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UBSAN: shift-out-of-bounds in net/core/gen_estimator.c:83:38
shift exponent -55 is negative
CPU: 1 PID: 4893 Comm: systemd-udevd Not tainted 5.10.0-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:79 [inline]
 dump_stack+0x107/0x163 lib/dump_stack.c:120
 ubsan_epilogue+0xb/0x5a lib/ubsan.c:148
 __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 lib/ubsan.c:395
 est_timer.cold+0xbb/0x12d net/core/gen_estimator.c:83
 call_timer_fn+0x1a5/0x710 kernel/time/timer.c:1417
 expire_timers kernel/time/timer.c:1462 [inline]
 __run_timers+0x6f6/0xb10 kernel/time/timer.c:1731
 run_timer_softirq+0x7d/0x140 kernel/time/timer.c:1744
 __do_softirq+0x2cb/0xad5 kernel/softirq.c:298
 asm_call_irq_on_stack+0xf/0x20
 </IRQ>
 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline]
 run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline]
 do_softirq_own_stack+0xaa/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+0x18a/0x1b0 kernel/softirq.c:435
 sysvec_apic_timer_interrupt+0x4d/0x100 arch/x86/kernel/apic/apic.c:1096
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:628
RIP: 0010:write_comp_data+0x78/0x80 kernel/kcov.c:242
Code: 00 00 4e 8d 0c dd 28 00 00 00 4c 39 ce 72 1b 49 83 c0 01 4a 89 7c 08 e0 4e 89 54 08 e8 4a 89 54 08 f0 4a 89 4c d8 20 4c 89 00 <c3> 0f 1f 80 00 00 00 00 48 8b 0c 24 40 0f b6 d6 40 0f b6 f7 31 ff
RSP: 0018:ffffc90000e9fa08 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff88802189d100 RCX: ffffffff83934cc1
RDX: 0000000000000000 RSI: ffff888019869bc0 RDI: 0000000000000000
RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: ffffc90000e9fb50
R13: ffff888013dde810 R14: 0000000000000000 R15: 0000000000000000
 tomoyo_check_acl+0x121/0x450 security/tomoyo/domain.c:173
 tomoyo_path_permission security/tomoyo/file.c:586 [inline]
 tomoyo_path_permission+0x232/0x440 security/tomoyo/file.c:573
 tomoyo_path_perm+0x30f/0x430 security/tomoyo/file.c:838
 security_inode_getattr+0xcf/0x140 security/security.c:1280
 vfs_getattr fs/stat.c:121 [inline]
 vfs_statx+0x164/0x390 fs/stat.c:189
 vfs_fstatat fs/stat.c:207 [inline]
 vfs_lstat include/linux/fs.h:3125 [inline]
 __do_sys_newlstat+0x91/0x110 fs/stat.c:362
 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f8dcc5c1335
Code: 69 db 2b 00 64 c7 00 16 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 83 ff 01 48 89 f0 77 30 48 89 c7 48 89 d6 b8 06 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 03 f3 c3 90 48 8b 15 31 db 2b 00 f7 d8 64 89
RSP: 002b:00007fffc0132f68 EFLAGS: 00000246 ORIG_RAX: 0000000000000006
RAX: ffffffffffffffda RBX: 000055dbb1af9f40 RCX: 00007f8dcc5c1335
RDX: 00007fffc0132fa0 RSI: 00007fffc0132fa0 RDI: 000055dbb1af8f40
RBP: 00007fffc0133060 R08: 00007f8dcc880208 R09: 0000000000001010
R10: 00007f8dcc87fb58 R11: 0000000000000246 R12: 000055dbb1af8f40
R13: 000055dbb1af8f5a R14: 000055dbb1ae46e5 R15: 000055dbb1ae46ea
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