00 EFLAGS: 00010246 RAX: ffffffff8930ff8d RBX: 0000000000000000 RCX: ffff888022560000 RDX: 0000000080000100 RSI: ffffffff8dce7200 RDI: 0000000000000000 RBP: ffffc90000007c50 R08: 0000000000000005 R09: ffffffff8930f4ed R10: 0000000000000003 R11: ffff888022560000 R12: ffff888014dd0000 R13: ffff888022560a48 R14: 0000000000000000 R15: dffffc0000000000 FS: 0000555555dbb400(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000209e1000 CR3: 0000000019ee5000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x50b/0xa60 kernel/time/hrtimer.c:1749 hrtimer_run_softirq+0x1b7/0x5d0 kernel/time/hrtimer.c:1766 __do_softirq+0x392/0x7a3 kernel/softirq.c:558 __irq_exit_rcu+0xec/0x170 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1097 asm_sysvec_apic_timer_interrupt+0x12/0x20 RIP: 0010:lock_acquire+0x21f/0x4d0 kernel/locking/lockdep.c:5643 Code: 08 4c 89 f7 e8 d2 9f 6b 00 f6 84 24 81 00 00 00 02 0f 85 13 02 00 00 41 f7 c4 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 04 2f 00 00 00 00 43 c7 44 2f 09 00 00 00 00 43 c7 44 2f 11 RSP: 0018:ffffc90002b7eb60 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff9200056fd7c RCX: ffff888022560a58 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90002b7eca8 R08: dffffc0000000000 R09: fffffbfff1ffb7c5 R10: fffffbfff1ffb7c5 R11: 0000000000000000 R12: 0000000000000246 R13: 1ffff9200056fd74 R14: ffffc90002b7ebe0 R15: dffffc0000000000 rcu_lock_acquire+0x2a/0x30 include/linux/rcupdate.h:268 rcu_read_lock include/linux/rcupdate.h:694 [inline] is_bpf_text_address+0x27/0x270 kernel/bpf/core.c:715 kernel_text_address+0x9e/0xd0 kernel/extable.c:124 __kernel_text_address+0x9/0x40 kernel/extable.c:78 unwind_get_return_address+0x48/0x80 arch/x86/kernel/unwind_orc.c:318 arch_stack_walk+0xf8/0x140 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x11b/0x1e0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:45 [inline] set_alloc_info mm/kasan/common.c:436 [inline] ____kasan_kmalloc+0xdc/0x110 mm/kasan/common.c:515 kasan_kmalloc include/linux/kasan.h:270 [inline] __kmalloc+0x253/0x380 mm/slub.c:4424 kmalloc_array include/linux/slab.h:621 [inline] kcalloc+0x32/0x50 include/linux/slab.h:652 ext4_find_extent+0x2ee/0xcc0 fs/ext4/extents.c:905 ext4_ext_map_blocks+0x218/0x6ef0 fs/ext4/extents.c:4098 ext4_map_blocks+0xab9/0x1e30 fs/ext4/inode.c:638 mpage_map_one_extent fs/ext4/inode.c:2373 [inline] mpage_map_and_submit_extent fs/ext4/inode.c:2426 [inline] ext4_writepages+0x1737/0x40a0 fs/ext4/inode.c:2778 do_writepages+0x3c3/0x690 mm/page-writeback.c:2364 filemap_fdatawrite_wbc+0x11e/0x170 mm/filemap.c:384 __filemap_fdatawrite_range mm/filemap.c:417 [inline] __filemap_fdatawrite mm/filemap.c:423 [inline] filemap_flush+0x148/0x1c0 mm/filemap.c:450 ext4_release_file+0x7e/0x300 fs/ext4/file.c:141 __fput+0x3fc/0x870 fs/file_table.c:317 task_work_run+0x146/0x1c0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x209/0x220 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x2e/0x70 kernel/entry/common.c:300 do_syscall_64+0x53/0xd0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f44f1c75c9b Code: 0f 05 48 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44 RSP: 002b:00007fffa040fb20 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007f44f1c75c9b RDX: 0000001b30220000 RSI: 00007f44f1c3a000 RDI: 0000000000000003 RBP: 00007f44f1dd7960 R08: 0000000000000000 R09: 00000000275dcc57 R10: 00007fffa05f70b8 R11: 0000000000000293 R12: 000000000007ef03 R13: 00007fffa040fc20 R14: 00007f44f1dd6030 R15: 0000000000000032 ---------------- Code disassembly (best guess): 0: 08 4c 89 f7 or %cl,-0x9(%rcx,%rcx,4) 4: e8 d2 9f 6b 00 callq 0x6b9fdb 9: f6 84 24 81 00 00 00 testb $0x2,0x81(%rsp) 10: 02 11: 0f 85 13 02 00 00 jne 0x22a 17: 41 f7 c4 00 02 00 00 test $0x200,%r12d 1e: 74 01 je 0x21 20: fb sti 21: 48 c7 44 24 40 0e 36 movq $0x45e0360e,0x40(%rsp) 28: e0 45 * 2a: 4b c7 04 2f 00 00 00 movq $0x0,(%r15,%r13,1) <-- trapping instruction 31: 00 32: 43 c7 44 2f 09 00 00 movl $0x0,0x9(%r15,%r13,1) 39: 00 00 3b: 43 rex.XB 3c: c7 .byte 0xc7 3d: 44 2f rex.R (bad) 3f: 11 .byte 0x11